Seamless pipe standards are following
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