Description: Bar-Wrapped Steel Cylinder (BWSC) Pipes are built as per IS 15155: 2002 standards. The pipe is designed to resist internal hydrostatic pressure generated by steel cylinder and pretension helically wound rod. Hence, pipe can be custom designed by selecting steel-cylinder thickness, bar diameter and spacing. It 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 M.S bar/wire 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. These pipes can be made in diameter ranging from 250 mm to 1600 mm for working pressure of up to 25 kg/cm2. The length of each pipe ranges from 5 - 6 meter. These pipes are made of steel plates of lesser thickness than conventional steel pipes. The additional strength for internal pressure and external load is provided by less expensive tensioned mild steel rod than steel plates. These pumps are used mainly for transmission and distribution water pumping mains, sea water mains and sewage water disposal mains.
