Large Scale Welded Pipe Mill Nondestructive Testing Spiral Pipe Mill
Brand Name:Duolek
Model Number:DRC-LXHGJ
Minimum Order Quantity:1 set
Delivery Time:45-75 working days
Payment Terms:L/C,T/T
Place of Origin:Qingdao, China
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Qingdao China
Address:
North of Zhuzhu Road, Puji Town, Jiaozhou City, Qingdao, China
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Product Details
Price Advantage Spiral Weld Pipe Mill Nondestructive Testing Large Scale Production
The spiral welded pipe unit is a standard finalized unit developed
and improved by Duolek Heavy Industries on the basis of absorbing
the essence of foreign forming process technologies and combining
with the actual domestic situation. It is a mature unit with the
most competitiveness and technical characteristics of Duolek Heavy
Industries.
▶ The production process of the spiral welded pipe unit:
The raw materials are strip steel coils, welding wires, and welding
fluxes. All of them must pass strict physical and chemical
inspections before being put into use.
The head and tail of the strip steel are butt-welded. Single or double wire submerged arc welding is adopted, and after being rolled into a steel pipe, automatic submerged arc welding is used for repairing welding.
Before forming, the strip steel goes through processes such as leveling, edge trimming, edge planing, surface cleaning, conveying, and pre-bending.
An electric contact pressure gauge is used to control the pressure of the oil cylinders on both sides of the conveyor to ensure the stable conveying of the strip steel.
Externally controlled or internally controlled roller-type forming is adopted.
A weld seam gap control device is used to ensure that the weld seam gap meets the welding requirements. The pipe diameter, mismatch amount, and weld seam gap are all strictly controlled.
Both internal and external welding adopt single-wire or double-wire submerged arc welding with Lincoln welding machines from the United States, thus achieving stable welding quality.
An air plasma cutting machine is used to cut the steel pipe into single pieces.
Each batch of steel pipes must undergo a strict inspection system, checking the mechanical properties of the weld seam, chemical composition, fusion condition, surface quality of the steel pipe, and passing non-destructive flaw detection inspection. Only after ensuring that the pipe manufacturing process is qualified can formal production be carried out.
The head and tail of the strip steel are butt-welded. Single or double wire submerged arc welding is adopted, and after being rolled into a steel pipe, automatic submerged arc welding is used for repairing welding.
Before forming, the strip steel goes through processes such as leveling, edge trimming, edge planing, surface cleaning, conveying, and pre-bending.
An electric contact pressure gauge is used to control the pressure of the oil cylinders on both sides of the conveyor to ensure the stable conveying of the strip steel.
Externally controlled or internally controlled roller-type forming is adopted.
A weld seam gap control device is used to ensure that the weld seam gap meets the welding requirements. The pipe diameter, mismatch amount, and weld seam gap are all strictly controlled.
Both internal and external welding adopt single-wire or double-wire submerged arc welding with Lincoln welding machines from the United States, thus achieving stable welding quality.
An air plasma cutting machine is used to cut the steel pipe into single pieces.
Each batch of steel pipes must undergo a strict inspection system, checking the mechanical properties of the weld seam, chemical composition, fusion condition, surface quality of the steel pipe, and passing non-destructive flaw detection inspection. Only after ensuring that the pipe manufacturing process is qualified can formal production be carried out.
▶ Fully automatic steel pipe hydraulic pressure testing machine
The hydraulic pressure testing machine is mainly used for conducting pressure tests on welded pipes, and it has the functions of computer recording, storing, printing, and presenting test results. It has the advantages of high efficiency, high test pressure, and strong safety. The pipe diameter range is Φ20-Φ3500mm, and the test pressure is 10-110MPa.
Process flow: Loading the pipe — Connecting the pipe — Filling with water — Pressurizing — Maintaining the pressure — Releasing the pressure — Draining water — Unloading the pipe.
The hydraulic pressure testing machine is mainly used for conducting pressure tests on welded pipes, and it has the functions of computer recording, storing, printing, and presenting test results. It has the advantages of high efficiency, high test pressure, and strong safety. The pipe diameter range is Φ20-Φ3500mm, and the test pressure is 10-110MPa.
Process flow: Loading the pipe — Connecting the pipe — Filling with water — Pressurizing — Maintaining the pressure — Releasing the pressure — Draining water — Unloading the pipe.
▶ Fully automatic pipe end facing and beveling machine
The pipe end facing and beveling machine is mainly used for facing the pipe ends of welded pipes and processing the bevels. It is equipped with a profiling beveling cutter, and the processed bevels are uniform and beautiful. The processing range of the pipe end facing and beveling machines provided by our company for steel pipe manufacturing enterprises covers a steel pipe diameter of φ20mm-φ3500mm, and at the same time meets standards such as API-5L, API-5CT, BS1387-85, ASTM, and GB9711.
Process flow: Loading the pipe — Connecting the pipe — Clamping — Facing and beveling the pipe end — Releasing the fixture — Unloading the pipe.
The pipe end facing and beveling machine is mainly used for facing the pipe ends of welded pipes and processing the bevels. It is equipped with a profiling beveling cutter, and the processed bevels are uniform and beautiful. The processing range of the pipe end facing and beveling machines provided by our company for steel pipe manufacturing enterprises covers a steel pipe diameter of φ20mm-φ3500mm, and at the same time meets standards such as API-5L, API-5CT, BS1387-85, ASTM, and GB9711.
Process flow: Loading the pipe — Connecting the pipe — Clamping — Facing and beveling the pipe end — Releasing the fixture — Unloading the pipe.
▶ Ultrasonic flaw detector:
It will automatically alarm and spray marks for defects, and workers will adjust the parameters accordingly;
The parts of the weld seam with continuous ultrasonic flaw detection marks will be rechecked by manual ultrasonic and X-ray inspection;
For the repaired defects, they will be subject to non-destructive inspection again until it is confirmed that the defects have been eliminated;
It will automatically alarm and spray marks for defects, and workers will adjust the parameters accordingly;
The parts of the weld seam with continuous ultrasonic flaw detection marks will be rechecked by manual ultrasonic and X-ray inspection;
For the repaired defects, they will be subject to non-destructive inspection again until it is confirmed that the defects have been eliminated;
▶ X-ray steel pipe inspection:
This inspection system is seamlessly connected to the entire production line and meets the control and management process requirements of steel pipe manufacturers. The automatic weld seam recognition technology facilitates the automatic control in the inspection preparation stage; it has a database, and the inspection parameters of the same product can be automatically loaded with one-click calling; the entire system has a high degree of automation for operation and inspection and has an extremely high market share in domestic steel pipe production lines.
This inspection system is seamlessly connected to the entire production line and meets the control and management process requirements of steel pipe manufacturers. The automatic weld seam recognition technology facilitates the automatic control in the inspection preparation stage; it has a database, and the inspection parameters of the same product can be automatically loaded with one-click calling; the entire system has a high degree of automation for operation and inspection and has an extremely high market share in domestic steel pipe production lines.
▶ Applications of the spiral welded pipe unit:
With its efficient forming process and flexible adaptability, the spiral welded pipe unit is widely used in high and low-pressure fluid conveying pipes, pile pipes for urban construction, pipes for industrial structures, power/thermal/gas pipelines, etc., providing efficient and high-quality pipeline solutions.
With its efficient forming process and flexible adaptability, the spiral welded pipe unit is widely used in high and low-pressure fluid conveying pipes, pile pipes for urban construction, pipes for industrial structures, power/thermal/gas pipelines, etc., providing efficient and high-quality pipeline solutions.
Model | Specification(mm) | Coil weight (ton) | Coil width(mm) | Thickness(mm) | Capacity(KW) | Area(m2) |
DRC-400 | φ219-φ426 | 10 | 400-750 | 5-8 | 150 | 18*72 |
DRC-500 | φ219-φ529 φ219-φ720 | 15 | 400-800 | 5-10 | 180 | 18*72 |
DRC-600 | φ219-φ630 | 15 | 450-1050 | 6-10 | 190 | 21*72 |
DRC-700 | φ219-φ720 | 15 | 500-1250 | 5-12.7 | 210 | 21*72 |
DRC-800 | φ219-φ820 | 20 | 500-1300 | 6-12.7 | 220 | 24*78 |
DRC-1000 | φ219-φ1020 | 20 | 500-1560 | 6-12.7 | 220 | 24*78 |
DRC-1400 | Φ325-φ1420 | 25 | 500-1560 | 6-18 | 400 | 24*120 |
DRC-1600 | Φ426-φ1620 | 30 | 1100-1600 | 6-20 | 400 | 24*120 |
DRC-1800 | φ508-φ1820 | 30 | 1200-1600 | 8-25.4 | 500 | 24*180 |
DRC-2000 | φ508-φ2020 | 30 | 1200-2000 | 8-25.4 | 550 | 24*180 |
DRC-2400 | φ508-φ2400 | 30 | 1200-2000 | 8-25.4 | 600 | 24*200 |
DRC-3000 | φ508-φ3000 | 30 | 1200-2000 | 8-25.4 | 700 | 24*200 |
▶ Spiral Weld Pipe Mill Application Scope:
▶ Why choose us?
- Export Experience (Global Trade)
Since its establishment in 2002, Condor Heavy Industries has successfully operated its equipment in more than 20 countries and has dealers involved.According to Chinese export customs data, Duolek's related equipment ranks among the top ten in the industry, which means reliable quality and price.
- Customize on demand
With 21 years of manufacturing and export experience, Duolek supports the design and customization of equipment on demand, provides equipment configuration details and parameter guidance, and guarantees subsequent production quality and equipment adjustment. Here, you can get professional advice for your needs.
▶ Customer factory inspection communication:
▶ Our Clients Say
▶ Duolek Factory Common inquiry
Q:What information we need customers to provide?
A:Duolek has R&D Center to focus on the study for new product. We can design and make the change as customer’s requirements. We keep an opened mind to service our customers.
Q:What’s your quality control system?
A:We operate ISO9001 Quality Management System. We control our products quality by our workshop processes: Materials incoming inspection, Machining process control, finished testing and Inspection before packing. Each step has inspector and the testing results will be recorded for checking.
Q:What kind of payment terms do you accept?
A:We prefer T/T through bank. 30% when order is confirmed and 70% before shipment. L/C is also acceptable for amount over 200,000USD.
Q:What is your warranty policy?
A:All our products are warranted for one full year from date of delivery against defects in materials and workmanship.This warranty does not cover parts that are worn out through the course of normal operation
Large Scale Welded Pipe Mill Nondestructive Testing Spiral Pipe Mill
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