... under the ISO9001 strictly.Company info. Cangzhou Guyuan Steel Pipe Co., LTD is located in cangzhou hebei China, was founded in ... 1991. The former name was Hebei Xinxing Steel Pipe Manufacture Co., LTD, online trading began in 1997. Currently our company is ... industrial pipe fittings enterprise.Main products are various domestic and international standards with all kinds of flanges, elbow, tee, cross, ...