High Output Spiral Weld Pipe Mill Straight Seam Welded Pipe Production Fast Speed

The straight seam welded pipe unit produced by Duolek is a mature industrial pipe manufacturing equipment, relying on years of technological accumulation and process optimization, with stable and reliable performance advantages.
▶ High frequency straight seam welded pipe unit
The unit adopts an internationally advanced forming system, which has a series of advantages such as stable forming, good surface quality of steel pipes, convenient specification changes, advanced technology, reliable equipment, complete process and mature production.
Production material: The widest 1500mm strip steel is used as the production material, with low strip steel content.
Forming process: Using a cold forming process with multiple rollers, the two ends of the strip steel are compressed and aligned with each other. The advantage is that the forming method is uninterrupted and continuously fastened

▶ Submerged arc straight seam welded pipe unit
This unit is a specialized equipment for producing straight seam welded pipes in industries such as metallurgy, petroleum, and construction. By adopting mature and reliable advanced processes and equipment, we ensure that product quality, cost, and various consumption indicators reach advanced levels, and have strong competitiveness in terms of quality and price.
Production materials: The narrowest 1250mm is used to produce coils, medium plates, and medium thick plates.
Forming process: JCOE cold stamping forming, which is characterized by gradually forming sheet metal in units of 50mm.

▶ Fully automatic steel pipe hydrostatic testing machine
The Duolek fully automatic steel pipe hydrostatic testing machine is the main inspection equipment for welded pipe production. It adopts PLC control, and each part of the work process is automatically completed in sequence, with the function of automatic recording of test result parameters.

▶ Fully Automatic Pipe Hydrostatic Tester

As a primary inspection equipment for welded pipe production, Duolek's hydrostatic tester features PLC control for automated sequential testing procedures and automatic recording of test parameters.

▶ Fully Automatic Pipe End Facing and Chamfering Machine

This auxiliary equipment processes pipe end bevels and flattens pipe ends for field welding compatibility. Pipe diameter range: φ20mm-φ3500mm

▶ Ultrasonic Flaw Detector

Automatically alarms and marks defects for parameter adjustment Weld sections with continuous ultrasonic inspection marks undergo manual UT and X-ray re-inspection Defect repairs require repeated NDT until complete elimination

▶ X-Ray Inspection

Duolek Heavy Industry's X-ray equipment detects hidden weld spots in various welded pipes while intelligently analyzing results, providing effective quality assurance for achieving "first-pass qualification" and "zero-defect" targets.

▶Customization Service Offered:

Our equipment is tailored to meet each customer’s unique requirements. We take into full account your specific production needs, along with the layout and dimensions of your existing production site. This ensures that the final product not only functions optimally but also integrates perfectly into your workspace, enhancing overall productivity and operational efficiency.

▶Complete service guarantee:

Enterprises strictly control every link of equipment research and development and production, and are equipped with comprehensive pre-sales, in sales, and after-sales services, so that users have no worries during the use of equipment.

▶ Size range divided by purpose

▶ Straight Seam Welded Pipe Unit 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

Shandong Duolek Heavy Machinery Co., LTD., located in Puji Industrial Park, Jiaozhou, Qingdao, Shandong Province. We are a large-scale heavy industry machinery manufacturing enterprise in China. The company is mainly engaged in the design, manufacturing, and installation of large-scale equipment such as heavy industry machinery, ring rolling machines, steel spiral welded pipe machines, mining machinery, etc. Its products cover multiple series such as self unloading, construction, sanitation, logistics, mining machinery, as well as key assembly components.

The company adheres to high-quality development, and after years of development and accumulation, through independent innovation and introduction of technology digestion, absorption, and re innovation, it has a deep technological foundation and strong development and manufacturing capabilities. The production workshop covers an area of over 20000 square meters. With advanced production lines, strong design, research and production capabilities, stable and high-quality products, and a comprehensive after-sales service system, Duolek Heavy Machinery Co., LTD. has won the market and gained recognition and praise from customers.

Taking technology as the guide and winning the market with quality is the unremitting pursuit of Duolek Heavy Industry.