ASTM A312 Type 304H Welded Stainless Steel Pipes Surface Annealed / Pickled

ASTM A312 Type 304H Welded Stainless Steel Pipes Surface Annealed / Pickled

Stainless Steel Round Tube Standards:

A/SA 213 (ASTM/ASME A/SA213): Standard Specification for Seamless Ferritic and Austenitic Alloy-Steel Boiler, Superheater, and Heat-Exchanger Tubes

A/SA 249 (ASTM/ASME A/SA249): Standard Specification for Welded Austenitic Steel Boiler, Superheater, Heat-Exchanger, and Condenser Tubes

A/SA 268 (ASTM/ASME A/SA268): Standard Specification for Seamless and Welded Ferritic and Martensitic Stainless Steel Tubing for General Service

A269 (ASTM A269): Standard Specification for Seamless and Welded Austenitic Stainless Steel Tubing for General Service

A 270 / BPE (ASTM A270): Standard Specification for Seamless and Welded Austenitic Stainless Steel Sanitary Tubing

A/SA 312 (ASTM/ASME A/SA3120): Standard Specification for Seamless, Welded, and Heavily Cold Worked Austenitic Stainless Steel Pipes

A/SA358 (ASTM/ASME A/SA358): Standard Specification for Electric-Fusion-Welded Austenitic Chromium-Nickel Alloy Steel Pipe for High-Temperature Service

A/SA376 (ASTM/ASME A/SA376): Standard Specification for Seamless and Welded Austenitic Stainless Steel Pipe for High-Temperature Central-Station Service

A511 (ASTM A511): Standard Specification for Seamless Stainless Steel Mechanical Tubing

A554 (ASTM A554): Standard Specification for Welded Stainless Steel Mechanical Tubing

A 778 (ASTM A778): Standard Specification For Welded, Unannealed Austenitic Stainless Steel Tubular Products

A/SA 688 (ASTM/ASME A/SA 688): Standard Specification for Seamless and Welded Austenitic Stainless Steel Feedwater Heater Tubes

A/SA 789 (ASTM/ASME A/SA 789): Standard Specification for Seamless and Welded Ferritic/Austenitic Stainless Steel Tubing for General Service

A/SA790 (ASTM/ASME A/SA 790): Standard Specification for Seamless and Welded Ferritic/Austenitic Stainless Steel Pipe

Nominal Wall Thickness:

• Nominal Wall Tolerance Plus 12.5%, Minus 12.5%
• These do not conform to the American National Standard for Welded and Seamless Wrought Steel Pipe
  (ANSI B 36.10 – 1979)

Minimum Wall Thickness on Inspection:

• The following equation, upon which this table is based, may be applied to calculate minimum wall thicknesses from nominal wall thickness:
  • tn * 0.875 = tm
    Where:
    tn = nominal wall thickness, in. [mm], and
    tm= minimum wall thicknesses, in. [mm]
  • The wall thickness is inch-pound units is rounded to three decimal places in accordance with the rounding method of Practice E29. The wall thickness in SI units is rounded to one decimal place in accordance with the rounding method of Practice E29.
• This table is a master table covering wall thicknesses available in the purchase of different classifications of pipe, but it is not meant to imply that all the walls listed herein are
• necessarily obtainable for the applicable product specification.