China Supplier ERW Steel Tube Making Machine

الوصف

Introduction of ERW steel pipe production line:
ERW steel pipe production line: At first, the coil is loaded at the uncoiler, then but-welding the ends of coil, delivering to accumulator. After accumulator, the strip is pulled from accumulator contentiously by fixed speed, is formed to opened-pipe at forming machine, then welded by High frequency welder, deburred, cooled, shaped and sized as round pipe and rectangular&square pipe at the sizing area. Then the sized pipe is straightened after Turkey-head device and then cutt to fixed length by flying saw. At last, the fixed pipe is delivered from run-out table and inspected at the table.
This line could produce the round pipe, the rectangular and square pipe by material of cold/hot-rolled coil etc. It could be used at the metallurgy, construction, transportation, machinery, automobile industry. Adopting W forming type, it could make much more reasonable force, and much more perfect forming shape at each stand etc.


Technical process:
Double workstation uncoiler→Hydraulic shear & end welder→Accumulator→Forming and sizing machine→Flying saw→Run-out table→Packing machine


Main equipments:
1. Double workstation uncoiler
Function: to unwind the coil. 
Structure: it has two mandrels mounted on a **0° swiveling bearing. One mandrel remains in line with pipe mill during operation while coil is loaded on other mandrel at backside by buyer supplied jib crane. Coil will be expanded or shrinked by hydraulic sliding block. Mandrels will stop swiveling by Pneumatic butterfly valve.
Advantage: fast feeding speed (one mandrel is for use, the other mandrel is for stock), easy operation.
2. Shear & end welder
Function: to shear and butt-weld the trailing end of a proceeding coil and the leading end of the next coil.
Structure: consist of manual shear, pre-after pinching roll, pre-after middle roll and welding equipment. 
3. Accumulator
Function: to store material for forming and sizing machine, and assure continuous production of forming and sizing machine.
4. Forming and sizing machine 
Main technical specification: