Line pipe is a pipeline project that conveys oil, steam and water from the ground to oil and natural gas industrial enterprises through pipeline pipes. With high strength, high impact toughness, low ductile and brittle transition temperature, excellent hydrogen induced cracking (HIC) and sulfide stress corrosion cracking (SSCC) properties and good welding properties.
The Line pipe can be divided into seamless pipe and welded steel pipe according to the production process. The seamless pipe can be divided into hot finished and cold finished; The welded pipe can be divided into includes ERW LSAW SSAW; The end of pipe can be flat end, threaded end and socket end; the connection mode can be end welding, hoop connection, socket connection, etc.
There are ISO 3183, API 5L, GB/T 9711, EN 10208 standards related to line pipes.