supply of pre galvanized perforated (gi) cable tray with cover. , pre galvanized perforated (gi) cable tray with cover, 2mm thickness for body and cover. size : 150mm (width) x 75mm ( side height) x 2mm(thickness), gi sheet conforming to is 277, standard length : 2500mm, make of sheet: jsw/tata/amns/sail. necessary nut and bolt per length shall be provided. pre galvanized steel sheet confirming to is 277, zinc coating class z120-z275 (minimum 120-275 gsm) shall b e used for fabrication of cable trays suitable for factory environment. manufacturers test report shall be pr ovided along with the supply. warranty period: 12 months from the date of supply. [ warranty period: 12 months after the date of delivery ] ]