Shandong Dorco Heavy Machinery Co., Ltd.
| Payment Terms | ,L/C,T/T |
| Delivery Time | 45 - 75 working days |
| Packaging Details | After being wrapped with stretch film, it is shipped unpacked in the container. |
| Model | DRC - 720 Straight Seam Welded Pipe Unit |
| Round pipe ( mm ) | Φ 355 - Φ 720 |
| Square pipe ( mm ) | 300 X 300 - 600 X 600 |
| Thickness ( mm ) | 6 - 22 |
| Speed ( m / min ) | 20 |
| Features | Easy to change specifications |
| Brand Name | Duolek |
| Model Number | ZFHGJ |
| Place of Origin | Qingdao, China |
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Product Specification
| Payment Terms | ,L/C,T/T | Delivery Time | 45 - 75 working days |
| Packaging Details | After being wrapped with stretch film, it is shipped unpacked in the container. | Model | DRC - 720 Straight Seam Welded Pipe Unit |
| Round pipe ( mm ) | Φ 355 - Φ 720 | Square pipe ( mm ) | 300 X 300 - 600 X 600 |
| Thickness ( mm ) | 6 - 22 | Speed ( m / min ) | 20 |
| Features | Easy to change specifications | Brand Name | Duolek |
| Model Number | ZFHGJ | Place of Origin | Qingdao, China |
| High Light | Φ355-Φ720 Straight Seam Welded Pipe Unit ，300X300-600X600 Welded Pipe Mill ，6-22mm Pipe Manufacturing Equipment | ||
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.
| Model | Round pipe (mm) | Square pipe (mm) | Thickness (mm) | Speed (m/min) |
| DRC-12 | Φ4-Φ12 | / | 0.2-0.5 | 120 |
| DRC-16 | Φ6-Φ16 | / | 0.2-0.8 | 120 |
| DRC-20 | Φ8-Φ20 | 6x6-15x15 | 0.3-1.0 | 120 |
| DRC-25 | Φ10-Φ25 | 7x7-19x19 | 0.3-1.5 | 120 |
| DRC-32 | Φ12-Φ32 | 9x9-25x25 | 0.5-2.0 | 120 |
| DRC-50 | Φ20-Φ50 | 15x15-39x39 | 0.8-3.0 | 120 |
| DRC-76 | Φ32-Φ76 | 25x25-59x59 | 1.2-4.0 | 120 |
| DRC-89 | Φ42-Φ89 | 35x35-70x70 | 1.5-4.5 | 110 |
| DRC-114 | Φ48-Φ114 | 40x40-90x90 | 1.5-4.5 | 70 |
| DRC-140 | Φ60-Φ140 | 50x50-110x110 | 2.0-5.0 | 60 |
| DRC-165 | Φ76-Φ165 | 60x60-130x130 | 2.0-6.0 | 55 |
| DRC-219 | Φ89-Φ219 | 70x70-170x170 | 2.0-8.0 | 50 |
| DRC-273 | Φ114-Φ273 | 90x90-210x210 | 3.0-10.0 | 45 |
| DRC-325 | Φ140-Φ325 | 110x110-250x250 | 4.0-12.7 | 40 |
| DRC-377 | Φ165-Φ377 | 130x130-280x280 | 4.0-14.0 | 35 |
| DRC-406 | Φ219-Φ406 | 170x170-330x330 | 6.0-16.0 | 30 |
| DRC-508 | Φ273-Φ508 | 210x210-400x400 | 6.0-18.0 | 25 |
| DRC-660 | Φ325-Φ660 | 250x250-500x500 | 6.0-20.0 | 20 |
| DRC-720 | Φ355-Φ720 | 300x300-600x600 | 6.0-22.0 | 20 |
▶ Size range divided by purpose
| Usage | External Diameter (mm) | Weight (mm) | Length (m) |
| Oil and gas pipelines | 406 - 1524 (16" - 60") | 6 - 40 (1/4" - 1.57") | 8 - 12.1 |
| Construction (pipe pile) | 350 - 1600 (14" - 63") | 6 - 60 (1/4" - 2.36") | 6 - 12 |
| Rolling tube | 1200 - 3800 (47.24" - 150") | 12 - 120 (1/2" - 4.7") | ≤3.2 |
| Note: Besides the above specifications, production can also be customized according to customer requirements | |||
▶ 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
Company Details
Business Type:
Manufacturer,Distributor/Wholesaler,Exporter,Seller
Total Annual:
300-500
Employee Number:
50~60
Ecer Certification：
Verified Supplier
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 equipmen... 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 equipmen...
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