Seamless pipe standard

　　API Spec 5L PSL1/PSL2 Gr.b, X42/46/52/56/65/70 Seamless steel pipe for line pipe

　　ASTM A53 Gr.B Black and hot-dipped zinc-coated steel pipes welded and seamless

　　ASTM A106 Gr.B Seamless carbon steel for high temperature service

　　ASTM SA179  Seamless cold-drawn low-carbon steel heat exchanger and condenser tubes

　　ASTM SA192  Seamless carbon steel boiler tubes for high pressure

　　ASTM SA210  Seamless Medium-carbon boiler and superheater tubes

　　ASTM A213 Seamless alloy-steel boiler, superheater, and heat-exchanger tubes

　　ASTM A333 GR.6 seamless and welded carbon and alloy steel pipe intended for use at low temperatures.

　　ASTM A335 P9,P11,T22,T91Seamless ferritic alloy-steel pipe for high-temperature service

　　ASTM A336 Alloy steel forgings for pressure and high-temperature parts

　　ASTM SA519 4140/4130 Seamless carbon for mechanical tubing

　　API Spec 5CT J55/K55/N80/L80/P110/K55 Seamless steel pipe for casing

　　DIN 17175 Seamless steel tube for elevated temperture

　　DN2391  Cold drawn seamless prevision pipe

　　DIN 1629  Seamless circular unalloyed steel tubes subject to special requirements

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