Open Tender for Aluminium Extension Ladder as per IS 4571/1977 or Latest, Closed height : 06 mtrs, extended height : 11 mtrs ,Aluminium wall supporting extension ladder manufactured from Aluminium C shape section of size- 66.6 mm(L) X 31.7mm (w) X 3.5 mm (T) confirming to HE - 30 Grade T-6 temper as per IS: 733 and Aluminium 25 mm diameter Non Slippery round corrugated tubing fitted with heavy duty safety lock , nylon rope and pulley and rubber pads at bottom and top end. Twist proof and unbreakable performance. Make - S J ladders, King , Techoscient, Sumer , Safal OR SIMILAR in Andhra Pradesh