API 5L SSAW PIPE ,USED FOR TRANSPORT WATER,OIL,GAS,ETC. ... with the standard of SY/T5037-2000, GB/T9711 and API SPEC 5L, the material can be Q235A/B,Q345B, L245 ... heat power and water source etc.We build our factory on the basis of quality, and carry out the quality management ... years, our company put the customer first, establishes pre-sale, on –sale and after-sale service standard so that can completely ...