Supply of Profiled permanently color coated
Galvanised MS troughed metal sheet roofing conforming to IS 513-1994/2008. Total coat thickness (TCT) of sheet shall be minimum 0.50mm with base metal thickness without any coating shall be minimum 0.50mm with minimum yield stress 550 Mpa / 250 Mpa (ASTM A446, Grade E).
On top of base steel following coatings should be used :- Galvalume sheets shall conform to AZ 150 of AS 1397 or ASTM 792 with hot-dip metallic coating of 55% Al and 45% Zn alloy having total coating mass of min. 150 gms/m2 inclusive of both sides. including vertical / curved surface fixed with polymer coated J or L hooks, bolts and nuts 8 mm diameter with bitumen and G.I. limpet washers or with G.I. limpet washers filled with white lead, including a coat of approved steel primer and two coats of approved paint on overlapping of sheets complete (up to any pitch in horizontal/ vertical or curved surfaces), excluding the cost of purlins, rafters and trusses and including cutting to size and shape wherever required.
