The expanding machine belongs to the straight seam metal welded pipe shaping equipment. It uses a conical expanding head to expand inside the steel pipe, eliminating the forming pressure and welding stress of the steel pipe, and ensuring that the true diameter of the entire length of the straight seam welded steel pipe is consistent. The equipment is carried out by a small car and expanded
Device, working sleeve, fixed seat, oil cylinder, lubrication station, bench, hydraulic station, and electric control system are composed. The expander is set on the trolley, connected to the oil cylinder by the working sleeve. The expander is composed of an expander head, an expander block, a guide plate, and a pull rod
A large-scale equipment that uses segmented mechanical extrusion and expansion technology to ensure the shape sizing and stress relief of straight seam metal welded pipes.
The main equipment of the large-diameter straight seam submerged arc welded pipe production line includes plate ultrasonic testing machine, milling machine, pre bending machine, forming machine, joint pre welding machine, internal welding machine, external welding machine, precision machine, straight seam pipe ultrasonic testing machine, X-ray testing machine, steel
Pipe expanding machine, steel pipe hydrostatic testing machine, magnetic particle ultrasonic testing machine, pipe end flat end chamfering machine, etc.
Product function: Adopting the principle of mechanical expansion, the steel pipe is gradually drilled through the expansion head to ensure that the ovality, straightness, and size of the steel pipe meet technical requirements and eliminate residual internal stress.
Production line processing range: 0360-01460 Wall thickness: 8-32mm Steel pipe length: 8000-12000mm Material: X42-X70, Q215-235 Product standards: ISO3183-3, AP15L, Spec5L
GB/T9711.1, GB/T9711.2, etc
Production: Annual output of large-diameter straight seam submerged arc welded pipes is 40000 to 150000 tons.
