competitive e-bidding for supply of zincalume / galvalume steel profile sheets for season 2023-24 supply of zincalume / galvalume steel profile sheets for season 2023-24 , supply of bare zincalume traperzoidal profile roof sheet of 0.45 mm base metal thickness(0.51tct) of 935mm - 980mm effective cover width, with minimum 8 major corrugation, of 24 mm - 30mm high rib spaced at 93.5 mm or more c/c. the end rib shall have anti-capillary groove and return leg. the feed material shall be of 0.45mm bmt (0.51mm tct zincalume) steel-high tensile with min 550 mpa yield strength, metallic hot dipped coated with al-zn alloy (55% aluminum, 43.5% zinc, 1.5% si) as per as 1397/is15961 – zincalume az 200 (min. 200g/m² total on both sides) of steel make having the license of bethlehem international engineering corporation(biec). (as per technical specification) , same as above item 1.01 but supply of ridge caps (plain) widht / girth of total 600 mm