... 1.has the best quality 2.the reasonable FOB Tianjin port price 3.API/ISO certification carbon steel ... /2"-80" Basic InformationCompany Name:Hebei Gee Pipe Mill Co., Ltd Business Type:Manufacturer and exporterProduct/Service(We Sell): Elbow ... ISO9001:2000 , API , BV , SGS, CEApplications range: Petroleum, chemical, power, gas, metallurgy, shipbuilding.construction,water and nuclear power etc ...