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 | 300x300-600x600 Square Pipe Welded Pipe Mill ，6-22mm Thickness Straight Seam Welded Pipe Unit ，20m/min Speed Pipe Rolling Mill | ||
DRC - 720 Straight Seam Welded Pipe Unit Flexible Production Rolling Tube , Etc
Duolek is committed to providing mature and reliable overall solutions for straight seam welded pipes, with excellent unit performance and complete processes. Below is an analysis of the two types of units from the perspective of core technology:
High frequency straight seam welded pipe unit
Production materials: Adopt strip steel with a maximum width of 1500mm and low carbon content, which is conducive to welding and processing.
Forming process: The cold forming process using multiple rollers can continuously and smoothly squeeze and align the two ends of the strip steel, ensuring uninterrupted forming process and extremely high efficiency.
Tightening method: By utilizing the skin effect and proximity effect of high-frequency current, the cross-section of the strip is instantly heated to a self melting state and firmly welded under external force.
Submerged arc straight seam welded pipe unit
Production materials: Using the narrowest 1250mm coils, medium plates, and medium thick plates as raw materials, suitable for the production of thick walled pipes.
Forming process: JCOE cold stamping forming technology is adopted to gradually form the sheet metal in increments of about 50mm, with high precision and suitable for high-strength materials.
Tightening method: Welding is carried out using the electric shock generated between the welding wire and the plate, which belongs to filler fastening, with high weld quality and excellent mechanical properties.
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 |
| 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 |
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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