... Tianjin Material:Carbon steel Size:1/2'' to 72'' /DN15-DN2000 Thickness:sch10-XXS Certificate:API,ISO9001 Product Introduction Of ... antirust oil, hot-dipped galvanized Specificationsn Of steel elbow for pipes Tianjin YouXinDa International Trading Co.,LtdProduct Pipe ... , rust-proof oil, and hot-dipped galvanizedRange Of ApplicationChemical industry, petroleum industry, construction industry, domestic ...