Audited Supplier
Pre-Finish Welding Spiral Pipe Mill Tube Mill
Pre finish welding spiral welded pipe mill is to let the forming and welding separate to the two processes. The forming machine adopts high-speed forming. Compared with the normal spiral welded pipe mill, the forming of pre-welding & precise welding spiral welded pipe mill does not weld completely. It only uses the CO2 protective welding to have the pre-welding on the steel joint part. It will be ok only let the steel joint part to be not open. Then, the pipe will be sized and cut off. After the pipe is sent out the line, the pipe will be delivered to the precise welding machine to have the detailed welding on the internal & external welding seam.
This kind of forming technology has many advantages. Firstly, the forming and welding are separated. Then, the effect from forming process will be eliminated during the precise forming. The welding seam quality can be guaranteed more. Secondly, the production efficiency is the four times of the one in normal spiral line due to adopting the high-speed forming machine (the speed can reach to 8m/min). The precise welding machine has four sets. Then, the one combined mill production capacity can be three or four times of the normal one. This kind of mill is suitable for large pipe plant with good quality and high efficiency. This mill is mainly used for manufacturing the oil, gas (long distance) delivery pipe, which has the high requirement on the material and quality, the same as the equipment and testing equipment.
Models:
| No. | Model | OD (mm) | Coil Width (mm) | Thickness (mm) | Area (M2) |
| 1 | HNYLX -1420 | Φ630~Φ1420 | 600~2000 | 4~25.4 | 30×600 |
| 2 | HNYLX -1620 | Φ630~Φ1620 | 600~2000 | 4~25.4 | 30×600 |
| 3 | HNYLX -1820 | Φ630~Φ1820 | 600~2000 | 4~25.4 | 30×600 |
| 4 | HNYLX -2020 | Φ720~Φ2020 | 600~2000 | 4~25.4 | 30×600 |
| 5 | HNYLX -2400 | Φ720~Φ2400 | 600~2000 | 4~25.4 | 30×600 |
| 6 | HNYLX -3000 | Φ720~Φ3000 | 600~2000 | 4~25.4 | 30×600 |
| 7 | HNYLX -3500 | Φ720~Φ3500 | 600~2000 | 4~25.4 | 30×600 |
Process:
Loading Coil→Uncoiling→Leveling→Cutting And Coil Welding →Edge Milling Machine→Feeding Machine→ Pre-bending And Guide Board→Forming → Pre-Welding→Cutting Off→Pipe Delivery Out→Deliver The Pipe To The Precise Welding Machine(4 Lines Working Together)→Pipe Loading→Finding The Welding Position→Pipe Rotating And Internal & External Welding At The Same Time(Welding Seam Tracking)→Pipe Exit→Welding Seam Grinding→X-Ray Inspection→Pipe End Expander→Hydro Tester→UT Continuous Detection(Pipe Welding Seam And Steel)→Pipe End Facing And Beveling →Pipe End Take Photo→Weighting, Measuring , Marking→ Finished Product Collection
1. We use steel wire and wooden frame to fix the pipe mill.
2. In addition, used shockproof film to protect the main motors.
3. We use containers for shipping.
4. Generally speaking, we start at Tianjin sea port, but we also can start at other port according to customers need.
Our Factory
Our Customer
1. Provide customers with a reasonable investment plan, filter the appropriate models recommended to customers.
2. Free equipment drawings, customer plant equipment planning drawings.
3. Provide the base map required for installation free of charge.
4. Provide equipment installation and commissioning until the buyer operates normally.
5. Provide professional technical training, as soon as possible to allow the buyer's operator to master the operation and use of the equipment.
6. Provide and coordinate auxiliary equipment, accessories, and consumables.
7. The warranty period is one year, except man-damage. If you have any question in operation in operating the machines, you can call us or send emails, we will solve the problem for you asap.
