I.Brief introduction

ERW325high frequency longitudinal welded pipe production line / pipe making machine / tube forming machine is designed to produce welded pipes of 140mm-325mm in OD and 4.0mm-12.7mm in wall thickness, as well as corresponding square and rectangle tube.

The plain technical flow of the production line

Uncoiling→ Shear & butt welding→ Accumulator→ Forming → HF welding→ Removing outsaide burr → Cooling(air & water)→ Sizing→ Cutting off(flying saw)→ inspection → Packing → Warehousing

II. Basic Technical Information:

1.Specification of pipes

Pipe OD: 140mm-325mm                  Thickness: 4.0mm-12.7mm

Square & rectangle tube: 90mm×90mm – 250mm×250mm, Thickness: 4.0mm-12.0mm

Length: 6 -12m                            Length Tolerance: ±3mm

2.Raw Material:

Material:  Carbon steel coil  Q235B(ASTM GR·D,σs 230)

Width: 360mm-1025mm                  Thickness: 4.0mm-12.7mm

Coil ID:610-700mm

Coil OD: Max 2000mm

Coil Weight: 15t

3. Tube mill

Production Speed : 40m/min

Production capacity: 55,000 ton/year

Direction : left or right decided by customers.

Mill installed capacity : 430 kw

Line Area : 130m(length) ×11m (width)

Tube Bottom Passline (Above floor level) : 950 mm