ASTM Standard
By Manufacturing Process
Seamless Pipes
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Definition: These pipes are made from a solid billet that is heated and then pierced to form a hollow tube, which is further processed into a pipe.
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Features: They have high pressure ratings and are suitable for high-temperature applications. Seamless pipes do not have a welded seam, which makes them more resistant to corrosion and able to withstand higher pressures.
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Standards: ASTM A312, ASTM A213, ASTM A358
Welded Pipes
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Definition: These pipes are made by rolling steel plates or strips into a cylindrical shape and then welding the seam.
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Features: They are generally more cost-effective than seamless pipes. The welding process can be controlled to ensure the quality of the joint, making welded pipes suitable for a wide range of applications.
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Standards: ASTM A312, ASTM A554, ASTM A240
ASTM Standards for Stainless Steel Pipes:
ASTM A312/A312M-18a – Specification for Seamless and Welded Austenitic Stainless Steel Pipes.
ASTM A778-Standard specification for welded unannealed austenitic stainless steel tubular products
ASTM A790/A790M-18 – Specification for Seamless and Welded Ferritic/Austenitic Stainless Steel Pipe.
ASTM A358/A358M-15 – Specification for Electric-Fusion-Welded Austenitic Chromium-Nickel Stainless Steel Pipe for High-Temperature Service and General Applications.
ASTM A813/A813M-14 – Specification for Single- or Double-Welded Austenitic Stainless Steel Pipe.
ASTM A814/A814M-15– Specification for Cold-Worked Welded Austenitic Stainless Steel Pipe.
ASTM A928/A928M-14 – Specification for Ferritic/Austenitic (Duplex) Stainless Steel Pipe Electric Fusion Welded with Addition of Filler Metal.
ASTM A943/A943M-01 – Specification for Spray-Formed Seamless Austenitic Stainless Steel Pipes.
ASTM A949/A949M-01 – Specification for Spray-Formed Seamless Ferritic/Austenitic Stainless Steel Pipe.
ASTM A249/A249M-18a Standard – Specification for Welded Austenitic Steel Boiler, Superheater, Heat-Exchanger, and Condenser Tubes
ASTM A269/A269M-16a – Specification for Seamless and Welded Austenitic Stainless Steel Tubing for General Service.
ASTM A268/A268M-10 – Specification for Seamless and Welded Ferritic and Martensitic Stainless Steel Tubing for General Service.
ASTM A511/A511M-16 – Specification for Seamless Stainless Steel Mechanical Tubing and Hollow Bar.
ASTM A632-04 – Specification for Seamless and Welded Austenitic Stainless Steel Tubing (Small-Diameter) for General Service.
ASTM A789/A789M-18 – Specification for Seamless and Welded Ferritic/Austenitic Stainless Steel Tubing for General Service.