ERW Steel Pipe Making Machine With Straight Seam High Frequency Welding

ERW welded pipes can be used in structural assemble, liquid transmission, furniture, construction fields. The pipe forming and size rectifying is the core unit of pipe mill line, with high frequency welding blank pipe seams between forming and sizing.
Our welded pipe production line can run fast and smoothly up to 150m/min for less 2”(50mm) pipes making, and over 100m/min for 2-4 inch(50-100mm) pipes.
Meanwhile, the ERW pipe diameter is going to huge, like 500mm round pipes(400x400 square ), this require pipe forming and sizing design to save rollers, otherwise, rolling tools cost will be very high. The automatic mechanical adjust rollers to change pipe sizes are very important, for manual way is becoming too difficult.

When customers mainly or only need square or rectangular welded pipes, we adopt “directly to square” forming technology, one set of combined forming rollers can make all the square and rectangular tubes, convenient, efficient and economical.
Besides forming and sizing units, the other equipments on pipe production line are uncoiler, shear and butt welder, accumulator, high frequency welder, flying saw, roll table and auto packer.

The continuous pipe making process: uncoiling, cutting and joint welding, accumulating, (blank pipe forming, seam guide, high frequency induction welding, seam squeeze, out burrs scraping, polishing, cooling, sizing and turks head straightening), flying cut, roll table packing.

Description of critical equipment on ERW pipe mill line:
1.Uncoiler: manual or pneumatic expansion 180 degree double mandrels for 2T coil
Hydraulic expansion 180 degree double mandrels for 3.5T coil
Hydraulic expansion one mandrel for 4-8T
Hydraulic double mandrels opposite to each other for 10-30T
2.Accumulator loop: cage accumulator for ≤3x150mm steel strip
Horizontal spiral accumulator is for all cases of strip accumulating
3.Pipe forming and sizing machine:

4.Fly cutting Saw: in general applications, hot friction chopping style flying saw is enough, recent years cold cutting saw is becoming more and more popular for the cut pipe ends are smooth without burrs. Both flying saws are mature technology.
5.Discharging roll table and automatic packing
Customers can choose: either each pipe runs on roll table and then fall into pipe collecting frame, or pipes run and go to packing table where pipes are automatically packed into hexagon bundle.

Configuration of pipe mill electric system

• 1.Pipe forming and sizing by DC motor controlled by Parker DC driver
• 2.High frequency welding equipment is made in Baoding
• 3.Flying saw control system is Contor
• 4.One operator console for uncoiler and accumulator

We are metal coil sheet processing machine manufacturer and supplier, we dedicate to supply of good quality machines and provision of complete services.

We work in the coil processing machine field for over 20years, we design and make each machine customized. From machine parts materials selection, each part machining and treatment, whole machine assembly and surface painting, we carefully note each detail of whole production process to achieve good quality machine result.

Rich Experiences:

Our people witness the developing process of sheet processing machines and develop ourselves with market, thus able to supply customers good machines at competitive prices.

Efficient Responses:

Investment of metallurgical equipment is a system engineering, which requires comprehensive plan and successive execution. The efficient responses of the equipment suppliers are very important. We did well in this and cooperate with customers for long time.

Senses of Mission:

Nothing proceeds smoothly without any problem, the important is to face and solve the problem. We put problem solution in priority, never escape responsibilities. Supply of good machines creating profit for customers is our mission, the most profitable equipment is the best. Customer is the King, we must provide him the most suitable machine to return his trust.

After-sale Services:

We can send engineers to customer plant to do machine installation and commissioning; we provide hydraulic schematic drawing, electric principle diagrams, mechanic spare parts drawings, civil works drawing; We always listen and give consultation.

Welcome to inquire us! welcome to visit our plants!