Ferritic / Martenstic Precision Stainless Steel Tubing For Heat Exchanger
Product Details
precision steel pipe
,precision pipes and tubes
ASTM A268 Seamless and Welded Ferritic and Martenstic Stainless Steel Tubing for General Service
Brand : TORICH
Standard: ASTM A268
O.D: 12.7-203mm
Normal W.T : 5.1mm
Application : For boiler and heat-exchange
Tolerance of Size
Group Size,O.D in(mm) Permissible Variations in O.D in (mm)
1 up to1/2(12.7) ,excl +/- 0.005(0.13)
1/2 to 1,1/2(12.7 to38.1),excl +/- 0.005(0.13)
2 1,1/2 to 3,1/2 (38.1 to 88.9) excl +/- 0.01 (0.25)
3 3,1/2 to 5,1/2(88.9 to 139.7) excl +/-0.015(0.38)
4 5,1/2 to 8 (139.7 to 203.2) incl +/-0.03(0.76)
Merchanical Testd Required
Tension Tests
Flaring Test ( for seamless tubes)
Flange Test (for welded tubes)
Hardness Test
Reverse Flattening Test
Hydrostatic or Nondestructive Electric Test
SUPPLEMENTARY REQUIREMENTS
Air-Underwater Pressure Test
Additional Testing of Welded Tubing per ASME Request.
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