Marine engineering

ASTM A234 WP91 pipe fittings are forged carbon steel and alloy steel butt welded pipe fittings for high temperature use. The material is ASTM A234 WP91. This kind of pipe fitting is suitable for pipeline systems in high-temperature, high-pressure petroleum, chemical, natural gas and other industries.

ASTM A334 is a standard specification that covers several grades of seamless and welded carbon and alloy-steel tubes intended for low-temperature service. The grades include Gr1, Gr3, and Gr6.

ASTM A671 GR.CC60 steel pipe is a kind of pipe used for high-pressure purposes. It is mainly manufactured by electrofusion welding process and belongs to a grade in the ASTM A671 standard.

ASTM A519 1018 seamless steel pipe is a seamless steel pipe made of carbon structural steel.