Rolling steel and welding longitudinally along the length produces electric resistance welding black steel pipe. As a result, the black welded steel pipe's cross section features welded joints. Fencing, scaffolding, line pipes, and other engineering applications use black ERW steel pipes.

Depending on the end-needs, user's these tubes and pipes are available in a variety of quality, wall thicknesses, sizes, and finishes. Construction, machinery manufacturing, steel construction projects, shipbuilding, solar power stents, steel structure engineering, electrical engineering, agricultural and chemical machinery, glass curtain wall, car chassis, airport, architectural decoration, chemical equipment, medical equipment, light industries, and so on all use black welded steel pipe.