Marine engineering

ASTM A179 and ASTM A192 are specifications for carbon steel pipes used in different applications.

ASTM A672 B70 carbon steel EFW (electric arc furnace smelting) pipe is a stainless steel pipe that complies with the American ASTM standard. It is mainly used for the transportation of media such as steam, water, oil and other media in high temperature and high pressure environments. This kind of pipe has a high carbon content, good strength and corrosion resistance, and is suitable for long-term use in various harsh environments.

API 5L B-grade pipe is a pipe grade in the API 5L standard issued by the American Petroleum Institute. This pipe grade is mainly used in pipeline systems for transporting oil, natural gas and other fluids.

a234 is an American standard pipe fitting material, used for material representation of carbon steel elbows, tees, reducers, pipe caps, elbows and other products.