... , HVAC, Plumbing, Fabrication industry, Food Processing, Pharmaceutical, Petrochemical, Chemical, Machine Building, Fencing, Railing greenhouse Fencing, fence framework. Contractors, engineers, architects and ... -Dipped, Zinc-Coated, Welded and SeamlessJIS 3444 Carbon steel tubes for general structural purposes4)Steel Grade:IS 3589, IS 1239, IS:1161 Fe ...