Directly to Square ERW welded Square Pipe Profiles Roll forming welding Line Machine

Directly to Square ERW welded Square Pipe Profiles Roll forming welding Line Machine

Directly

to

S

quare

a

dvantage

s

:


Directly roll steel strip and form into Square& Rectangle, weld and then turks head to get finished pipes..
1) Compared with round into square& rectangle forming, this way is better for the shape at the corner edge of cross section, pipe inner radius is smaller, and the brim is flat, outlook is good looking.
2) And the whole line load is lower ,especially the load on sizing is lower.
3) The width of steel strip is smaller about 2.4-3% than round into square & rectangle, saving material.
4) It adopts the multi-point bending way, avoid the axial force and side abrasion, reduce the number of forming steps under the same quality, meanwhile it reduce the power wastage and roller abrasion.
5) It adopts the combined type roller on the most of the forming stands, realize that one set of roller can produce dozens of square& rectangle pipes of different dimensions, thus decrease the storage of roller, saving cost about 80% on roller, the roller turnover becomes faster, one new product design time is shorter..
6) The high frequency welding happens on top of square / rectangular pipe top, the same as round pipe welding.

Process of Directly to Square pipe making:


Coil strip loading→ Uncoiling → Straightening end → Flattener →Strip Steel head - tail butt welding→ Accumulator→ Forming → High-frequency induction welding → Removing external burr→ Cooling→ Sizing → Cutting → Out roller table → Checking & Collecting→ Binding→ Weighing → Marking → Accessing Warehouse

ERW

200x200

x

6.0

mm Pipe Mill Line


Steel

square

Pipe Specification


Square pipe: 80x80mm-200x200mm
Rectangular Pipe:60x100mm-150x250mm
Thickness : 1.5mm-6.0mm
Length: 6-12m

Strip steel

raw materials to make square / rectangular pipes


( Low carbon steel and low alloy steel:δS≤350 Mpa
Steel strip coil: Inner diameter: Φ610mm-720mm
Outer diameter: Φ1300mm-1800mm
Strip steel width: 320mm-800mm
Strip steel thickness: 2.0mm-6.0mm
Max.Coil Weight: 15 Tons

Electric installed capacity:

approx.1200KW


Forming speed:

Max. 40m/min

Max pipe size,max.thickness, and Max. Speed can't be reached at the same time.


u

nit operation direction:

customer decides


Unit operation level:

+ 850 mm


Size of the whole line:

approx.100 x 11 m

Power supply:

380

V,

5

0Hz



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