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Transcript of 8
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HIGHLIGHTS OFASTM SPECIFICATION FOR STAINLESS STEET TUBES AND PIPES
Specification Allowable Outside DiameterVarialion in mm
Allowable wallThickness Variation
Exact LengthTolerences in mm
Testing
Specification
ASTM .270Seamless & WeldedSanitary Tubes
Diameter
25.438.150.863.576.2101 .6
Over
.05
.05
.05 -
.05
.08
.08
Under
.20
.20
.28
.28
.30
.38
OverYo Under%
+12.5 -12.5+12.5 -12_5+12.5 -12.5+12.5 -12.5+12.5 -12.5+12.5 -12.5
Over
3.23.23.23.23.23.2
Under
0
0
0
0
0
0
Testing
Reverse Flattering test100% Hydrostatic testExternal polish on alltubesRefer to ASTM A - 270
ASTM A - 249Welded Boiler,Superheater,HeatExchanger andCondenser Tubes
Under 25.425.4-38.1incl38.1 -50.8 excl.50.8-63.5 excl.63.5-76.2 excl.76.2-10'1.6 incl.
0.1 0160.15240.20320.25.400.30480.3810
0.10160.15240.20320.25.400.30480.3810
+ 10 -10+10 -10+10 -10+ 10 -10+10 -10+10 -10
3.175 03.175 03.175 03.76 04.76 04.76 0
Tension Test,Fletting testFlare Test* Reverse Bend TestHardness Test1 00% Hydrostatic Test*Reverse Flattering TestRefer to ASTM A - 450Whenever applicable
ASTM A - 312Seamless &Welded Pipes
13.7 - 48.3 incl.48.3-114.3 incl.114.3-220 incl.
0.400.791.59
0.790.790.79
Minimum Wall tubes12.5% under nominal
wall Specified
6.4 U6.4 o
1u##tty nanoom tengths or?ered)
Tension TestFletting Test100% Hydrostatic Test
ASTM A - 269Seamless &Welded Service
Upto 12.712.7 -38.1 exct.38.1 -88.9 exct.
88.9 -139.7 excl.139.7 - 203.2 exct.
0.130.130.250.380.76
0.130.130.250.380.76
+15+'10
+10+10+10
15
10
IU
10
10
3.2 o3.2 o4.8 04.8 o4.8 o
Tension TestFlange Test(Welded only)Hardness TestReverse Flatterning test(Welded only)100% Hydrostatic TestRefer to ASTMA-269
ASTM A- 213Seamless Boiler,Superheater andHeat ExchangerTubes
Upto 25.425.4 -38.1 incl.38.1 -50.8 exct.50.8 - 63.5 encl.63.5 - 73.2 excl.76.2 - 101 .6 inct.
0.1 01 60.15240.20320.25400.30480.3810
0.10160.15240.20320.25400.30480.3810
+20+20+22+22+22+22
-0-U
-n-0-0-0
3.175 03.175 03.176 03.760 04.760 04.760 0
Tension TestFlattening TestHardness test'100% Hydrostatic Test
Refer to ASTMA - 450
ASTM A - 268Seamless &WeldedFemtic StainlessSteel tubes
Upto 12.712.7 -38.1 excl.38.1 - 88.9 excl.88.9 -168.9 excl.
0.130.130.250.38
0.130.130.250.38
+15 -15+10 -10+10 -10+10 -10
3.23.24.84.8
0
0
0n
Tension TestFlange Test CERW onlvHardness TestReverse Flattering Test100% Hydrostate Test
ASTM A - 358For Welded bigDiameter Pipes
For all size +0.5% 0.5Y0 NoLimit
-0.3mm
Customer'sSpecification
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