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~ill!'i A 999;A 999M i2.2 Forged and Bored, Cast, and Cast Cold-~Vr(]ught-If specific Clit lengths are ordered, no length of pipe shall be under the length specified or more than 1/8 in. [3 mm] over that
9. Pe.-Iuissibie Variations in \Vali Thickness 9.i Sean'liess and Welded-Except as noted in 9.1.i~ the nUIllmUm waH thick_lless at any point shaH not be more than 12.5 % under the nominal waH thickness specIfied. The nummum waH thickness on inspection is shown in Tabie XL L 9. i.l Lv1uu;;uun vYali- vV' neil the wan tillCKness or tne pipe is specified as ililrJ1ffiUm wall in the purchase order, there shall be no variation under the specified "vall thickness. 9.2 l,-'orged and Bored-The vva!! thickness shall not vaI"j over that specified by more than Vs in. [3.2 mm]. There shall be
specified.
12.3 For pipe ordered to random lengths~ the lengths and variations shall he agreed upon het\J/cen the ma.nufacturer and purchaser. 12A No girth weids are pennitted uniess agreed upon by the manufacturer ana purchaser. 13.. Standard ,X/eight (,x/eight per Unit Length)
no variation under the specified \,:lJall tl'-JcY",_ness.
i 5.1 A system of standard pipe sizes has been approved by the American l~atiGnal Standards Institute as Ai~SI B36.10 and B36.19. The standard sizes do not prorJ.bit the production arid use of other sizes of pipe produced to the various product specifications referenced in 1.1. (See ~Jote 3.) 13.2 For nonstandard sizes of pipe" the calculated \veight per foot shall be determined from the follo\Jling equation:
9.3 Cast-The waH thickness shaH not vary over that specified by more than '116 in, [L6 nun), There shall be no variation under the specIfied waH thIckness.
Hi. Permissibie Variations in inside Diameter
10.1 ,:I;'orged and Bored, and Cast-The inside diameter shall not vary under that specified by more than 1/15 in. [!.6 mm]. fhere shall be no va..riation over the specified inside diameter.
r
tolerances on outside diameter include ovality except as provIded tor in ! 1.2 and! 1.2.1. (See Note 2.) 11.2 For thin-waH pipe, de!med as pipe having a wall thickne~s of 3 'In or iess of the OUlside diameter, the diameter tolerance ot Ulbie 1 is applicabie only to the mean of the extrenle (maxinlunl and nlininlum) outsi(1e diameter readings in anyone cross-sectiun. 11.2.1 For thin~\vall pipe the difference in extreme outside readings (ovality) in anyone cross..section shaH not exceed 1.5 % of the specified outside diameter.
NoT!' 'i-The weights given in the American Nationai Standards and the calculated weights given by Eq I are based on the ""'eights for carbon steel pipe_ The weight of pipe made of ferritic sta.inless steels: may be up ro about 5 % less. and rhaI made of ausrenitic stainless steel up to aboUl 2 % greater than "[he values given.
NOTE 2-ThJn-waH pipe usually develops significant ovalitv (out-ofroundness) during final ailneaiing. straightening, or both. The diameter !olera.;*lces of Table 1 arc usually not sufficient to provide for additional Qvality expected in thin-wali pipe.
Ends 14.1 Unless nthprwise specified, the pipe sha!! be furnIshed with piain ends. Ail burrs at the ends of the pipe shall be removed.
12. Permissible Variations in Length 12.1 Searnless and Vlelded (1"./0 fc;'iller 1'v1etal ,Added)-lf specific cut lengths of 24 ft [7.3 m] or less are ordered, no length of pipe shaH be under the length specified or more than V4 in. [6 mmj over that specified. ! 2. L! PennissibIe variations in length for lengths greater than 24 ft [7.3 m) shaH be subject to agreement herween the manufacturer and purchaser.
8-i h , inc! Over 11/2 to 4. incl Ovei 4 te 8, inc! Over 8 to i8. inci Over 18 to 26, inc! Over 26 to 34, inc; Over 34 to 48. inc! 1/
1
15.. Straightness 15.1 The finiShed pipe shaH be reasonably straight. 15.2 For metal-arc \velded pipe, the maximum deviation f1'orn a lO-ft [3.0-rn] straightedge placed so that both ends are in contact \vith the pipe shaH be l/g in. [3.2 mmJ. For rnetal~arc \velded pipe ,\lith lengths shorter than 10 ft [3.0 mJ~ this maximum deviation shall be prorated \vith respect to the ratio ot the actual length to ! 0 ft [3.0 m].
Permissible Variations in Outside Diameter Over
Under
in.
mm
1;64 (0.015) 1/'32 (0.031) V16 (0.062; 3/32 (0.093) 1/8 (0, 125) 5h2 (O.i56) 3/113 (0. 187)
t'"i )l
m.
mm
(0.031
O.S
(0.031 (0.031 Y32 (O.03i 1/'32 (0.031 '132 {0.031 V32 (0.031
".~
1(32
0.8 1.6 2.4 3,2
V32
0.8
1;32
0.8 0.8 0.8 0.8
4.0 4.8
16. i Repair by welding of defects in seamless pipe (including centrifugai1v cast pipe and forged and bored pipe) and of plate deiects in welded pipe and, when speclficaiiy stated by the product speCification., weld seani aefects In weided pipe shaH be perrn.itted subject to thc. approvai of the purchaser and \-vitt the further understanding that the cornposition of the deposited filler TI1etal shall be suitable for the compositiou
0,8
3
Copyright by the ASTM International Sat Feb 02 10:13:45 2008
( i)
where: C 10.69 [0.02466J, \~I = \veight. Iblft [kg/m], D = specified or calcuiated (from specified inside diameter and wail thickness) outside diameter, in. [mm!, and specified wail thickness, in. (to j aecimal placesj imlli to 2 decimal places]. i3.3 \Vhen nunanurn waH thickness IS specified on the purchase order. the calculated \.veight per foot shall be deterrr:.ined using Eq !, obtaining from Table X 1.1 the nOIT':.ina! \vaH thickrlcsso; to; corresponding to that ITlinimum \valL
iL Permissible Variation in Outside Diameter 11.1 Variations in outside diaineter~ unless otherOYvise agreed upon~ shaH not exceed the lirrits prescribed in Table !. The
NPS Designator
= C(D-;)i
~~~ A 999fA 999M being \:velded. Defects shaH be thoroughly cr:.ipped or ground out before \velding and each repaired length shaH be reheat treated or stress relieved as required hy the applicahle specification. Each length of repaired pipe shaH be nondestructively tested as required by the product specification. 16.2 Repair welding shall be performed using procedures and \velders or \x;elding operators that have been qualified in accordance \vith the .A.. ~MH Boiler and Pressure Vessel Code, Section LX.
of steel, 0.07 for Iuedh.ul1 carbon steel (ulaximui11 specified carbon 0.19 % or greater), 0.08 fer feH~tic alloy steel, 000 for austenitic steel, and. 0.09 for lo\v=carbon steel (maximum specified carbon 0.180/0 or less». During the second step~ \vhich is a test for soundness. the flattening shall be continued until the specimen breaks VI the opposite \'valls of the pipe meet.
20.2 Weided Pipe-A section of weioed pipe not iess than 4 in. fiDO mm] in iength shaH be fianened cold between paraHel piates in two steps. The weld shaH be placed at 90 from the
17. Retests 17. i if the results Oi {fie Certification tests of any lot do not conform to the requirenlents specified in the individual specification. retests filay be made on additional lengths of pipe of
0
direction of the applied force (at the point of maximum bending). During the first step, which is a test for ductility~ no ·11" . craCKS or oreaKS on (fie inSiOC or OU[SiOe sunaces, except as
double the original number from the same Jot. each of \vhich shall conform to the requirements specified. Only one retest of :lOV ----,j
lot nermlttec"L -Nonconfom1:1nce - - - \-"Jlll ----- he - - r---------· ------------------ \.vlll -.--- he --
1
confornl to the lest requirements rnay be resubmitted for test pro\'ided the reason for nonconformance is established and the
rnay he reheat treated and resubrnitted for test. The rnanufac~ rnay reheat treat the pipe. but not more than tV.lice. t?xcept
requIrements.
20.1.) Superficial ruptures resulting from surface imperfeclions shaH not be a cause for rejection.
approval of the purchaser.
20."\.4 When low D-to-t ratio tubular products are tested, because the strain imposed due to geometry IS unreasonably hIgh on the inside surface at the six and twelve o'clock iocations. cracks at these locations shall not be cause for reJeciloll if the U-io-i ratio is jess than lU.
19.. Test Specimens i 9. j Tc:st spc:cHnens shaH be taken from the ends ot finIshed pipe prior to any fom-ling operations. or being cut to iength. j 9~2 Specimens cut either iongitudinaiiy or shail be acceptabie for the tension test 19.3 If any test specimen ShO\liS fla\1/s or defective machinIng. the specimen may be discarded and another substituted.
2i. Nondestructive
20. i .)canlic.,'5; and Lellirijugai(V Cast Pipe-A sectIon of pipe not less than 2 1/2 in. [63 mm} in length shall be flattened cold bet\veen parallel plates in two steps. During the first step.. \vhich is a test for ductility, no cracks or breaks on the inside, outside~ or end surfaces.. except as pro·v'ided for in 20.3.4. shan occur until the distance bet\veen the plates is less than the value ot H calculated as fol!ov/s:
Requirements
/1I. 1\/ .
-
.~_,
2 i.2 Hvdrosiaiic Tesi: ~!.2.! t.xcept as provided In LLl.L and 21.2.3. each length of pipe shaH be tested by the manufacturer to a hydrostatic pressure which wiii produce in the pipe wan a stress not iess than 60 % of the minimum specified yieid strength for ferritic aHoy and srainiess steei pipe, or 50 % of the specified minimum yield strength for austenjtic aHoy and stainless steei pipe ami tor femltc/austemtlc stamiess steel pipe. The test pressure or stress shaH be determined by the foHowing equation:
(2)
where: 11 distance betv..'een flattt:ning plates, in. [n'lml,
in.
specified wall thicki,ess, [mill], specified outside djameter; outside diameter corresponding to specified ANSI pIpe size; or outside diameter cakuiated bv adding 2t (as defined above) to the specified insIde diameter in. [mm], and
P = 2St!D or 5 = PD!2t
\-vhere: P = hydrostatic test pressure In psi [~?1Pa]~ S pipe waH stress in psi or [MPal,
4
Copyright by the ASTM International Sat Feb 02 10:13:09 2008
T~st
21. i \Vhen required by the applicabie product specification or the purchase order, the pipe shall be tested by the hydrostatic test {see 21.2) or by the nondestructive electrical test (see
20. i"iattening Test Requirements
t D
•
20.3.2 Surface imperfections not evident in the test specImen before flattening, but revealed during the first step of flattening test, shaH be judged in accordance \~/ith the firrish
!ur~r
(i+t.')tf(e+uV)
I
20.3.! Evidence of laminated or defective material or \ve!d
i 8. i if individuai lengths of pipe selected to repiesent any lot fail to confonn to the test requirernent~, the lot r~pr~sented
ii =
.1"
that is revealed at any time during the entire flattening test shaH be cause for rejection.
Retreatment
th~
1
20.3 Seamiess, CentrifugaUy Cast, and Weided Pipe:
nonconforming portion removed.
\vith
I
provHlcd for in 20.3.4, shall occur until the distance bet\veen the plates is less than the value of Ii calculated by Eq 2. During the second step, which is a test for soundncs::;, the flattening shall be continued until the Spel.'lHien breaks or the opposite walls of the pipe Hleet.
for ------ ---
the rejection of the lot. ! 7.1 .A.ny individual length of pIpe that meets the test requiren1ents is acceptable. Individual lengths that do not
is.
deformation per unit length (constant for a given grade
e
(3)
