Conventional Round-to-Square ERW Pipe Mill

ERW (Electric Resistance Weld) Tube Mill is also called High-Frequency Longitudinal Welded Pipe Production Line. Suitable materials are hot-rolled or cold-rolled strip coils such as plain carbon steel and high-strength steel, etc.  

Products Details

High Efficiency

Line speed can be up to 120m/min.

Low Wastage

Low unit wastage and low production cost.

High Accuracy

Diameter error is only 0.5/100 of the pipe OD.


Our Company

Shijiazhuang Zhongtai Pipe Technology Development Co., Ltd.was established in 2000 locating in Shijiazhuang, the capital city of Hebei Province. The factory covers an area of 67,000 square meters. Our main products consist high frequency straight welded pipe production line, cold roll steel production line, multi-function cold roll steel/welded pipe production line, slitting line production line, stainless steel pipe mill, various pipe mill auxiliary equipment and rollers, etc.
Lean more...This production line is a comprehensive complete production line for continuous welding of steel strips into pipes, the strip steel is unrolled by the uncoiler, and then enters the accumulator storage after passing through the shear butt welding machine. The strip steel is extruded by rollers and divided into two parts: break-down section and fine pass section. After high-frequency induction welding and sizing part, output the required length of pipe, cut off by flying saw, and finally stack and pack the steel pipe.Steel pipe manufacturing process

Scrolling Up→ Uncoiling → Shear and Welding→ Accumulator→ Forming→ HF induction Welding→ External Burr Removing→ Cooling → Sizing→ Flying Saw → Run Out Table →Inspecting→ Packing→ Warehouse

Product Information

Our Certificate

Product Application

Specialized in pipe production line

More than 23 years...

High Frequency (HF) longitudinal welded pipe production line / pipe making machine / tube mill is designed to produce welded pipes of 8mm to 89mm in OD and with a maximum wall thickness of 4.5mm, as well as corresponding square and rectangular pipe.

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Round Pipe


Square Pipe


Rectangular Tube


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