With Grade S275 S275JRS 355JRHS 355J2H LSAW Structure Steel Pipe Longitudinal Submerged-Arc Welded Steel Pipe Process:LSAW Cangzhou HENGJIA pipeline Co., Ltd., as one of the branch of Hebei Long Run Pipeline Consortium, located in Zhanglongtan Development Zone of Yanshan County, known as "Chinese Piping Fabrication Base", is one of the largest companies specializing in manufacturing and selling steel pipes and fittings in North China.