Steel pipe, steel pipe fitting, flange, seamless carbon steel pipe, forged flanges, astm a106, astm a53, api 5l, api 5ct
Http://www.steelpipes.net.cn; cangzhou yicheng steel pipe manufacture co., ltd is professional steel pipe,steel pipe fitting,flange manufacturer; steel pipe, steel pipe fitting, flange, seamless carbon steel pipe, forged flanges, astm a106, astm a53, api 5l, api 5ct; oem service and buyer label are available; iso9001 and api certificate