supply of aluminum self support ladder of size 20 feet, 3mm thickness c section 66x32x3.18 mm thickness of he-30 grade, t6 temper. stepsshall be made up of 26 mm x 3 mm thickness non slip, extra grip round corrugated fluted pipe steps .material for aluminium pipe to is 738 latest. ladder shallbe similar to model no.djssl-20 of dj industries, chennai , sumer, delhi, s k ladder, delhi.
