The large round tube mill series of Zhongtai Company are mainly designed and developed to meet the demand of customers for producing architectural structure tubes (Q235 material) less than 20mm, oil delivery tubes and other products.
Features of the series equipment: high precision, high roll-exchange speed, die saving. According to the strip steel material and the mechanical properties, the tube is designed to proper hole-pattern type, to minimize the scratches by the roll on the strip steel surface and reasonably allocate the drive speed ratio, reduce the wear of the drive inside the unit, and save electricity.
Process of the series equipment: second generation, third generation and fourth generation of ZTF forming process

I.Brief introduction

ERW377high frequency longitudinal welded pipe production line / pipe making machine / tube forming machine is designed to produce welded pipes of 165mm-377mm in OD and 4.0mm-14.0mm in wall thickness.

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: 165mm-377mm Thickness: 4.0mm-14.0mm

Square & rectangle tube: 130mmx130mm-280mm×280mm, Thickness: 4.0mm-13.0mm

Length: 6 -12m Length Tolerance: ±3mm

2.Raw Material:

Material: Carbon steel coil

Width: 360mm-1120mm Thickness: 4.0mm-14.0mm

Coil ID:580-760mm

Coil OD: Max 2100mm

Coil Weight: 25t

3. Tube mill

Production Speed : 35 m/min

Production capacity: 120,000ton/year

Direction : left or right decided by customers.

Mill installed capacity : 580 kw

Line Area : 145m(length) ×13m (width)

Tube Bottom Passline (Above floor level) : 950 mm

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