High Frequency ERW Tube Mill Line is an advanced steel pipe manufacturing solution designed for producing high-quality welded tubes with high efficiency and precision. The production line uses high-frequency electric resistance welding technology to join steel strips into strong longitudinally welded pipes. It can process carbon steel, galvanized steel, and other metal materials to manufacture round pipes, square pipes, rectangular tubes, oval tubes, and various customized profiles.
With excellent production speed, stable welding performance, and flexible pipe size adjustment, the ERW tube mill line is widely used in construction, automotive manufacturing, furniture production, agricultural equipment, energy transportation, and many other industries.
ERW Tube Mill Production Process and Applications
The complete ERW pipe making process integrates several working sections, including coil feeding, leveling, forming, high-frequency welding, sizing, cutting, and finished pipe collection.
The produced pipes feature smooth welding seams, accurate geometry, and strong mechanical performance. Depending on customer requirements, the line can manufacture pipes with different diameters, wall thicknesses, and shapes.
| Production Item | Description |
|---|---|
| Raw Material | Carbon steel coil, galvanized steel coil, stainless steel coil (optional) |
| Pipe Shape | Round, square, rectangular, oval, customized profiles |
| Welding Method | High-frequency electric resistance welding |
| Production Speed | Approx. 30-120 m/min (depending on model and pipe specification) |
| Control System | PLC + HMI automatic control |
| Main Applications | Construction, automotive, furniture, oil & gas, electrical conduit, shelving systems |
The finished tubes produced by the ERW tube mill line are commonly applied in structural steel projects, vehicle frames, street lighting poles, furniture frames, air-conditioning systems, refrigerator components, decorative pipes, electrical conduits, oil pipelines, and storage rack systems.
What Is a High Frequency ERW Tube Mill Line?
An ERW Tube Mill Line (Electric Resistance Welded Tube Mill) is a complete production system that converts steel coils into finished welded pipes through a continuous forming and welding process.
During production, the machine feeds the steel strip from the uncoiler, gradually forms it into a round shape through multiple forming stations, and then uses high-frequency current to heat and weld the edges together. After welding, the tube passes through sizing stands to achieve accurate dimensions before cutting into required lengths.
Compared with traditional pipe manufacturing methods, the ERW process provides higher production efficiency, lower material consumption, and better dimensional accuracy. It is especially suitable for industries requiring large quantities of reliable steel pipes.
ERW Tube Mill Production Process Flow
The High Frequency ERW Tube Mill Line completes the entire pipe manufacturing process through a continuous and automated production flow. From raw steel coil feeding to finished pipe collection, each stage is precisely controlled to ensure stable quality, high production efficiency, and excellent welding performance.
Production Flow:
Steel Coil Loading → Uncoiling → Strip Leveling → Shearing & End Welding → Accumulator Storage → Strip Forming → High Frequency Welding → Weld Bead Removal → Sizing & Straightening → Cutting → Finished Pipe Collection
Detailed Production Steps:
1. Steel Coil Loading & Uncoiling
The steel coil is installed on the hydraulic uncoiler, which provides continuous and stable material feeding for the production line.
2. Strip Leveling and Preparation
The leveling system removes coil deformation and ensures the steel strip enters the forming section smoothly with consistent flatness.
3. Strip Accumulation
The accumulator stores sufficient strip material, allowing continuous production during coil replacement and reducing machine downtime.
4. Tube Forming Process
Multiple forming rollers gradually bend the steel strip into the required round pipe shape. The precision-designed rollers ensure accurate forming and reduce material stress.
5. High Frequency Welding
The edges of the formed steel strip are heated by high-frequency current and pressed together to create a strong longitudinal weld seam.
6. Sizing and Straightening
After welding, the pipe passes through sizing rollers to achieve accurate diameter, shape, and straightness.
7. Automatic Cutting and Collection
The finished pipes are cut into preset lengths by an automatic cutting system and transferred to the collection table for further processing or packaging.
Advanced Features of ZTRFM ERW Tube Mill Machine
ZTRFM’s high frequency ERW tube mill line combines mechanical precision, electrical control technology, and automation systems to improve production efficiency and product quality.
The forming section uses accurately machined rollers to ensure stable strip forming. The high-frequency welding system provides fast and uniform heating, creating strong and reliable weld seams. Meanwhile, the PLC control system allows operators to monitor and adjust production parameters conveniently.
For different pipe sizes, customers can choose suitable configurations according to their production requirements. The machine can also be customized with automatic packing systems, advanced cutting units, and other auxiliary equipment.
The main advantages include:
- High-speed continuous pipe production with stable operation.
- Accurate pipe dimensions and excellent welding quality.
- Lower raw material waste during manufacturing.
- Flexible production of round, square, and rectangular tubes.
- Automatic control through PLC and touch-screen operation.
- Customized solutions based on pipe specifications and production capacity.
- One set of guide roll stand for controlling direction of pipe seam to insure pipe seam straightly entering into extruding rollers. One set of extruding roll stand for controlling weld seam to realize successful welding. Two sets of scraper frame for scraping outside weld seam
- PRODUCE CAPACITY
| NO. | (ITEM) | (WORKING RANGE） | REMARK |
| 1 | Outer diameter. | Φ25mm～Φ63.5mm | |
| 2 | Pipe thickness. | Δ1.0mm～4.5mm | |
| 3 | Square tube size | 20×20mm～50×50mm | |
| 4 | Square tube thickness | Δ1.0mm～3.0mm | |
| 5 | Rectangular pipe size | 20*30mm～40×60mm | |
| 6 | Rectangular pipe thickness | Δ1.0mm～3.0mm | |
| 7 | Produce speed | 20M/min～60M/min | |
| 8 | Pipe length | 4M～7M |
- STEEL STRIPS SPECIFICATION
| NO. | (ITEM) | (WORKING RANGE) | REMARK |
| 1 | Thickness of strips | Δ1.0～4.5mm | Material: low-carbon steel, low alloy steel strip(δs ≤ 980MPa, δb ≤ 345MPa) |
| 2 | Width of strips | 80～200mm | |
| 3 | O.D. of steel coil | Φ800mm～Φ1700mm | |
| 4 | I..D. of steel coil | Φ450mm～Φ550mm | |
| 5 | Maxi. Load weight | ≤5000kgs |
Frequently Asked Questions About ERW Tube Mill Line
1. What types of pipes can an ERW tube mill produce?
The ERW tube mill can produce round pipes, square tubes, rectangular tubes, oval pipes, and other customized welded profiles. The machine can process carbon steel, galvanized steel, and other suitable metal materials.
2. What is the production speed of an ERW tube mill line?
The production speed depends on pipe diameter, wall thickness, material type, and machine configuration. Generally, the speed can reach approximately 30-120 meters per minute.
3. Can the ERW tube mill be customized?
Yes. ZTRFM provides customized solutions according to customers’ requirements, including pipe dimensions, production capacity, cutting methods, automation level, and auxiliary equipment.
4. What after-sales service does ZTRFM provide?
ZTRFM offers complete technical support, including machine installation guidance, commissioning, operator training, maintenance advice, spare parts supply, and online or onsite technical assistance.
5. What warranty does the ERW tube mill include?
ZTRFM provides warranty support according to the equipment contract, covering manufacturing-related issues and offering professional technical assistance throughout the machine’s service life.
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