drill pipe straightening machine_drill pipe straightening machine

ERW is one of the most common methods used for manufacturing welded pipes. In this technique, electrical current is passed through the edges of the plates, generating heat that melts the metal and fuses it together. This process is efficient and provides strong, seamless joints. On the other hand, SAW involves using an arc of electricity to create a weld pool, which is then filled with molten metal, providing a robust and durable connecting seam.