Supply Of Galvanized Portals & Ttc With Boom Etc. R.i Number Of The Material Description And Quantity Of The Materials As Per Attached Annexure. And Specification No: Is 2062, Is 808. Minimum Zinc Coating Thickness Should Be 610 Gm/sq Mtr Or 86 Microns As Per Rdso Specification No Eti/ohe/134/84..