X Ray Detection Spiral Welded Pipe Mill High Frequency Pipe Rolling Mill

X - Ray Detection Spiral Weld Pipe Mill High - Frequency Welding Low Defect Rate

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.
• 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.
• 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.

▶ 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

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.