Oil and gas pipelines Straight Seam Welded Pipe Unit Molding stability Good weld quality

The Duolek straight seam welded pipe unit is a technologically mature industrial pipe manufacturing equipment, serving the market with stable and reliable performance through years of technological accumulation and process optimization. It mainly covers the following two advanced models:

1. High frequency straight seam welded pipe unit
This unit is the preferred choice for producing efficient and high-quality steel pipes. It adopts an internationally advanced forming system, which has the advantages of stable forming, good surface quality of steel pipes, and convenient specification changes. The unit uses low-carbon steel strip with a maximum width of 1500mm as raw material, and achieves uninterrupted continuous and efficient production through multi roller continuous cold forming and high-frequency current self melting fastening technology.
2. Submerged arc straight seam welded pipe unit
This unit is a specialized equipment for producing high-performance straight seam welded pipes in industries such as metallurgy, petroleum, and construction. It adopts mature JCOE cold stamping and other advanced processes, using the narrowest 1250mm coils, medium plates, and medium thick plates as raw materials. By using packing fastening methods, we ensure that product quality, cost, and various consumption indicators reach advanced levels, and have strong competitiveness in the market.

Application scope:
This production line is a specialized equipment for producing straight seam welded pipes in industries such as metallurgy, petroleum, construction, transportation, machinery, and vehicles.

▶ Size range divided by purpose

▶ Straight Seam Welded Pipe Unit Application Scope:

▶ 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.