ERW Black Steel Pipe means electric resistance welded pipes. These are manufactured by rolling metal and then welding it longitudinally. These steel pipes and tubes are useful in various engineering purposes, fencing, scaffolding, line pipes etc. ERW Black Steel Pipe are available in various qualities, wall thickness and diameters. These are useful in water and gas conveyance. These are mainly use in agriculture sector in hand pumps for deep boring wells and for drinking water in housing.