High frequency high precision full automatic ERW Pipe mill line
This line is used to manufacture welded steel pipe of Φ32mm-Φ140mm
with 1.0mm-5.0mm of wall thickness, can produce Square pipe 25*25 -
After we absorbed advanced pipe making technology from both abroad
and domestic, our innovative designed production line and each
single unit of the production line is not only economical but also
This production line is used for producing High Frequency Induction
Welded (HFW) carbon steel tubes. The process involved is cold
forming of carbon steel strip in circular shape, longitudinal
welding, and sizing, converting into specified shape and cutting to
The electrical system use Siemens PLC automatic control system,
Eurotherm DC speed control system, digital display system etc.,
owing the special advantages of easy for operating, imply
maintenance and high reliability.
The complete line is divided in three sections:
1. Entry Section
2. Forming, Welding, Cooling and Sizing Section
3. Cutting and Delivery Section
Brief introduction of ERW tube mill & pipe mill
- The ERW tube mill & pipe mill is a series of machines that
builds longitudinal weld seam tubes and pipes with steel strips of
- It starts by uncoil and flatten the slitted steel coils into steel
- The flattened steel strips will then be inserted into the forming
machine and the roller tolling in the machine will roll the strip
to round pipe shape.
- The rolled strips will then be sent into the weld box where the
tube is welded by a high frequency solid state welder.
- The welded tubes will be formed to expected shape or size in a
sizing machine. Finally the tubes will be cut to length and
- High precision
between level roller jumps 0.01,between frame and slide clearance
≤0.02, frame vertical degree ≤0.05, each frame parallel degree
≤0.1,steel pipe diameter and roundness error≤0.08
- Use Japanese technology to make foreign clients requirment who need
the high accuracy requirement
- Schedulable use the worm gear and worm adjustment, the adjustment
precision is high, energy accurately
- The scraping scar can be adjusted 3D adjustment , scraper can along
the steel circle ±20 ° rotation.
- Round become square is Turkish head push square, can reduce mold
weight, forming stable, uniform R Angle.
- Level up shaft increase nylon damping block, reduce the impact to
the shaft and bearing.
Scroll up → Uncoil → Flattening → End Shear & Butt Welding →
Accumulator → Forming → High-frequency induction welding→ Removing
external burr → Cooling → Sizing → Cutting → Checking &
Collecting → Accessing Warehouse
1. Raw Material
|1||Mateairal applcaition||Hot or cold rolled steel strips, galvanzied steel strips|
|2||Material grade||Low-carbon steel, low alloy steel: δs≤345Mpa|
|3||ID of the steel strips||Φ508-Φ610mm|
|4||OD of the steel strips||Φ800-Φ2000mm|
2. Production Range:
|Round Pipe||32- 140mm||Thickness: 1.0-5.0mm|
|Square Pipe||25*25- 110*110mm||Thickness: 1.0-4.0mm|
|Rectangular Pipe||20*30 - 90*120mm||Thickness: 1.0-4.0mm|
3. H.F. Welder: GGP300Kw Solid State High Frequency Welder
4. Line Spees: Max.70m/min
5. Tube Length: 6-12m
6. Cutting Accuracy: ±3mm
7. Electric installed capacity: appro. 500KW
8. Size of whole line: about 80X9m
1.) We will send the engineer for the installation and training
your workers how to operate this machine in correct way.
2.) Warranty Team
One year quality guarantee, life guarantee repair. Within quality
guarantee period, except for failures caused by human error, repair
parts will be provided for free. After the quality guarantee
period, only charge the cost of the spare parts.
3.) We supply the pre-sell and after-sell service.
pre-sell service: workshop design, and production output design
after-sell service: installation and training, and the skilled
engineer for working.
4.) We can also sent the engineer working for you serval months or
1 year. The engineer will help you to improve the output, reduce
the waste and decrease the cost.
5.) We supply the pre-sell service-Design for whole project for
stainless steel pipe making/ carbon steel pipe making.
6.) We will be responsible for the loading and shipping