tender for earthing pipe of 40mm nominal bore & 4mm wall thickness & length 10 ft long as per is 1239 gi strip for neutral earthing of size 25 mm x 3 mm as per is 2629/85 earthing pipe of 40 mm nominal bore & 4mm wall thickness & length 10 ft long as per is 1239 gi strip for neutral earthing of size 25 mm x 3 mm with earth enhancement materials
