These pipes are widely used for mechanical pipe, high pressure pipe, steel pipe for automobiles, cracking pipe, hydraulic pillar pipe and so on.
ASTM A179, A192, b10, A213, A519, A106, A53; DIN 2391, DIN 1629, DIN17175; API 5L, API 5CT; GB/T 8162, GB/T 8163, GB/T 3087, GB/T 5310, GB/T 9948