Designation: A787/A787M − 15
Standard Specification for
Electric-Resistance-Welded Metallic-Coated Carbon Steel Mechanical Tubing1 This standard is issued under the fixed designation A787/A787M; the number immediately following the designation indicates the year of original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Sco Scope* pe*
by the Hot-Dip Process A792/A792M Sp Spec ecifi ifica cati tion on fo forr St Stee eell Sh Shee eet, t, 55 % Aluminum-Zin Alumin um-Zincc AlloyAlloy-Coated Coated by the Hot-D Hot-Dip ip Proce Process ss A924/A924M S A924/A924M Spec pecific ificatio ation n for Gen Genera erall Req Requir uireme ements nts for Steel Sheet, Metallic-Coated by the Hot-Dip Process B6 Specification B6 Specification for Zinc
1.1 This specification covers round, round, square, rectangular, rectangular, and special shape, electric electric-resis -resistancetance-welded welded mechan mechanical ical tubing tubing,, either zinc-coated (galvanized) after welding or produced from aluminum-coat aluminu m-coated, ed, zinc-c zinc-coated oated (galv (galvanized anized), ), zinc-i zinc-iron ron alloycoated (galv (galvanneale annealed), d), or 55 % alumin aluminum-zin um-zincc alloyalloy-coated coated steell she stee sheet. et. Tubing Tubing for use as elec electric trical al con condui duitt (EM (EMT) T) or interme inte rmedia diate te meta metallic llic con condui duitt (IM (IMC) C) is not cov covere ered d by thi thiss specification.
3. Class Classifica ification tion 3.1 The types of of tubing covere covered d by this specificatio specification n are:
1.2 This specification specification covers mechanical tubing with outside diameters or maximum outside dimensions ranging from 1 ⁄ 2 to 15 in. [12.7 to 380.0 mm] and wall thickness from 0.028 to 0.180 in. [0.70 to 4.60 mm]. 1.3 Siz Sizes es out outsid sidee the ranges listed above above may be ord ordered ered provided all other requirements of the specification are met. 1.4 This specification specification is expressed in both inch-pound inch-pound units and in SI units; however, unless the purchase order specifies the app applica licable ble M spe specific cificatio ation n des design ignatio ation n (SI uni units) ts),, the inch-po inch -pound und units sha shall ll app apply ly.. The valu values es stat stated ed in eith either er SI units uni ts or inc inch-p h-poun ound d uni units ts are to be reg regard arded ed sep separa arately tely as standard. Within the text, the SI units are shown in brackets. The values stated in each system may not be exact equivalents; equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in nonconformance with the standard.
Type Number
Code Letters
Description
1
AWAC
2
AWG
3
AWPG
4
AWGA
5
AWGZ
electric-resistance-welded aluminumcoated carbon steel mechan mechanical ical tubing electric-resistance-welded galvanized carbon steel mechanical tubing electric-resistance-welded carbon steel mechanical tubing, post-hot dipped galvanized electric-resistance-welded carbon steel mechanical tubing, zinc-iron alloycoated (galvannealed) electric-resistance-welded carbon steel mechanical tubing, 55 % aluminum-zinc alloy-coated
4. Orde Ordering ring Informatio Information n 4.1 The ordere ordered d wall thicknes thicknesss of the tubing tubing shall shall be the total of the base metal and the metallic coating. 4.2 Ord Orders ers for material material under under this specificat specification ion shall shall include the following: 4.2.1 Quant Quantity ity (feet, (feet, metres, or number number of of lengths), lengths), 4.2.2 Type, code letters, letters, and description description (Sections (Sections 1 1 and and 3 3), ), 4.2.3 Applic Applicable able ASTM ASTM designation designation number(s) number(s),, 4.2.4 Coatin Coating g designation designation and and type type of coating, coating, 4.2.5 4.2 .5 Che Chemica mically lly treated treated or not chemical chemically ly treated treated raw material, 4.2.6 4.2 .6 Oil Oiled ed or dry dry (Secti (Section on 16 16), ), smooth coating (if required), required), 4.2.7 Extra smooth 4.2.8 Custom Customer er application, application, includin including g fabrication, fabrication, 4.2.9 4.2 .9 Fla Flash sh condi conditio tion n (7.1 (7.1), ), 4.2.10 4.2.1 0 Steel grade grade designati designation on (Sections (Sections 5 and 9), 4.2.11 4.2.1 1 Report of chemical chemical analysis analysis if required required (Sections (Sections 10 10 and 11 11), ), 4.2.12 4.2.1 2 Shape (round, (round, square, square, rectangular rectangular,, or special), special),
2. Referenc Referenced ed Documents Documents 2.1 ASTM Standards: 2 A463/A463M Sp Speci ecifica ficatio tion n fo forr Ste Steel el Sh Sheet eet,, Alu Alumin minum um-Coated, by the Hot-Dip Process A653/A653M Spe Specific cificatio ation n for Ste Steel el She Sheet, et, Zin Zinc-C c-Coate oated d (Galvanized) (Galv anized) or Zinc-I Zinc-Iron ron Alloy Alloy-Coated -Coated (Galva (Galvanneale nnealed) d) 1
This specification is under the jurisdiction of ASTM Committee A01 A01 on on Steel, Stainless Steel and Related Alloys and is the direct responsibility of Subcommittee A01.09 on A01.09 on Carbon Steel Tubular Products. Curren Cur rentt edi editio tion n app approv roved ed May 1, 201 2015. 5. Pub Publis lished hed May 201 2015. 5. Ori Origin ginall ally y approved in 1981. Last previous edition approved in 2014 as A787/A787M – 14. DOI: 10.1520/A0787_A0787M-15. 2 For referenced ASTM standards, visit the ASTM website, www.astm.org, or contact ASTM Customer Service at
[email protected]. For Annual Book of ASTM Standards volume information, refer to the standard’s Document Summary page on the ASTM website.
*A Summary of Changes section appears at the end of this standard Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1
A787/A787M − 15 4.2.12.1 4.2.12 .1 Dim Dimens ension ions: s: rou round— nd—any any two of the fol follow lowing ing:: inside diameter, outside diameter, or wall thickness; square or rectangular—o rectang ular—outside utside dimension, wall thickn thickness, ess, and corner radii, if required. (See 12.1 (See 12.1 a and nd 13.1 13.1 and and 13.2 13.2..) 4.2.13 4.2.1 3 Lengt Length: h: round tubing—mi tubing—mill ll lengths or definite definite cut lengthss (see 12.2); length 12.2); squ square are and rec rectan tangul gular ar tub tubing ing—mil —milll cut lengths and specified length (see 13.4 13.4). ). 4.2.14 4.2 .14 Squ Square arenes nesss of cut: round round tubing, tubing, if required required (see 12.3); 12.3 ); square and rectangular tubing, if required (see 13.7 13.7)), 4.2.15 4.2.1 5 Burrs remov removed, ed, if requi required red (see (see 15.2 15.2), ), 4.2.16 4.2.1 6 Specia Speciall packaging packaging (Sectio (Section n 19 19)), 4.2.17 4.2.1 7 Custom Customer er specification specification number number,, if applicable, applicable, 4.2.18 4.2.1 8 Specia Speciall requir requirements, ements, 4.2.19 4.2.1 9 Specia Speciall marking marking (Sectio (Section n 18 18), ), and 4.2. 4. 2.20 20 Rec Recoa oatin ting g of ou outsi tside de di diam amet eter er we weld ld an and d he heatataffected area, on precoated steel, if required.
and Table 2, and Table 2, may be used as the precoated material for the steel tubing tub ing upo upon n agr agreeme eement nt bet betwee ween n the man manufa ufactu cturer rer and the purcha pur chaser ser.. Suc Such h stee steell she sheet et sha shall ll mee meett the req requir uireme ements nts of Specification A463/A463M Specification A463/A463M,, A653/A653M A653/A653M,, A792/A792M A792/A792M,, and A924/A924M,, except for the chemical requirements. A924/A924M 6. Manu Manufactu facture re 6.1 Tub Tubes es shall be made by the electric-r electric-resistan esistance ce welding process and shall be made from hot or cold-rolled precoated steel except for Type 3. 6.1.1 The weld shall not be located within the radius radius of the corners of any shaped tube unless specified by the purchaser. 6.2 Spe Special cial manufact manufacturi uring ng practices practices allow for pos post-h t-hot ot dipped galvanizing of welded tubing. If this product is desired all sections of this specification will apply except Table except Table 3. 3. Wall thickness tolerances shall be determined by agreement between the producer and purchaser.
5. Pro Process cess
7. Flas Flash h Conditions Conditions
5.1 The steel steel shall shall be made from from any process process.. 5.1. 5. 1.1 1 If a sp spec ecifi ificc ty type pe of me melt ltin ing g is re requ quir ired ed by th thee purchaser, it shall be stated on the purchase order. 5.1.2 The primary melting may incorporate incorporate separate separate degassing or refining and may be followed by secondary melting, using electroslag electroslag remelti remelting ng or vacuu vacuum m remeltin remelting. g. If secondary melting is employed, the heat shall be defined as all of the ingots remelted from a single primary heat. 5.1. 5. 1.3 3 Ste Steel el may be ca cast st in in ingo gots ts or may be st stra rand nd cast. cast. When Whe n stee steell of dif differ ferent ent gra grades des is seq sequen uential tially ly str strand and cast cast,, identification identifi cation of the result resultant ant transi transition tion material is requir required. ed. Thee pr Th prod oduc ucer er sh shall all re remo move ve th thee tra trans nsiti ition on ma mater terial ial by an established procedure that positively separates the grades.
7.1 Th 7.1 Thee fla flash sh co cond ndit itio ions ns un unde derr wh whic ich h tu tubi bing ng ma may y be furnished are as follows: The flash shall be removed from the outs ou tsid idee di diame amete terr of tu tubi bing ng co cove vere red d by th this is sp speci ecific ficati ation on.. Tubing furnished to this specification may have the following conditions of welding flash on the inside diameter. 7.1.1 Flash-In— All A ll tu tubi bing ng in wh which ich th thee in insid sidee di diam amete eterr weldin wel ding g flas flash h doe doess not exceed the wall thickness thickness or 3 ⁄ 32 32 in. [2.38 mm], whichever is less. Controlled to 0.010 in. [0.25 mm], Maximum— Maximum— 7.1.2 Flash Controlled Tubing in which the height of the remaining welding flash is cont co ntro rolle lled d so as no nott to ex excee ceed d 0. 0.01 010 0 in in.. [0 [0.2 .25 5 mm mm]. ]. Th This is conditi con dition on is ava availab ilable le in ove overr 0.7 0.750 50 in. [19 [19.0 .0 mm] outside outside diameter and gauges consistent with Tables with Tables 5 and 6. 6. Controlled to 0.005 in. [0.13 mm], Maximum— Maximum— 7.1.3 Flash Controlled When the inside diameter flash is controlled to 0.005 in. [0.13 mm] max maximu imum m in tub tubing ing pro produc duced ed to out outsid sidee dia diamete meterr and wall thickness, inside diameter and wall thickness, or outside diameter and inside diameter tolerances, the remaining inside diameter flash, if any, is part of the applicable inside diameter tolerance. This controlled flash is available in 0.750 in. [19.0 mm] outside diameter or greater.
5.2 For tub tubing ing pro produc duced ed fro from m pre precoa coated ted ste steel el she sheet, et, the composition of the coating shall comply with the applicable specification. 5.2.1 Specification A463/A463M — Coating Coating designation for aluminum coated-sheet. 5.2.2 Specification A653/A653M — Coating Coating designation for galvanized and galvannealed steel sheet. 5.2.3 Specification A792/A792M — Coating Coating designation for 55 % aluminum-zinc alloy-coated steel sheet. 5.2.4 Other grades grades of coated steel sheet, as listed in Table in Table 1
TABLE 1 Chemical Requirements for Low-Carbon Steels A
7.2 Tu Tubes bes shall shall be fur furnis nished hed in the followin following g shapes, shapes, as specifi spe cified ed by the pur purcha chaser ser:: rou round, nd, squ square are,, rec rectan tangul gular ar,, or special shapes (as negotiated).
,B
Composition, % Grade DesignationC
MT1010 MT1015 MTX1015 MT1020 MTX1020
Carbon
0. 05 0. 10 0 .1 0 0. 15 0 .1 5
to to to to to
0 .1 5 0 .2 0 0. 20 0 .2 5 0. 25
M a n ga n es e
0 .3 0 0 .3 0 0 .6 0 0 .3 0 0 .7 0
to to to to to
0 .6 0 0 .6 0 0 .9 0 0 .6 0 1 .0 0
Phosphorus, max 0 .0 3 5 0 .0 3 5 0 .0 3 5 0 .0 3 5 0 .0 3 5
TABLE 2 Chemical Requirements for Other Carbon Steels A Sulfur, max
Grade Designation
0. 03 5 0. 03 5 0 .0 3 5 0. 03 5 0 .0 3 5
1 00 8 1 01 0 1 01 5 1 01 6 1 01 7 1 01 8 1 01 9 1 02 1
A
Rimmed or capped steels that may be used for the above grades are characterized by a lack of uniformity in their chemical composition, and for this reason product analysis is not technologically appropriate unless misapplication is clearly indicated. B Chemistry Chemis try represents heat analys analysis. is. Product analys analysis, is, except for rimmed or capped steel, is to be in accordance with usual practice as shown in Table in Table 7. 7. C The letters MT indicate mechanical tubing.
A
Composition, % Carbon
M a n ga n es e
Phosphorus, max
Sulfur, max
0 .1 0 m a x 0 .0 8 to 0 .1 3 0 .1 2 to 0 .1 8 0 .1 2 to 0 .1 9 0 .1 4 to 0 .2 1 0 .1 4 to 0 .2 1 0 .1 4 to 0 .2 1 0 .1 7 to 0 .2 4
0. 50 0 .3 0 to 0 .6 0 0 .3 0 to 0 .6 0 0 .6 0 to 0 .9 0 0 .3 0 to 0 .6 0 0 .6 0 to 0 .9 0 0 .7 0 to 1 .0 0 0 .6 0 to 0 .9 0
0 .0 3 5 0 .0 3 5 0 .0 3 5 0 .0 3 5 0 .0 3 5 0 .0 3 5 0 .0 3 5 0 .0 3 5
0. 03 5 0 .0 3 5 0 .0 3 5 0 .0 3 5 0 .0 3 5 0 .0 3 5 0 .0 3 5 0 .0 3 5
Chemistry Chemis try represents heat analys analysis. is. Product analys analysis, is, except for rimmed or capped steel, is to be in accordance with usual practice as shown in Table in Table 7. 7.
2
A787/A787M − 15 o l t 2 c n 1 i , r 5 e v 1 O
o l t 0 c n 1 i , r 2 e v 1 O
) s t i n u d n u o p h c n i (
A
o l t c 8 i n r , e v 0 O 1
o l t 6 c n r i , e v 8 O
s u n i M s u l P s u n i M s u l P s u n i M s u l P s u n i M
g n i b u s T u l d P e s d u l n i e s W o M - t d u n s ⁄ l n i c a M A . 4 i n s n d i r , l u e r , e t v 6 P a t , . e O o n s i u C e , l P e c m a c i l n l i a a D r t e s e t o l l e d o u n c i T m s ⁄ n i i s M e 3 r t , s P u r ⁄ e n r O e v 4 k o c s f O i h l u T e l c l P a n a W r e o s l u o t l n i T ⁄ c n M i s s 1 ⁄ , e r n e v 3 k O s c i u l h P T l l a s W u o l n c i 3 t n i M , E 1 L r e ⁄ B v A O 1 T s 2
1
4
3
2
1
6 1
5 1
4
3
6 1
5 1
u l P
l c n i , 1 o t ⁄
s u n i M
2
1
s s e n k c i h T l l a W
s u l P
. n i B
G W B
0 1 4 4 6 6 4 4 1 1 1 1 1 1 1 1 1 0 0 . 0 . 0 . 0 . 0 . 0 . 0 . 0 . . 0 0 0 0 0 0 0 0 0 2 3 4 4 4 4 6 6 6 0 0 0 0 0 0 0 0 0 0 . 0 . 0 . 0 . 0 . 0 . 0 . 0 . 0 . 0 0 0 0 0 0 0 0 0 0 1 4 4 6 6 4 4 4 1 1 1 1 1 1 1 1 1 0 0 . 0 . . 0 . 0 . 0 . 0 . 0 . 0 . 0 0 0 0 0 0 0 0 0 2 3 4 4 4 4 6 6 6 0 0 0 0 0 0 0 0 0 0 . 0 . 0 . 0 . 0 . 0 . 0 . 0 . 0 . 0 0 0 0 0 0 0 0 0 0 1 4 4 6 6 4 4 4 1 1 1 1 1 1 1 1 1 0 . 0 . 0 . 0 . 0 . 0 . 0 . 0 . 0 . 0 0 0 0 0 0 0 0 0 2 3 4 4 4 4 6 6 6 0 0 0 0 0 0 0 0 0 0 . 0 . 0 . 0 . 0 . 0 . 0 . 0 . 0 . 0 0 0 0 0 0 0 0 0 0 0 2 2 3 3 3 3 3 ) . 1 1 1 1 1 1 1 1 1 2 0 . 0 . 0 . 0 . 0 . 0 . 0 . 0 . 0 . . 0 0 0 0 0 0 0 0 0 6 ( r e s a 2 4 6 6 7 7 7 7 7 h 0 0 0 0 0 0 0 0 0 c 0 . 0 . 0 . 0 . 0 . 0 . 0 . 0 . 0 . r 0 0 0 0 0 0 0 0 0 u p d n a r e 0 0 2 2 3 3 3 3 3 c u 1 1 1 1 1 1 1 1 1 0 . 0 . 0 . 0 . 0 . 0 . 0 . 0 . 0 . d r 0 0 0 0 0 0 0 0 0 o p e h t 2 4 6 6 7 7 7 7 7 0 0 0 0 0 0 0 0 0 n 0 . 0 . 0 . 0 . 0 . 0 . 0 . 0 . 0 . e e 0 0 0 0 0 0 0 0 0 t w e b t 9 9 1 1 2 2 2 2 2 n 0 0 1 1 1 1 1 1 1 e 0 . 0 . 0 . 0 . 0 . 0 . 0 . 0 . 0 . 0 0 0 0 0 0 0 0 0 m e e r g a 3 5 7 7 8 8 8 8 8 y 0 0 0 0 0 0 0 0 0 b 0 . 0 . 0 . 0 . 0 . 0 . 0 . 0 . 0 . 0 0 0 0 0 0 0 0 0 d e n i m r e 6 8 9 9 1 1 2 2 2 2 2 t 0 0 0 0 1 1 1 1 1 1 1 e 0 . 0 . 0 . 0 . 0 . 0 . 0 . 0 . 0 . 0 . 0 . d 0 0 0 0 0 0 0 0 0 0 0 e b l l a 2 3 3 5 7 7 8 8 8 8 8 h 0 0 0 0 0 0 0 0 0 0 0 s 0 . 0 . 0 . 0 . 0 . 0 . 0 . 0 . 0 . 0 . 0 . s 0 0 0 0 0 0 0 0 0 0 0 e c n a r e l 6 6 8 8 8 0 0 2 2 2 1 1 t 0 0 0 0 0 1 1 1 1 1 1 1 o 0 . 0 . 0 . 0 . 0 . 0 . 0 . 0 . 0 . 0 . 0 . 0 . s s 0 0 0 0 0 0 0 0 0 0 0 0 e n k c i t 2 2 3 4 6 8 8 9 9 9 9 9 h 0 0 0 0 0 0 0 0 0 0 0 0 l 0 . 0 . 0 . 0 . 0 . 0 . 0 . 0 . 0 . 0 . 0 . 0 . a 0 0 0 0 0 0 0 0 0 0 0 0 w g n i b u t 6 6 7 7 8 0 0 1 1 0 0 0 0 0 1 1 1 1 d 0 . 0 . 0 . 0 . 0 . 0 . 0 . 0 . 0 . e 0 0 0 0 0 0 0 0 0 d l e w d 2 3 4 5 6 8 8 9 9 e . z e 0 0 0 0 0 0 0 0 0 i 0 n g . 0 . 0 . 0 . 0 . 0 . 0 . 0 . 0 . u a 0 0 0 0 0 0 0 0 0 v a l a G g e r i 8 5 9 5 3 5 9 0 4 8 5 0 d W 2 3 4 6 8 9 0 2 3 4 6 8 e p 0 . 0 . 0 . 0 . 0 . 0 . 1 . 1 . 1 . 1 . 1 . 1 . p m 0 0 0 0 0 0 0 0 0 0 0 0 i d a t h o g h n - i t s m r o i 2 2 0 2 8 1 6 1 4 1 3 1 2 1 1 1 0 1 9 8 7 P B A B
3
A787/A787M − 15
l c n i , 5 7 3 o t 0 5 2 r e v O l c n i , 0 5 2 o t 0 0 2 r e v O
s u n i M
8 5 0 0 0 0 2 . 3 . 4 . 4 . 4 . 4 . 0 0 0 0 0 0
s u l P
8 0 0 0 5 5 0 . 1 . 1 . 1 . 1 . 1 . 0 0 0 0 0 0
s u n i M
5 5 0 0 0 0 0 2 . 2 . 3 . 4 . 4 . 4 . 4 . 0 0 0 0 0 0 0
s ) u l s P t i n U I l c S ( n s i ,
u
n i g 0 0 M n 2 i b t o s u u n i T 0 5 M d 1 d e r n s e d l v a u e O s l u P l W P s , A l m c n m s d i , u e , e t 0 n i a m 5 c n o 1 a M C m o r e , t l c r o 0 i e l T 0 l t 1 s e a t m r s s e a e u v e n l i O k m c P e D i r e h P d T l l r i a s l o f t c W s u n i e O , u n c 0 i n 0 M a 1 r o e t l o 0 T 5 s r s s e u v l e O P n k c i h T l l l c s u n i a i n , M W 0 5 4 o E t L 5 B 2 A r s u T e v l
A
O P
s u n i l M c n i , 5 2 o s t u 3 l 1 P
s s e n k c i h T l l a m W m
5 0 0 0 0 5 5 0 . 1 . 1 . 1 . 1 . 1 . 1 . 0 0 0 0 0 0 0
5 5 0 3 3 3 3 2 . 2 . 3 . 3 . 3 . 3 . 3 . 0 0 0 0 0 0 0
) . 2 . 6 ( r e s a h 5 0 5 8 8 8 8 c r 0 . 1 . 1 . 1 . 1 . 1 . 1 . u 0 0 0 0 0 0 0 p d n a r e c u 5 5 0 3 3 3 3 d 2 . 2 . 3 . 3 . 3 . 3 . 3 . o 0 0 0 0 0 0 0 r p e h t n e e 5 0 5 8 8 8 8 t w 0 1 1 1 1 1 1 . . . . . . . e 0 0 0 0 0 0 0 b t n e m e e r 0 3 3 8 0 0 0 0 g 2 2 2 2 3 3 3 3 . . . . . . . . a 0 0 0 0 0 0 0 0 b y d e n i m r 8 8 3 8 0 0 0 0 t e 0 0 1 1 2 2 2 2 . . . . . . . . e 0 0 0 0 0 0 0 0 d e b l l a h s 0 5 0 5 8 8 0 0 s 2 1 2 2 2 2 3 3 . 0 . 0 . 0 . 0 . 0 . 0 . 0 . e c 0 n a r e l o t s 8 0 5 0 3 3 3 3 s e 0 1 1 2 2 2 2 2 . . . . . . . . n 0 0 0 0 0 0 0 0 k c i h t l l a w g 8 8 0 5 7 8 n i 0 1 2 2 2 2 b . . . . . . u 0 0 0 0 0 0 t d e d l e w 4 0 5 0 2 3 0 d . 1 . 1 . 2 . 2 . 2 . e 0 0 0 0 0 0 z i n a v l a g d e p p i d t o h t s o 0 . 5 . 0 . 5 . 0 . 5 . 0 . 5 . A P 1 1 2 2 3 3 4 4
4
A787/A787M − 15 TABLE 5 Diameter Tolerances for Metallic-Coated Round Tubing (inch-pound units) Wall Thickness Outside Diameter RangeF , in. BWGB
in.
Tubing with Any Inside Flash Condition
Flash-Controlled to 0.005 in. Tubing OnlyA
OutsideC ,D Diameter, Plus and Minus
Inside Diameter, Plus and Minus
Tolerances, in.E 1
⁄ 2 to 11 ⁄ 8, incl
2 2 to 1 6
0 .0 2 8 / 0 . 0 6 5
0 .0 0 3 5
0 .0 1 9
Over 11 ⁄ 8 to 2, incl Over 11 ⁄ 8 to 2, incl
2 2 to 1 4 1 3 to 1 0
0. 02 8/ 0. 08 3 0. 09 5/ 0. 13 4
0. 00 5 0. 00 5
0. 02 1 0. 02 7
Over 2 to 21 ⁄ 2, incl Over 2 to 21 ⁄ 2, incl
20 to 14 13 to 10
0.035/0.083 0.095/0.134
0.006 0.006
0.023 0.029
Over 21 ⁄ 2 to 3, incl Over 21 ⁄ 2 to 3, incl
20 to 14 13 to 10
0.035/0.083 0.095/0.134
0.008 0.008
0.025 0.031
Over 3 to 31 ⁄ 2, incl Over 3 to 31 ⁄ 2, incl
20 to 14 13 to 10
0.035/0.083 0.095/0.134
0.009 0.009
0.026 0.032
Over 31 ⁄ 2 to 4, incl Over 31 ⁄ 2 to 4, incl
20 to 14 13 to 10
0.035/0.083 0.095/0.134
0.010 0.010
0.027 0.033
Over 4 to 5, incl Over 4 to 5, incl
16 to 14 13 to 10
0.065/0.083 0.095/0.134
0.020 0.020
0.037 0.043
Over 5 to 6, incl Over 5 to 6, incl
16 to 14 13 to 10
0.065/0.083 0.095/0.134
0.020 0.020
0.037 0.043
Over 6 to 8, incl Over 6 to 8, incl
16 t o 10 9 to 7
0 .0 6 5 / 0 .1 3 4 0 . 1 4 8 /0 .1 8 0
0 .0 2 5 0. 02 5
0 .0 4 8 0 .0 5 9
Over 8 to 10, incl Over 8 to 10, incl
1 6 to 1 0 9 to 7
0 .0 6 5 /0 .1 3 4 0. 14 8/ 0. 18 0
0 .0 3 0 0. 03 0
0. 04 3 0 .0 5 9
Over 10 to 12, incl Over 10 to 12, incl
1 6 to 1 0 9 to 7
0 . 0 6 5 /0 .1 3 4 0 .1 4 8 / 0 .1 8 0
0 .0 3 5 0 .0 3 5
0 .0 4 1 0 .0 4 5
Over 12 to 15, incl Over 12 to 15, incl
1 2 to 1 0 9 to 7
0 . 1 0 9 /0 .1 3 4 0 .1 4 8 / 0 .1 8 0
0 .0 4 0 0 .0 4 0
0 .0 5 8 0 .0 6 0
A
Flash controlled controlled to 0.005 in. maximu maximum m tubing is produc produced ed to outsid outside e diamet diameter er tolerances and wall thickness tolerances, tolerances, inside diameter tolerances and wall thickn thickness ess tolerances, or outside diameter tolerances and inside diameter tolerances, in which the height of the remaining inside welding flash is controlled not to exceed 0.005 in. Any remaining flash is considered to be part of the applicable inside diameter tolerances. B Birmingham Wire Gauge. C Flash-in tubing is produced to outside diameter tolerances and wall thickness tolerances only, and the height of the inside welding flash does not exceed the wall 32 in., whichever is less. thickness or 3 ⁄ 32 D Flash controlled to 0.010 in. maximum tubing consists of tubing over 5 ⁄ 8 in. outside diameter which is commonly produced to outside diameter tolerances and wall thickness tolerances only, in which the height of the remaining inside welding flash is controlled not to exceed 0.010 in. E The ovality shall be within the above tolerances except when the wall thickness is less than 3 % of the outside diameter, in which cases see 12.5 12.5.. F Measured at least 2 in. from the cut end of the tubing.
7.3 Recoati Recoating ng of the outside outside diameter weld weld-heat-heat-af affected fected area on pr area preco ecoate ated d ste steel el tu tubi bing ng ma may y be pe perf rfor orme med d at th thee manufa man ufactu cture’ re’ss opt option ion,, if not spe specific cifically ally req reques uested ted by the purchaser.
9.2 Cop Copper per-be -beari aring ng ste steel, el, with 0.20 % min minimu imum m cop copper per,, may be ordered in any of the grades shown in Table 1 or 1 or Table Table 2. 9.3 An analys analysis is of each heat heat of steel shall shall be made by the basic steel producer to determine the percentage of the elements men ts spe specifi cified. ed. The hea heatt ana analys lysis, is, as sup suppli plied ed by the ste steel el melter, shall conform to the requirements of Table of Table 1 or 1 or Table Table 2. 2.
8. Surf Surface ace Finish Finish 8.1 Specia Speciall surface finishes finishes as may be required required for for specific specific appl ap plica icatio tions ns sh shal alll be pr prov ovid ided ed in th thee pu purc rcha hase se or orde derr by agreement between the producer and purchaser.
9.4 Wh 9.4 When en a gr grad adee is or orde dere red d un unde derr th this is sp speci ecific ficati ation on,, supplying suppl ying an alloy grade that specifi specifically cally requires the additio addition n of any element other than those listed for the ordered grade in Table 1 and and Table Table 2 is 2 is not permitted.
9. Base Metal Chemical Chemical Composition Composition 9.1 The chemical chemical compositio composition n of the sheet sheet steel base base metal shall conform to the requirements of Table of Table 1. 1.
5
A787/A787M − 15 TABLE 6 Diameter Tolerances for Metallic-Coated Round Tubing (SI units) Outside Diameter RangeE , mm
Wall Thickness, mm
Tubing with Any Inside Flash Condition
11. Product Analysis 11. 1.1 1 Wh When en re requ ques ested ted on th thee pu purc rcha hase se or orde derr, a pr prod oduc uctt analysis shall be made by the supplier. The number and source of sa samp mple less fo forr a pr prod oduc uctt an anal alys ysis is sh shal alll be ba base sed d on th thee individual heat or lot identity of one of the following forms: 11.1.1 Heat Identity Maintained— One One product analysis per heat shall be made on either the flat-rolled stock or tube. 11.1.2 Heat Identity Not Maintained— One One product analysis shall be made from each 2000 ft [600 m] or fraction thereof for sizes over 3 in. [75 mm] outside diameter, and from each 5000 ft [1525 m] or fraction thereof for sizes 3 in. [75 mm] outside diameterr and under diamete under..
FlashControlled to 0.13 mm Tubing OnlyA Inside Diameter Plus and Minus
1 3 to 2 5
0 . 7 0 /1 .5 0
OutsideB ,C Diameter, Plus and Minus Tolerances, mmD 0 .0 9
Over 25 to 50, incl Over 25 to 50, incl
0 .7 0 /1 .5 0 2 .5 0 /3 .5 0
0. 13 0. 13
0 .5 3 0 .6 9
Over 50 to 75, incl Over 50 to 75, incl
1 .0 0 /1 .5 0 2 .5 0 /3 .5 0
0. 17 0. 17
0 .5 8 0 .7 4
Over 75 to 100, incl Over 75 to 100, incl
1 .0 0 /1 .5 0 2 .5 0 /3 .5 0
0 .2 3 0 .2 3
0 .6 6 0 .8 1
Over 100 to 125, incl Over 100 to 125, incl
1 . 0 0 /1 .5 0
0 .5 1
0. 94
2 . 5 0 /3 .5 0
0 .5 1
1. 09
Over 125 to 150, incl Over 125 to 150, incl
1 . 0 0 /1 .5 0
0 .5 1
0. 94
2 . 5 0 /3 .5 0
0 .5 1
1. 09
Over 150 to 200, incl Over 150 to 200, incl
1 . 0 0 /1 .5 0
0 .6 3
1. 22
2 . 5 0 /3 .5 0
0 .6 3
1. 50
Over 200 to 250, incl Over 200 to 250, incl
1 . 5 0 /2 .5 0
0 .7 6
1. 22
2 . 5 0 /3 .5 0
0 .7 6
1. 50
Over 250 to 375, incl Over 250 to 375, incl
1 . 5 0 /2 .5 0
1 .0 0
1. 22
2 . 5 0 /3 .5 0
1 .0 0
1. 50
0 .4 8
11.2 Sample 11.2 Sampless for produ product ct spectrochemical spectrochemical analysis shall be taken in accordance with procedures established with the tube produc pro ducer er and the test testing ing lab labora orator tory y. The com compos positio ition n thu thuss determined shall correspond to the requirements in Table 1 or 1 or Table 2 and be within the composition tolerances shown in Table 7. 7. 11.3 11 .3 If the original original test for product product analysis analysis fails, fails, retests of of two additional samples of flat-rolled stock or tubes shall be made. Both retests for the elements in question shall meet the requirement requi rementss of of Tabl Tablee 1 or Table Table 2, and Tabl Tablee 7, of th this is specification; otherwise, all remaining material in the heat or lot shall be rejected or, at the option of the producer, each length of flat-rolled stock or tube may be individually tested for acceptance. accepta nce. Any retested material not meeting the requirements requirements of this specification shall be rejected. 12. Permissible Variations Variations in Dimensions for Round Tubing 12.1 Wall thickness ess toler toler-Wall Thickn Thickness ess and Diamet Diameter— er— Wall thickn ances for tubing made from precoated steel are shown in Tables 3 and 4. 4. All wall thickness tolerances include both the base steel and the coating (inside and outside surfaces). Variations in outside diameter and inside diameter of as-welded tubing made from precoated steel are shown in Tables in Tables 5 and 6. 6.
A
Flash controlled to 0.12 mm maximum tubing is produced to outside diameter tolerances and wall thickness tolerances, tolerances tolerances, inside diamet diameter er tolerances and wall thickness thick ness tole tolerance rances, s, or outs outside ide diam diameter eter tole tolerance rances s and insi inside de diame diameter ter tolerances, in which the height of the remaining inside welding flash is controlled not to exc exceed eed 0.12 mm. Any rem remain aining ing flash is con consid sidere ered d to be par partt of the applicable inside diameter tolerances. B Flash-in tubing is produced to outside diameter tolerances and wall thickness tolerances only, and the height of the inside welding flash does not exceed the wall thickness or 2.4 mm, whichever is less. C Flash controlled to 0.25 mm maximum tubing consists of tubing over 16 mm outside diameter which is commonly produced to outside diameter tolerances and wall thickness tolerances only, in which the height of the remaining inside welding flash is controlled not to exceed 0.25 mm. D The ovality shall be within the above tolerances except when the wall thickness is less than 3 % of the outside diameter, in which cases see 12.5 see 12.5.. E Measured at least 50 mm from the cut end of the tubing.
12.2 Length— Mechanical Mechanical tubing is commonly furnished in mill lengths 5 ft [1.5 m] and over. Mill length tolerances are given giv en in Table Table 8. Definit Definitee cut len length gthss are fur furnis nished hed whe when n specified by the purchaser. Tolerances for definite length round TABLE 7 Tolerances for Product Analysis for Steels Shown in Table 1A
Element
Carbon
10. Coati Coating ng Bath Chemical Chemical Comp Compositi osition on 10.1 When tubing tubing is produced produced from from precoated precoated sheet steel, steel, the tubing manufacturer shall furnish, upon request, a report stating that the tubing has been manufactured from precoated sheet steel meeting one of the following specifications: A463/ A463M,, A653/A653M A463M A653/A653M,, A792/A792M A792/A792M,, and and A924/A924M A924/A924M..
M an ga n es e Phosphorus S ul f ur Copper A
Limit or Maximu Maximum m of Specified Range, %
to 0 . 1 5 , i n c l o v e r 0 .1 5 to 0 . 4 0 , i n c l o v e r 0 .4 0 to 0 . 5 5 , i n c l to 0 .6 0 , i n c l o v e r 0 .6 0 to 1 . 0 0 i n c l ... ... ...
Variation, Over the Maximum Limit or Under the Minimum Limit Under min, %
Over max, %
0 .0 2 0 .0 3 0 .0 3 0. 03 0 .0 4 ... ... 0 .0 2
0 .0 3 0. 04 0. 05 0 .0 3 0. 04 0 .0 1 0. 01 ...
Individual determinations may vary from the specified heat limits or ranges to the extent shown in this table, except that any element in a heat may not vary both above and below a specified range.
10.2 For post-coated post-coated tubing tubing the zinc zinc used for coating coating shall be any grade of zinc conforming to Specification B6 B6.. 6
A787/A787M − 15 TABLE 8 Mill Cut-Length Tolerances for Round, Square, and Rectangular Tubing Outside Diameter Size, in. [mm] 1 ⁄ 2 to 15 [13 to 380], incl
5 ft to Under 24 ft [1.5 to Under 7.3 m] +1.0, −0.0 in. [+25, –0.0 mm]
TABLE 10 Cut-Length Tolerances for Tubing Punch-, Saw-, or Disc-Cut Round Tubing
24 ft and OverA [7.3 m and Over] +4.0, −0.0 in. [+100, –0.0 mm]
Outside Diameter Size, in. [mm]
A
Manufacturing practices may limit the length available; therefore, when inquiring, it is essential to describe the product fully. ⁄ 2 to 3 [13 to 75] incl. Over 3 to 6 [75 to 150], incl. Over 6 to 8 [150 to 200], incl. 1
tubing shall be given in Table 9 and 9 and Table 10. 10. Different types of cutting methods will affect the end cut. 12.3 Squareness of Cut— When When specified, the tolerance for squareness of cut of round mechanical tubing is shown in Table in Table 11.. Measurements are made with the use of an “L” square and 11 feeler gauge. The contact length of the side leg of the square along the tube will be equal to or greater than the tube outside diameter, but not less than 1 in. [25 mm] nor greater than 4 in. [100 mm]. The other leg shall always be equal to or greater than the tube outside diameter.
64 [0.4] ±1 ⁄ 64
32 [0.8] ±1 ⁄ 32
32 [0.8] ±1 ⁄ 32
64 [1.2] ±3 ⁄ 64
16 [1.6] ±1 ⁄ 16
16 [1.6] ±1 ⁄ 16
64 ±3 ⁄ 64 [1.2] 16 ±1 ⁄ 16 [1.6] ±1 ⁄ 8 [3.2]
16 [1.6] ⁄ 16
1
16 [1.6] ⁄ 16
1
1
1
16 [1.6] ⁄ 16
1
⁄ 8 [3.2]
1
16 [1.6] ⁄ 16
1
⁄ 4 [6.4]
⁄ 8 [3.2]
1
⁄ 4 [6.4]
Over 4 to Over 2 to Over 3 to 10, 3, incl 4, incl incl [Over 50 to [Over 75 to [Over 100 75 mm, 100 mm, to 250, incl] incl] incl]
Under 1 [Under 25]
Under 1 [0.3]
0.006 [0.15]
0.008 [0.20]
0.010 [0.25]
0.015 [0.38]
0.020 [0.51]
Over 1 to 3 [0.3 to 1], incl
0.008 [0.20]
0.010 [0.25]
0.015 [0.38]
0.020 [0.51]
0.030 [0.76]
Over 3 to 6 [1 to 2], incl
0.010 [0.25]
0.015 [0.38]
0.020 [0.51]
0.025 [0.64]
0.040 [1.02]
Over 6 to 8 [2 to 3], incl
0.015 [0.38]
0.020 [0.51]
0.025 [0.64]
0.030 [0.76]
0.040 [1.02]
Actual squareness normal to length of tube, not parallelness of both ends. Values given are “go” value of feeler gauge. “No-go” value is 0.001 in. [0.025 mm] greater in each case. B
the nominal wall thickness and is measured at the center width of the unwelded sides. 13.2 Corner Radii— Unless Unless otherwise otherwise specifi specified ed the inside and outside corners of square and rectangular tubing shall be slightly slig htly rou rounde nded, d, con consis sisten tentt with the tub tubee wall thi thickn ckness ess.. A slight radius flattening can be expected and is more pronounced with heavier-walled tubing. However, the radii of the corners shall be in accordance with Table with Table 13. 13. 13.3 Squareness of Sides— Permissible Permissible variation of squareness of sides shall be determined by the following equation:
TABLE 9 Cut Length Tolerances for Lathe-Cut Round Tubing
1 ⁄ 2 to 3 [13 to 75], incl Over 3 to 6 [75 to 150], incl Over 6 to 8 [150 to 200], incl
Length Tolerance, Plus and Minus, in. [mm] 1 1 1 16 [1.6] 16 [1.6] ⁄ 16 ⁄ 16 ⁄ 8 [3.2] ⁄ 4 [6.4]
1
A
13.1 Diameter and Wall Thickness— Permissible Permissible variations in outsid outsidee dimens dimensions ions for squar squaree and rectangular rectangular tubin tubing g are shown in Table in Table 12. 12. The wall thickness tolerance is 610 % of
48 in. and Under 10 ft [1.2 and Under 3.0 m]
10 ft. and 24 ft. incl [3.0 and Under 6.0 m]
1 to 2, incl [25 to 50 mm, incl]
Length of Tube, ft [m]
13. Permissible Variations Variations in Dimensions of Square and Rectangular Tubing
12 in. and Under 48 in. [300 mm and Under 1.2 m]
48 in. and under 10 ft. [1.2 and Under 3.0 m]
Outside Diameter, in. [mm]B
12.5 Ovality— Ovality Ovality is the difference between maximum and min minimu imum m out outsid sidee diam diamete eters rs mea measur sured ed at any one cro cross ss section. The ovality shall be within the tolerances of Tables Tables 5 and 6 except when the wall thickness is less than 3 % of the outside diameter. When the tube wall thickness is less than 3 % of the tube outside diameter the ovality may be 50 % greater than the outside diameter tolerances, but the mean diameter (average of maximum outside diameter and minimum outside diameter) shall be within the specified tolerance.
6 in. and Under 12 in. [150 and Under 300 mm]
12 in. and under 48 in. [300 and Under 1.2 m]
TABLE 11 Tolerance for Squareness of Cut (Either End) When Specified for Round Tubing A,B
12.4 Straightness: 12.4.1 Precoated The str straigh aightne tness ss tol tolera erance nce for Precoated Tu Tubing— bing— The round mechanical tubing shall be 0.030 in. [0.75 mm] maximum in any 3-ft [100-cm] length of tubing. The straightness tolerance on shorter lengths and on special requirements shall be agreed upon between the purchaser and producer. 12.4.2 Post-Coated Tubing— The The straig straightness htness requi requirement rement for pos post-c t-coate oated d tub tubing ing sha shall ll be by agr agreeme eement nt bet betwee ween n the purchaser and producer.
Outside Diameter Size, in. [mm]
6 in. and under 12 in. [150 and Under 300 mm]
10 ft to 24 ft, incl [3.0 and Under 6.0 m]A
6b 5
c 3 0.006 in. @ mm#
where: b = tolera tolerance nce for for out-of-s out-of-square, quare, and c = larg largest est external external dimension dimension across across flats in. in. [mm]. [mm].
±1 ⁄ 8 [3.2] ±1 ⁄ 8 [3.2] ±1 ⁄ 8 [3.2]
The squareness of sides is commonly determined by one of the follo following wing method methods: s: 13.3.1 13.3. 1 A square square with two adjustable adjustable contact contact points points on each arm is placed on two sides. A fixed feeler gauge is then used to measure the maximum distance between the free contact point and the surface of the tubing.
A
For each additional 10 ft or fraction thereof over 24 ft [3 to 7 m], an additional 16 in. [1.6 mm]. allowance should be made of ±1 ⁄ 16
7
A787/A787M − 15 TABLE 12 Tolerances, Outside DimensionsA Squar Square e and Rectangular Tubing Largest Nominal Outside Dimension, in. [mm]
Wal alll Th Thic ickn knes ess, s, in in.. [m [mm] m]
TABLE 13 Radii of Corners Corners of Electr Electric-Resi ic-Resistance stance Welded Square and Rectangular Tubing A
Outs Ou tsid ide e Tolerance at All Sides at Corners, ± in. [mm]
Squares and Rectangles Made from Tubes of the Following Diameter Ranges, in. [mm] ⁄ 2 to 11 ⁄ 2 [13 to 38], incl 1 ⁄ 2 to 21 ⁄ 2 [13 to 64], incl 1 ⁄ 2 to 4 [13 to 100], incl 1 ⁄ 2 to 41 ⁄ 8 [13 to 130], incl 3 ⁄ 4 to 41 ⁄ 8 [19 to 130], incl Over 41 ⁄ 8 to 6 [130 to 150], incl 1 to 41 ⁄ 8 [25 to 130], incl Over 41 ⁄ 8 to 6 [130 to 150], incl 11 ⁄ 4 to 4 [32 to 100], incl Over 4 to 6 [100 to 150], incl 11 ⁄ 4 to 4 [32 to 100], incl Over 4 to 6 [100 to 150], incl 2 to 4 [50 to 100], incl Over 4 to 6 [100 to 150], incl Over 6 to 8 [150 to 200], incl 1
5 16 to ⁄ 8, ⁄ 16 0.020 to 0.083 0.004 [0.10] [5 to 16] incl [0.50 to 2.11], incl Over 5 ⁄ 8 to 11 ⁄ 8 0.025 to 0.134 0.005 [0.13] [16 to 29], incl [0.64 to 3.40], incl Over 11 ⁄ 8 to 11 ⁄ 2 0.025 to 0.134 0.006 [0.15] [29 to 38], incl [0.64 to 3.40], incl Over 11 ⁄ 2 to 2 0.032 to 0.134 0.008 [0.20] [38 to 50], incl [0.81 to 3.40], incl Over 2 to 3 0.035 to 0.134 0.010 [0.25] [50 to 75], incl [0.89 to 3.40], incl Over 3 to 4 0.049 to 0.134 0.020 [0.51] [75 to 100], incl [1.24 to 3.40], incl Over 4 to 6 0.065 to 0.134 0.020 [0.51] [100 to 150], incl [1.65 to 3.40], incl Over 6 to 8 0.085 to 0.134 0.025 [0.64] [150 to 200], incl [2.16 to 3.40], incl Convexity and concavity: Tubes having two parallel sides are also measured in the center of the flat sides for convexity and concavity. This tolerance applies to the specific size determined at the corners, and is measured on the following basis: 3
Largest Nominal Outside Dimension, in. [mm]
21 ⁄ 2 [64] and under Over 21 ⁄ 2 to 4 [Over 64 to 100] Over 4 to 8 [Over 100 to 200]
Wall Thickness, BWG (in.) [mm]
Tolerance, Plus and Minus, in. [mm]
0 .0 1 0 [ 0 . 2 5 ] 0.015 [0.38] 0. 02 5 [ 0. 64 ]
22 (0.028) [0.7] 20 (0.035) [0.9] 18 (0.049) [1.2] 16 (0.065) [1.7] 14 (0.083) [2.1] 14 (0.083) [2.1] 13 (0.095) [2.4] 13 (0.095) [2.4] 12 (0.109) [2.8] 12 (0.109) [2.8] 11 (0.120) [3.1] 11 (0.120) [3.1] 10 (0.134) [3.4] 10 (0.134) [3.4] 10 (0.134) [3.4]
Radius Ranges, in. [mm]B 1 1 32 to ⁄ 16 16 ⁄ 32 [0.8 to 1.6] 1 1 32 to ⁄ 16 16 ⁄ 32 [0.8 to 1.6] 3 5 64 to ⁄ 64 64 ⁄ 64 [1.2 to 2.0] 1 7 16 to ⁄ 64 64 ⁄ 16 [1.6 to 2.8] 5 1 64 to ⁄ 8 ⁄ 64 [2.0 to 3.2] 3 5 16 to ⁄ 16 16 ⁄ 16 [4.8 to 7.9] 3 5 32 to ⁄ 32 32 ⁄ 32 [2.4 to 4.0] 3 5 16 to ⁄ 16 16 ⁄ 16 [4.8 to 7.9] 1 64 ⁄ 8 to 13 ⁄ 64 [3.2 to 5.2] 3 5 16 to ⁄ 16 16 ⁄ 16 [4.8 to 7.9] 1 32 ⁄ 8 to 7 ⁄ 32 [3.2 to 5.6] 7 7 32 to ⁄ 16 16 ⁄ 32 [5.6 to 11.1] 5 9 32 to ⁄ 32 32 ⁄ 32 [4.0 to 7.1] 7 7 32 to ⁄ 16 16 ⁄ 32 [5.6 to 11.1] 3 ⁄ 8 to 5 ⁄ 8 [7.8 to 15.9]
A A
This table establishes establishes a standa standard rd radius. The purcha purchaser ser and produc producer er may negotiate special radii. Slight radius flattening is more pronounced in heavier wall tubing. B These The se rad radius ius tol tolera erance nces s app apply ly to gra grades des of ste steel el cov covere ered d in in Table Table 1. The purchaser purcha ser and produc producer er may negoti negotiate ate tolerances on other grades of steel.
Measured at corners at least 2 in. [50 mm] from the cut end of the tubing.
13.3.2 A squar 13.3.2 squaree equipped equipped with a direct-rea direct-reading ding vernier vernier may may be used to determine the angular deviation that, in turn, may be related to distance in inches.
TABLE 14 Length Tolerances for Definite Length Square and Rectangular Tubing L e n g th s , ft [m ]
13.4 Length— Tole oleran rances ces for mill cut cut-le -lengt ngth h squ square are and rectang rect angular ular tubing tubing sha shall ll not exc exceed eed the amo amount untss sho shown wn in Tab able less 5 an and d 6. Tole Toleran rances ces for defi definit nitee len length gth squ square are and rectangular tubing shall not exceed the amount shown in Table 14.. 14
1 to 3 [0.3 to 1], incl Over 3 to 12 [1 to 4], incl Over 12 to 20 [4 to 6], incl Over 20 to 30 [6 to 9], incl Over 30 to 40 [9 to 12], incl
13.5 Twist— Twis wistt tol toleran erances ces are sho shown wn in Table Table 15 15.. The twist in square and rectangular tubing may be measured by holding one end of the tubing on a surface plate and noting the height of either corner of the opposite end of the same side above the surface plate. Twist may also be measured by the use of a beveled protractor equipped with a level, and noting the angular deviation on opposite ends, or at any point throughout the length.
Tolerances, in. [mm] Plus and Minus 16 ±1 ⁄ 16 [1.6] 32 ±3 ⁄ 32 [2.4] ±1 ⁄ 8 [3.2] 16 ±3 ⁄ 16 [4.8] ±1 ⁄ 4 [6.4]
leg will always be equal to or greater than the largest outside dimension of the tube.
13.6 Straightness— The The straightness tolerance is 1 ⁄ 16 16 in. in 3-ft length [1.7 mm/m].
14. Tubing Sections Other Than Square and Rectangular
13.7 Squareness of Cut— If If required, the squareness of cut for square and rectangular tubing shall be equal to or less than 0.050 0.0 50 in. [1. [1.27 27 mm]. Mea Measur sureme ements nts are mad madee wit with h an “L” square and feeler gauge. The contact length of the side leg of the square along the tube will be equal to or greater than the largest outside dimension of the tube but shall never be less than 1 in. [25 mm] nor greater than 4 in. [100 mm]. The other
14.1 In addition 14.1 addition to squ square are and rectangu rectangular lar tubing, tubing, many producers supply a wide variety of special sections. However, manufacturing practices limit the size range and sections that are available from the various producers. Since the sections are special, they must be inquired on an individual basis giving full details as to dimensions and finish. 8
A787/A787M − 15 TABLE 15 Twist Tolerances Electric-Resistance-Welded for Square and Rectangular Mechanical Tubing Larg La rges estt Di Dim men ens sio ion, n, in in.. [m [mm] m]
Under 1 ⁄ 2 [13] Over 1 ⁄ 2 to 11 ⁄ 2 [13 to 38], incl Over 11 ⁄ 2 to 21 ⁄ 2 [38 to 64], incl Over 21 ⁄ 2 to 4 [64 to 100], incl Over 4 to 6 [100 to 150], incl Over 6 to 8 [150 to 200], incl
17. Reje Rejectio ction n 17.1 Tub 17.1 ubes es th that at fa fail il to me meet et th thee re requ quir irem emen ents ts of th this is spec sp ecifi ificat catio ion n sh shall all be se sett asi aside de an and d th thee pr prod oduc ucer er sh shall all be notified.
Twi wist st Tol oler eran ance ce in 3 ft [m], in. [mm] 0 .0 3 2 [0 .8 1 ] 0 .0 5 0 [ 1 . 2 7 ] 0 .0 6 2 [ 1 . 5 7 ] 0 .0 7 5 [1 . 9 1 ] 0. 08 7 [ 2. 21 ] 0. 10 0 [ 2. 54 ]
18. Pro Product duct Marking Marking 18.1 18. 1 Each box, box, bundle, bundle, lift, or piece piece shall be identified identified by a tag or stencil with the manufacture’s name or brand, specified size,, typ size type, e, pur purcha chaser ser’s ’s ord order er num number ber,, and this spe specific cificatio ation n number. 18.2 Bar Coding— In In addition to the requirements in 18.1 barr co ba codi ding ng is ac accep ceptab table le as a su supp pple lemen mental tal id iden entifi tifica catio tion n method. The purchaser may specify in the order a specific bar coding system to be used.
15. Wor Workmanship, kmanship, Finish, and Appearance Appearance 15.1 The tubing tubing shall have have a workmanlike workmanlike finish. finish.
19. Pack Packagin aging g 19.1 19. 1 On tubing tubing 16 gau gauge ge (1.65 (1.65 mm nom nomina inal) l) and lighter lighter, the producer will determine whether or not the tubing will be boxed, crated, cartoned, packaged in secured lifts, or bundled to ens ensure ure saf safee del deliver ivery y unl unless ess oth otherw erwise ise ins instru tructed cted.. Tu Tubin bing g heavier than 16 gauge will normally be shipped loose, bundled, or in secured lifts. Special packaging requiring extra operations other than those normally used by a producer must be specified on the order.
15.2 When burrs burrs must be removed removed from from one or both both ends, ends, it shall be specified in the purchase order. 16. Oili Oiling ng 16.1 When specified, specified, tubing tubing shall have have a protective protective coating applied app lied before before shi shippi pping ng to ret retard ard white rus rustt of the meta metallic llic coating on closely nested products and red rust on non-recoated outside diameter weld areas. Should the order specify shipment without a protective coating, the lubricant incidental to manufacturing will remain and the purchaser will assume responsibility for rust in transit and storage.
20. Keyw Keywords ords 20.1 car 20.1 carbon bon stee steell tub tube; e; meta metallic llic-co -coated ated tub tubing ing;; res resista istance nce welded steel tube; steel tube; welded steel tube
SUMMARY OF CHANGES Committee Committ ee A01 has ide identi ntified fied the loca locatio tion n of sele selected cted changes changes to thi thiss spe specific cificatio ation n sin since ce the las lastt issu issue, e, A787 – 14, that may impact the use of this specification. (Approved May 1, 2015) (1) A definition of ovality was added to 12.5 12.5..
Committ Com mittee ee A01 has ide identi ntified fied the loca locatio tion n of sele selected cted changes changes to thi thiss spe specific cificatio ation n sin since ce the las lastt issu issue, e, A787 – 09, that may impact the use of this specification. (Approved May 1, 2014) restrictin cting g seam weld loc locatio ation n on sha shaped ped (1) Added 6.1.1 restri product. (2) Adde Added d Foo Footno tnote te F to Table Table 5 clarifying clarifying where diamet diameter er readings are to be taken.
Added ed Foo Footno tnote te E to Table Table 6 clarifying clarifying where diameter (3) Add readings are to be taken.
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