HSCO: Leading  steel pipe manufacturer and exporter£» With stocked 250,000 tons various of steel material in 520,000 square meters ware house; Rewarded ISO9001:2008,SGS,BV,RINA,ISO14001:2004 and etc, which guaranteed the good quality of our product; Superior geography and covenient transportation and spacious modern factory buildings with several deviations for steel pipe & pipe fitting manufacturing.