Hebei Haiqianwei Steel Pipe CO., LTD was founded in 2010, the total investment of the project is 300 million RMB with the total land area 140, 951 sqm, the production plant has the total construction area of 30, 000 sqm.It is located in the Zhenggang Industrial Development Zone in Yanshan County which is called “Chinese National Manufacture Base of Pipeline Euipment”。 The equipment can change mould quickly and simply, produce wide range of specifications, which is specialized in producing Longitudinal Submerged Arc welding Pipeline of outside diameter from 406.4mm to 1422.4mm , wall thickness from 6m to 50m, unit length from 3m to 12.5m, steel grade could be simple carbon steel, special type steel......