EFW steel pipe means electric fusion welding steel pipe, while ERW steel pipe refers to electric resistance welded pipe. They have different usages when talked about their application once they used among various engineering projects.

For EFW steel pipe, its main use would be focus on high-speed movement of the electron beam. Thus, it has directed impact kinetic energy for working on heat the workpiece so that the workpiece leaving the melt, the formation of the weld.

And for ERW steel pipe, there is combination between connections. Thus, we should consider the applying pressure through the electrodes. Under this situation, the use of current through the joint area of the contact surface and the adjacent heat generating resistance welding process method, Also known as contact welding. It has excellent toughness and dynamic load strength, welding deformation.