API Tube Mill Line ERW720

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ERW720 H.F. Straight Welded Pipe Production Line


ERW720 high frequency longitudinal welded pipe production line / pipe making machine / tube mill is designed to produce welded pipes of 355mm-720mm in OD and 6.0mm-22.0mm in wall thickness, as well as corresponding square and rectangular pipe. 
 
Products:  architectural structure tubes, API pipes and other products.
 
Equipment advantages:
√ China's largest straight seam welded pipe production line
√ Apply to high strength steel and big thickness
√ Raw material can be steel coil and single plate
√ ZTF forming process save roller up to 60%
√ With direct square forming technology, one set of roller can produce all pipe sizes
√ Electric control and automatic adjustment, high precision,high roller change speed
 
 
Basic Technical Information of Welded Pipe Production Line
  
Product&yield Round Pipe 355mm-720mm                    Thickness:6.0mm-22.0mm
Square & rectangle tube 300mm×300mm -600mm×600mm    Thickness:6.0mm-22.0mm
Length 6m-12m                           Length Tolerance: ±3mm
Production Speed 20 m/min
Production capacity 180,000ton/year
Consumption Mill installed capacity 1400 kw
Line Area 400m(length) ×40m (width) 
worker 6-8 workers
Raw Material Carbon steel coil & steel plate Q235B(ASTM GR·D,σs 230) & High-strength steel
 
  
Round pipe Cold roll forming process Good roller design
ZTF forming process Save roller up to 60% and realize electric control adjustment 
Square & rectangular pipe General round-to-square process Stable forming process
Round to square with turkshead Good pipe quality, reach same wall thickness with round pipe 
Process of directly forming into square shape One set of roller can produce all pipe sizes & realize electric control and automatic adjustment 
  
Model Round pipe
mm
Square pipe
mm
Thickness
mm
Working spead
m/min
ERW20 Ф8-Ф20 6x6-15x15 0.3-1.5 120
ERW32 Ф10-Ф32 10x10-25x25 0.5-2.0 120
ERW50 Ф20-Ф50 15x15-40x40 0.8-3.0 120
ERW76 Ф32-Ф76 25x25-60x60 1.2-4.0 120
ERW89 Ф42-Ф89 35x35-70x70 1.5-4.5 110
ERW114 Ф48-Ф114 40x40-90x90 1.5-4.5 65
ERW140 Ф60-Ф140 50x50-110x110 2.0-5.0 60
ERW165 Ф76-Ф165 60x60-130x130 2.0-6.0 50
ERW219 Ф89-Ф219 70x70-170x170 2.0-8.0 50
ERW273 Ф114-Ф273 90x90-210x210 3.0-10.0 45
ERW325 Ф140-Ф325 110x110-250x250 4.0-12.7 40
ERW377 Ф165-Ф377 130x130-280x280 4.0-14.0 35
ERW406 Ф219-Ф406 170x170-330x330 6.0-16.0 30
ERW508 Ф273-Ф508 210x210-400x400 6.0-18.0 25
ERW660 Ф325-Ф660 250x250-500x500 6.0-20.0 20
ERW720 Ф355-Ф720 300x300-600x600 6.0-22.0 20


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