Production process of straight seam welded pipe
Feb 27,2026
Steel plate inspection: Conduct full-plate ultrasonic inspection on steel plates used to manufacture straight seam welded steel pipes.
Cutting: The edges of both sides of the steel plate are milled by a milling machine to achieve the required width of the steel plate, as well as the parallelism of the plate edges and the shape of the groove.
Pre-bending: Use a pre-bending machine to pre-bend the plate edges to meet the curvature requirements. For thicker plates, a press machine can be used for pre-bending.
Forming: On the forming machine, first, half of the pre-bent steel plate undergoes multiple rolling processes to shape it into a "J" form. Subsequently, the other half of the steel plate undergoes similar operations to form a "C" shape. Finally, an open "O" shape is produced.
Pre-welding: After forming, the straight seam welded steel pipes are joined together and continuously welded using gas shielded welding.
Internal and external welding: Longitudinal multi-wire submerged arc welding is used for welding on both the inside and outside of straight seam welded steel pipes.
Trimming: Trim the entire welded steel pipe to ensure the precise dimensions required by the customer, and improve the distribution of internal stress within the steel pipe.
Inspection: According to customer requirements, we conduct ultrasonic inspection, X-ray inspection, hydrostatic testing, and other inspections on straight seam welded steel pipes. Additionally, we can perform anti-corrosion and coating treatments.
PREVIOUS:
Contact Us
Phone/Wechat
Address
West of the Credit Cooperative in Bobei Village, Gaozhai Town, Mengcun Hui Autonomous County, Cangzhou City, Hebei Province, China
Your One Stop, One Solution!
We can modify or process according to customer needs to meet the different requirements of various industries and departments.
CONTACT US
WhatsApp: +8615128799666
Phone: +8615128799666
Email: sales@yzsteelpipe.com
Add : West of the Credit Cooperative in Bobei Village, Gaozhai Town, Mengcun Hui Autonomous County, Cangzhou City, Hebei Province
FOLLOW US
