United Steel Industry Co., Ltd is based in China and lists steel pipe products on Global Trade Plaza. The company offers seamless pipes produced to international standards including API 5L, ASTM A106, JIS G3454, G3455, G3456, DIN1629, EN10216-1 and EN 10208. It also supplies ERW steel pipes and ERW welded pipes, including HFW pipe and ERW black pipe, for oil, gas and water transmission as well as machinery manufacturing.