Pre-Finish Welding Spiral Welded Pipe Mill

• After-sales Service: Lifetime Warranty
• Warranty: 12 Months
• Pipe Material: Carbon Steel
• Condition: New
• Customized: Customized
• Theory: Inverter
• Model NO.: HNLX
• Application: Industry
• Type: Spiral Steel Pipe
• Od: 630mm-3500mm
• Coil Width: 600mm-2000mm
• Thickness: 4mm-25.4mm
• Speed: 8m/Min
• Transport Package: Container
• Specification: 630mm-3500mm
• Trademark: HNGK
• Origin: China
• HS Code: 8515219100
• Production Capacity: 5 Sets

Product Description

Pre-Finish Welding Spiral Welded Pipe 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-finish 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. 

Model:

No.	Model	OD (mm)	Coil Width (mm)	Thickness (mm)	Capacity (kw)	Area (M^2)
1	HNYLX -1420	Φ630 - Φ1420	600 - 2000	4 - 25.4	3000	30×600
2	HNYLX -1620	Φ630 - Φ1620	600 - 2000	4 - 25.4	3500	30×600
3	HNYLX -1820	Φ630 - Φ1820	600 - 2000	4 - 25.4	3500	30×600
4	HNYLX -2020	Φ720 - Φ2020	600 - 2000	4 - 25.4	3500	30×600
5	HNYLX -2400	Φ720 - Φ2400	600 - 2000	4 - 25.4	3800	30×600
6	HNYLX -3000	Φ720 - Φ3000	600 - 2000	4 - 25.4	3800	30×600
7	HNYLX -3500	Φ720 - Φ3500	600 - 2000	4 - 25.4	4000	30×600

  
Process:  
Loading Coil → Uncoiling → Leveling → Shear Butt Welding → Edge Milling → Feeding→ Pre-Bending and Guiding → Forming → Pre-Welding → Cutting → Pipe Delivering →Precise Welding → Pipe Loading → Finding The Welding Position → Pipe Rotating And Internal & External Welding → Pipe Exiting → Welding Seam Grinding → X-Ray Inspecting → Pipe End Expanding → Hydro Testing → UT Continuous Detecting → Pipe End Facing And Beveling → Weighting, Measuring , Marking → Finished Product Collecting


Packing & Shipping
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


Integrated Services
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.