Baoji Petroleum Steel Pipe Co., Ltd. (Abbreviated as BSG) is under China National Petroleum Corporation (Abbreviated as CNPC), its original name was Baoji Petroleum Steel Pipe & Tube Works, which was established in 1958 and was one of 156 national key projects during the First Five-Year Plan in China. And it was also the first Spiral Submerged Arc Welded Pipe manufacturer in China. Over the past 50 years since established, in .....