Hot GI pipes for Building 1.OD:21.3mm-219mm ... 3.Zinc-coated:80GSM-200GSM 4.Length:5.8m-12m Hot GI pipes for Building1.OD:21.3mm-219mm2.Thickness: ... .Length:5.8m-12m Our company is specialized in producing Hot gi pipes, pregalvanized steel pipes, welded piped and so ... B) Zinc coating200-400g/m2 or as the customers' requirementTechniqueERW / Hot Rolled/cold rolled ApplicationUsed for gas or water pipes or ...