What is the ERW steel pipe?
ERW tube or pipes are straight seams electric resistance welded pipe. in brief the EW pipe, which is a round pipe welded by steel
plates. It uses to transport vapor and liquid objects such as oil and natural gas. Electric resistance welding (ERW) refers to a group of
welding processes such as spot welding and seam welding. faying surfaces where heat to form the weld is born by the electrical
resistance of material combined with the time and the force used to hold the materials together during welding. In general,
resistance welding methods are efficient and cause little pollution, however, their applications limited to relatively thin materials.
Electrical resistance welding
Electrical resistance welding will be welder’s parts formed pressed between two electrodes, and subjected to current, the resistor.
thermal effects generated by the current flowing through contact with the workpiece surface and the neighboring regions to be
heated to melt the plastic state, so that metal-binding method. Resistance welding methods are mainly four types, namely, spot
welding, seam welding, projection welding, butt welding.
passed between the two edges of the steel to heat the steel to a point at which the edges are forced together to form a bond
without the use of welding filler material. A plate rolled to become a pipe and welded using the Electric Resistance Welding process.
Post time: Feb-10-2023