Double Submerged Arc Welding Line

Tianjin Binhai Yashanway Import and Export Co., Ltd. is one of the leading manufacturers and suppliers of double submerged arc welding line in China, specialized in providing high quality customized service. If you're going to wholesale the newest double submerged arc welding line made in China, welcome to get free sample from our factory. For price consultation, contact us.

The double submerged arc welding line is the core complete set of welding equipment for the production of large-diameter spiral welded pipes. It is specially designed for the double-sided synchronous welding of pipe circumferential seams and longitudinal seams, using submerged arc welding technology to achieve efficient, precise and firm formation of the welds. The equipment is suitable for the welding of large-diameter steel pipes of various materials such as carbon steel and low-alloy steel. It has strong welding stability, high weld quality and excellent automation level, and is widely used in the large-scale production of spiral welded pipes, straight seam welded pipes, pressure vessels, and steel structure pipe fittings. It is a key equipment for pipe manufacturing in fields such as oil and gas transportation, municipal engineering, and steel structure construction.

1. Unwinding plate probe: After entering the unwinding plate production line, a full-plate ultrasonic test is conducted first.

2. Flattening and milling: The flat steel anvil machine is used to make the original plate curl, and then the double-sided steel is milled through the edge milling machine to meet the requirements of plate width, edge parallelism and groove shape.

3. Shearing and forming: The steel plate production line is spirally rolled along the outer edge to form a pipe.

4. Joint cutting: Double-sided submerged arc welding is pre-welded, inner welded and outer welded using advanced technology. The ion foot is cut to the specified length for the use of welded spiral pipes, etc.

5. Visual inspection: Professional technicians check some basic parameters.

6. Ultrasonic testing: 100% inspection of the inner and outer welds and the base metal on both sides of the weld.

7. X-ray inspection: 100% X-ray industrial television inspection image processing system for the inner and outer welds to ensure the detection sensitivity used.

8. Pressure test: Spiral steel pipe water pressure testing machine - individual testing to ensure that the pressure test pipe meets the required standards.

9. Chamfering and squaring: This is done after the inspection of the spiral steel pipe end processing to meet the requirements of the bevel size at the pipe end.

10. Final inspection: Ultrasonic and X-ray testing as well as magnetic particle inspection of the spiral steel pipe end are conducted again to check for any problems and defects at the welded pipe end.

11. Oil coating and marking: After passing through, the spiral steel pipe is coated with oil to prevent corrosion and marked according to the user's requirements.

Hot Tags: double submerged arc welding line, China double submerged arc welding line manufacturers, suppliers, factory, Double Submerged Arc Welding Line, Square Pipe Making Machine, High Frequency Welding Machine, steel pipe production line, Spiral Pipe Machine