BS 1387 Galvanized Pipe 1.Dia:20-219 mm 2.WT:0.5-12m 3.Zinc:80-300g/m2 according to ASTMA 53/BS1387 4 BIGGEST MANUFACTURE COMPANY PROFILEBelonging to TIANJIN YUANTAI DERUN GROUP,TIANJIN YUANTAI INDUSTRIAL TRADE CO.,LTD is in the line of pipe-manufacturing nearly15years ,we are specialized in producing and exporting kinds of galvaznied steel pipes,big size square and rectanglar tubes,ERW welded ...