Lsaw Steel Pipe, Petroleum Steel Pipe, Natural Gas Pipe, Api5Lpsl1, Oil Pipe, Lsaw Steel Pipe, Steel Pipe, Steel Pipe Lsaw, PipelineHebei Haiqianwei Steel Pipe was founded in 2010, the total investment of the project is 300 million RMB with the total land area 140, 951 m2, the production plant has the total construction area of 30,000 m2.It is located in the Zhenggang Industrial Development Zone in Yanshan County which is called ...