Large Diameter a P I Spiral Welded Pipe Mill

Product Description

Large Diameter A P I Spiral Welded Pipe Mill

The steel coils are unfolded and leveled by the mill equipment. And they are sent to the forming machine in a certain angle. Supplemented by a certain angle, the continual pipes are formed in the principle of three-roll rolling machine. Continual spiral welding is welded by submerged-arc welding machine. The uncoiling, coil detaching, leveling, steel cutting and welding are working on the fly-welding carriage. When the steel is welded, the fly welding carriage moves forward in the same speed with the host equipments. The host machine will not have the stop. After the steel welding finishing, fly welding carriage backs forward to the original position t wait another coil. This mode is called continuous production method with high efficiency, high pipe quality, rare welding repair and other advantages.

According to the different function of our products, the back swing spiral welded pipe mills are divides in to A P I model and standard model. A P I model mainly produces the delivery pipe with petroleum or natural gas (long distance), the material and quality of the steel pipe need to be very good. The requirements for mill equipment and testing equipment also are very high. The standard model produces the pipe used for short distance delivery of natural gas or water, the pipeline construction in the city, the structure pipe, column pipe and so on. The requirements for the material and quality of the steel also are very high.

Model:

No.	Model	OD (mm)	Coil Width (mm)	Thickness (mm)	Capacity (kw)	Area (M^2)
1	HNHLX - 820	Φ219 - Φ820	350 - 1300	3 - 14	500	30×400
2	HNHLX -1020	Φ273 - Φ1020	350 - 1300	3 - 16	800	30×400
3	HNHLX -1420	Φ325 - Φ1420	500 - 1600	3 - 18	1000	30×400
4	HNHLX -1620	Φ426 - Φ1620	500 - 1600	4 - 25.4	1500	30×400
5	HNHLX -1820	Φ508 - Φ1820	500 - 2000	4 - 25.4	1500	30×400
6	HNHLX -2020	Φ508 - Φ2020	500 - 2000	4 - 25.4	1500	30×400
7	HNHLX -2400	Φ508 - Φ2400	500 - 2000	4 - 25.4	1800	30×400
8	HNHLX -3000	Φ610 - Φ3000	500 - 2000	4 - 25.4	1800	30×400
9	HNHLX -3500	Φ720 - Φ3500	600 - 2000	4 - 25.4	2000	30×400

Process:
Loading Coil - Uncoiling - Leveling - Cutting and Coil Welding - Edge Milling Machine - Feeding Machine - Flying Welder - Delivering Machine - Pre-Bending and Guide Board - Forming Machine - Internal Welding - External Welding - Tracking and Cutting Off - Pipe Delivery - Welding Seam Grinding - Pipe End Expander - X-Ray Inspection - Hydro Testing - Pipe End Charming - Ultrasonic Inspection - Weighting, Measuring, Marking - Finished Products Collection


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.