Hebei Xinyuantai Steel Pipe Group Co.,Ltd.is professional carbon spiral steel pipe manufacturer (pipelily (at) hotmail(dot)com) with a history of 14 years and its annual output is 200,000 tons of spiral steel pipe. The company has eight production lines. The product is spiral double-faced submerged-arc welded pipes. Diameter is from 219mm to 2320mm and wall thickness is from 5mm to 26 mm. Our product comply with the standard of API 5L, the material can be Q235A,B, Q345B and X42-X70.