The indian hume pipe company offers bar-wrapped steel cylinder pipes. The bar-wrapped steel cylinder [bwsc] pipe is essentially a thin steel pipe cylinder; welded with thicker steel joint rings at the ends, hydraulically tested and centrifugally lined with cement mortar. The ms bar is helically wrapped on the cylinder with controlled tension ensuring intimate contact with cylinder and is then coated with cement mortar by high impaction process. This results in several performance advantages over conventional mortar united steel pipes and other metal pipes. The joint rings are made of thicker steel plates. The field joint can be overlapping/sliding, butt-welded or with confined rubber rings to suit requirement of the client. A joint is so designed that it will be water tight under all service conditions. The pipe is designed to resist internal hydrostatic pressure by steel cylinder and pre-tensioned helically wound rod. Hence, pipe can be custom designed by selecting steel-cylinder thickness, bar diameter, and spacing. These pipes can be made from 250 mm to 1400 mm diameters for working pressure up to 25-kg/ cm2. Length of each pipe shall be between 5-6 metres. Longer length pipes are also possible for large requirements.
