WHAT IS THE ADVANTAGE OF DFT TECHNOLOGY (DIRECT FORM TO SQUARE TUBE)

Directly Forming To Square Welded Pipe&Tube Line adopt 
Advanced technology of roller forming and High Frequency Welding that could continuously produce big size tube range from 50 x50 x1.5mm to 600x600x20mm.
For Max tube size 600x600x20 we create new innovation for cold roller forming industry especially for producing heavy duty square and rectangle tube  in our domestic China.This tube mill are compose of forming part,welding guide,5 squeeze welding roller,double working position scraper,grinding roller,size,transmmision part and cooling tank. 

Its characteristics:
1. Large and small edge molding, using online electric adjustment  when changing tube specifications, roller adopt horizontal axial movement without replace the roller.
2“Directly into the square” process adopts the world's most advanced multi-point pre-bend composite forming process. Adopt Composite roll,  forming period of roll designed according to principle: the arc lengturn to be radius. One set of roll can produce  square tube 100×100∽600×600, rectangular tube100∽600, the thickness of 6 toth  20 mm which all products within the scope can share, it can be cut down the cost of roller and roller change time

3 forming section adopts down forming method, which can effectively reduce the tensile deformation of edge, benefit for the production of the thin-wall tube, ensure the quality of the product.
4.For  design of this mill  it increased 2 independent rollers in the bottom, which can reduce the scratch and roller abrasion, fast and quick and easy to adjust.