ASTM A 795 / ASME SA 795 STANDARD SPECIFICATION FOR BLACK BL ACK AND HOT-DIPPED ZINC COATED(GALVANIZED) COATED(GALVANIZED) WELDED AND SEAMLESS STEEL PIPE FOR FIRE PROTECTION USE 1
1 S!"#$ 1.1 This specification covers black and got-dipped galvanized welded and seamless steel pipe in sizes NPS 1/2Note 1! to NPS 1" incl#sive$ with wall thickness as given in Talbes 2 and %. Pipe having other wall thicknesses ma& be f#rnished provided s#ch pipe complies with all other re'#irements of this specification and the o#tside diameter is limited to those in the tables. Pipe ordered #nder this specification is intended for #se in fire protection s&stems. The pipe ma& ve bent$ b#t it is not intended for bending made at ambient temperat#re where in the inside diameter of the bend is less than twelve times the o#tside diameter of the pipe bing bentNote2!. Note 1- the dimensionless designator NPSnominal pipe size!gas been s#bstit#ted in this standard for s#ch traditional terms as (nominla diameter$( (size$( and (nominla size.( Note 2- S#ccessf#l bending of pipe is a f#nction of e'#ipment and techni'#e as well a spipe properties.
1.2 This pipe is s#itable for hoining b& the following methods ) 1.2.1 *ight-+eight fire Protection Pipe-,olled groove$ welding$ and gittings for plain end pipe. See Table 2 for dimensions. dimensions. 1.2.2 Standard-+eight fire Protection ire Protection Pipe-#t or rolled groove$ threading$ welding and gittings for plain end pipe. See Table % for dimensions. 1.2.% for pipe having dimensions other than those of Talbes 2 and %$ the hoining method m#st be compatile with the pipe dimensions. a complete lising of standard light weight dimensions appears in NS0 b%.1" and %.13.
1.% The following preca#tionar& caveat pertains onl& to the test method portion$ Sections 4$ 3$ and 1"$ of this specification ) This standard does not p#rport to address all of the safet& problems$ if an&$ associated with its #se. 0t is the responibillit& of the #ser of this standard to establish appropriate safet& and gealth practices and determine the applicabilit& of reg#lator& limitaions prior to #se.
C%$&'! !"&#"*'+'",
omposition$ ma5$ 6 7n P T&pe eelectric-resistance-welded! 8 T&pe Sseamless pipe! 9pen-hearth$ electric-f#mace or basic-o5&gen) :rade ".2; ".3; "."%; :rade ".%" 1.2" "."%; T&pe f#rnace welded pipe! 9pen-hearth$ electric-f#mace$ or basic o5&gen ".";"
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"."%; "."%; "."<;
M$!%,'! P"#$+'$* TABLE . D'&$*'",* W$'0%+* , T$*+ P$**2$ F" L'0%+ 3'$ P"+$!+'", P'#$-S!%$2$ 14 A
NPS =esignator %/< 1 1 1/< 1 1/2 2 2 1/2 % % 1/2 < ; 4 1"
9#tside =iameter in. 1.";" 1.%1; 1." 1.3"" 2.%?; 2.4?; %.;"" <.""" <.;"" ;.;% .2; 4.2; 1".?;"
Nominal +all Thickness
mm in. 2.? "."4. %%.< ".1"3 <2.1 ".1"3 <4.% ".1"3 ".% ".1"3 ?%." ".12" 44.3 ".12" 1"1. ".12" 11<.% ".12" 1<1.% ".1%< 14.% ".1%< 213.1 ".144 2?%." ".144
mm 2.11 2.?? 2.?? 2.?? 2.?? %."; %."; %."; %."; %.<" %.<" <.4 <.4
+eight Plain >nd lb/ft ".4 1.<" 1.41 2."4 2.< %.;% <.%% <.3? ;.1 ?.?? 3.23 1.3< 21.21
kg/m 1.24 2.1 2.?2 %.12 %.3 ;.%" .;" ?.< 4.% 11.;4 1%.4< 2;.<1 %1.42
Test Test Press#res Pr ess#res Seamless and >lectric#mace-+elded ,esistance +eld psi 7Pa psi 7Pa ;"" %.<; ?"" <.4% ;"" %.<; ?"" <.4% ;"" %.<; 1""" .43 ;"" %.<; 1""" .43 ;"" %.<; 1""" .43 ;"" %.<; 1""" .43 ;"" %.<; 1""" .43 ;"" %.<; 12"" 4.2? ;"" %.<; 12"" 4.2? 12"" 4.2? 1""" .43 4"" ;.;1 ?"" <.4%
Sched#le 1" corresponds to Sched#le 1"S as listed in NS0 %.13 for NPS %/< thro#gh onl&. #mace-welded pipe is not amde in sizes larger than NPS <. N9t Sched#le 1".
TABLE D'&$,*'",* W$'0%+ T$*+ P$**2$* F" S+,-W$'0%+ F'$ P"+$!+'", P'#$-S!%$2$ 4 , S!%$2$ 64
9#tside NPS =iameter =esignator 1/2 %/< 1 1 1/< 1 1/2 2 2 1/2 % % 12 < ; 4 1"
in. mm ".4<" 21.% 1.";" 2.? 1.%1; %%.< 1." <2.1 1.3"" <4.% 2.%?; ".% 2.4?; ?%." %.;"" 44.3 <."" 1"1. <.;"" 11<.% ;.;% 1<1.% .2; 14.% 4.2; 213.1 1".?;" 2? 2 ?%."
Nominal +all +eight Plain +eight Thread Thickness >nd nd o#plings o#plings in. ".1"3 ".11% ".1%% ".1<" ".1<; ".1;< ".2"% ".21 ".22 ".2%? ".2;4 ".24" ".2?? ".2??
mm 2.?? 2.4? %.%4 %.; %.4 %.31 ;.1 ;.<3 ;.?< ."2 .;; ?.11 ?."< ?.4"
lb/ft kg/m ".4; 1.2? 1.1% 1.4 1.4 2.;" 2.2? %.%4 2.?2 <."; %.; ;.<% ;.?3 4.2 ?.;4 11.24 3.11 1%.; 1".?3 1 1 ." 1<.2 21.? 14.3? 24.%< 2<.?" %.3" %<.2< ;1.1
lb/ft ".4; 1.1% 1.4 2.24 2.?% %.4 ;.42 ?.2 3.2" 1".3" 1<.41 13.14 2;.;; %;.?;
kg/m 1.2? 1.4 2.;" %.%4 <." ;.<4 4. 11.%< 1%.4 1.22 22."< 24. %4.1? ;%.<1
Test Test Press#re Seamless and #mace>lectric-,esistance +elded +eld psi 7Pa psi 7Pa ?"" <.4% ?"" <.4% ?"" <.4% ?"" <.4% ?"" <.4% ?"" <.4% 1""" .43 1""" .43 1""" .43 1""" .43 1""" .43 1""" .43 1""" .43 1""" .43 1""" .43 1""" .43 12"" 4.2? 12"" 4.2? 12"" 4.2? 12"" 4.2? 12"" 4.2? 12"" 4.2? 12"" 4.2? 1""" .43
ased on 2"-ft.1-m!lengths. #mace-welded pipe is not made in sizes larger than NPS <. NPS 1/2 thro#gh -Sched#le <"@ NPS 4 and 1"-Sched#le %".
TABLE D'&$,*'",* W$'0%+ T$*+ P$**2$* F" S+,-W$'0%+ F'$ P"+$!+'", P'#$ S!%$2$ 4 , S!%$2$ 64
9#tside NPS =iameter =esignator 1/2 %/< 1 1 1/< 1 1/2 2 2 1/2 % % 12 < ; 4 1"
in. mm ".4<" 21.% 1.";" 2.? 1.%1; %%.< 1." <2.1 1.3"" <4.% 2.%?; ".% 2.4?; ?%." %.;"" 44.3 <."" 1"1. <.;"" 11<.% ;.;% 1<1.% .2; 14.% 4.2; 213.1 1".?;" 2? 2 ?%."
Nominal +all +eight Plain +eight Thread Thickness >nd nd o#plings o#plings in. ".1"3 ".11% ".1%% ".1<" ".1<; ".1;< ".2"% ".21 ".22 ".2%? ".2;4 ".24" ".2?? ".2??
mm 2.?? 2.4? %.%4 %.; %.4 %.31 ;.1 ;.<3 ;.?< ."2 .;; ?.11 ?."< ?.4"
lb/ft kg/m ".4; 1.2? 1.1% 1.4 1.4 2.;" 2.2? %.%4 2.?2 <."; %.; ;.<% ;.?3 4.2 ?.;4 11.24 3.11 1%.; 1".?3 1 1 ." 1<.2 21.? 14.3? 24.%< 2<.?" %.3" %<.2< ;1.1
lb/ft ".4; 1.1% 1.4 2.24 2.?% %.4 ;.42 ?.2 3.2" 1".3" 1<.41 13.14 2;.;; %;.?;
kg/m 1.2? 1.4 2.;" %.%4 <." ;.<4 4. 11.%< 1%.4 1.22 22."< 24. %4.1? ;%.<1
Test Test Press#re Seamless and #mace>lectric-,esistance +elded +eld psi 7Pa psi 7Pa ?"" <.4% ?"" <.4% ?"" <.4% ?"" <.4% ?"" <.4% ?"" <.4% 1""" .43 1""" .43 1""" .43 1""" .43 1""" .43 1""" .43 1""" .43 1""" .43 1""" .43 1""" .43 12"" 4.2? 12"" 4.2? 12"" 4.2? 12"" 4.2? 12"" 4.2? 12"" 4.2? 12"" 4.2? 1""" .43
ased on 2"-ft.1-m!lengths. #mace-welded pipe is not made in sizes larger than NPS <. NPS 1/2 thro#gh -Sched#le <"@ NPS 4 and 1"-Sched#le %".
TABLE 1 C%$&'! R$2'$&$,+*
omposition$ ma5$ 6
7n
P
T&pe > electric-resistance-welded! 8 T&pe Sseamless pipe! 9pen-hearth$ electric-f#mace or basic-o5&gen) :rade ".2; ".3; "."%; :rade ".%" 1.2" "."%; T&pe f#rnace welded pipe! 9pen-hearth$ electric-f#mace$ or basic o5&gen ".";"
TABLE . D'&$*'",* W$'0%+* , T$*+ P$**2$ F" L'0%+ 3'$ P"+$!+'", P'#$ S!%$2$ 14 A
S
"."%; "."%; "."<;
NPS =esignator %/< 1 1 1/< 1 1/2 2 2 1/2 % % 1/2 < ; 4 1"
9#tside =iameter in. 1.";" 1.%1; 1." 1.3"" 2.%?; 2.4?; %.;"" <.""" <.;"" ;.;% .2; 4.2; 1".?;"
Nominal +all Thickness
mm in. 2.? "."4. %%.< ".1"3 <2.1 ".1"3 <4.% ".1"3 ".% ".1"3 ?%." ".12" 44.3 ".12" 1"1. ".12" 11<.% ".12" 1<1.% ".1%< 14.% ".1%< 213.1 ".144 2?%." ".144
mm 2.11 2.?? 2.?? 2.?? 2.?? %."; %."; %."; %."; %.<" %.<" <.4 <.4
+eight Plain >nd lb/ft ".4 1.<" 1.41 2."4 2.< %.;% <.%% <.3? ;.1 ?.?? 3.23 1.3< 21.21
kg/m 1.24 2.1 2.?2 %.12 %.3 ;.%" .;" ?.< 4.% 11.;4 1%.4< 2;.<1 %1.42
Test Test Press#res Pr ess#res Seamless and >lectric#mace-+elded ,esistance +eld psi 7Pa psi 7Pa ;"" %.<; ?"" <.4% ;"" %.<; ?"" <.4% ;"" %.<; 1""" .43 ;"" %.<; 1""" .43 ;"" %.<; 1""" .43 ;"" %.<; 1""" .43 ;"" %.<; 1""" .43 ;"" %.<; 12"" 4.2? ;"" %.<; 12"" 4.2? 12"" 4.2? 1""" .43 4"" ;.;1 ?"" <.4%
Sched#le 1" corresponds to Sched#le 1"S as listed in NS0 %.13 for NPS %/< thro#gh onl&. #mace-welded pipe is not amde in sizes larger than NPS <. N9t Sched#le 1". TABLE D'&$,*'",* W$'0%+ T$*+ P$**2$* F" S+,-W$'0%+ F'$ P"+$!+'", P'#$ S!%$2$ 4 , S!%$2$ 64
9#tside NPS =iameter =esignator 1/2 %/< 1 1 1/< 1 1/2 2 2 1/2 % % 12 < ; 4 1"
in. mm ".4<" 21.% 1.";" 2.? 1.%1; %%.< 1." <2.1 1.3"" <4.% 2.%?; ".% 2.4?; ?%." %.;"" 44.3 <."" 1"1. <.;"" 11<.% ;.;% 1<1.% .2; 14.% 4.2; 213.1 1".?;" 2? 2 ?%."
Nominal +all +eight Plain +eight Thread Thickness >nd nd o#plings o#plings in. ".1"3 ".11% ".1%% ".1<" ".1<; ".1;< ".2"% ".21 ".22 ".2%? ".2;4 ".24" ".2?? ".2??
mm 2.?? 2.4? %.%4 %.; %.4 %.31 ;.1 ;.<3 ;.?< ."2 .;; ?.11 ?."< ?.4"
lb/ft kg/m ".4; 1.2? 1.1% 1.4 1.4 2.;" 2.2? %.%4 2.?2 <."; %.; ;.<% ;.?3 4.2 ?.;4 11.24 3.11 1%.; 1".?3 1 1 ." 1<.2 21.? 14.3? 24.%< 2<.?" %.3" %<.2< ;1.1
lb/ft ".4; 1.1% 1.4 2.24 2.?% %.4 ;.42 ?.2 3.2" 1".3" 1<.41 13.14 2;.;; %;.?;
kg/m 1.2? 1.4 2.;" %.%4 <." ;.<4 4. 11.%< 1%.4 1.22 22."< 24. %4.1? ;%.<1
Test Test Press#re Seamless and #mace>lectric-,esistance +elded +eld psi 7Pa psi 7Pa ?"" <.4% ?"" <.4% ?"" <.4% ?"" <.4% ?"" <.4% ?"" <.4% 1""" .43 1""" .43 1""" .43 1""" .43 1""" .43 1""" .43 1""" .43 1""" .43 1""" .43 1""" .43 12"" 4.2? 12"" 4.2? 12"" 4.2? 12"" 4.2? 12"" 4.2? 12"" 4.2? 12"" 4.2? 1""" .43
ased on 2"-ft.1-m!lengths. #mace-welded pipe is not made in sizes larger than NPS <. NPS 1/2 thro#gh -Sched#le <"@ NPS 4 and 1"-Sched#le %".
