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 |
| Usage | Construction (pipe pile) |
| External Diameter (mm) | 350 - 1600 (14" - 63") |
| Width (mm) | 6 - 60 (1/4" - 2.36") |
| Length (m) | 6 - 12 |
| Name | Straight Seam Welded Pipe Unit |
| 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 | Usage | Construction (pipe pile) |
| External Diameter (mm) | 350 - 1600 (14" - 63") | Width (mm) | 6 - 60 (1/4" - 2.36") |
| Length (m) | 6 - 12 | Name | Straight Seam Welded Pipe Unit |
| Brand Name | Duolek | Model Number | ZFHGJ |
| Place of Origin | Qingdao, China | ||
| High Light | Φ355 - Φ720 Mm Straight Seam Welded Pipe Unit ，6 - 22 Mm Thickness Straight Seam Welded Pipe Unit ，20 M/Min Speed Straight Seam Welded Pipe Unit | ||
High frequency straight seam welded pipe unit
This production line is a specialized equipment for producing straight seam welded pipes in industries such as metallurgy, petroleum, construction, transportation, machinery, and vehicles. It uses hot-rolled steel strips as raw materials and produces round and rectangular pipes of the required specifications through cold bending and high-frequency welding methods.
This production line adopts mature, reliable, complete, and economically applicable production processes to ensure that the physical quality, cost, and various consumption indicators of the products reach a relatively advanced level. The products produced have strong competitiveness in terms of quality and price.
Production line process flow:
Raw material (strip steel coil) → uncoiling → storage → passive leveling → forming and rolling → high-frequency welding → removal of external burrs → zinc replenishment → spray cooling → sizing and shaping → rough straightening → cutting to length → pipe collection and bundling.
Straight seam submerged arc welded pipe unit
It is to open and level a steel plate of a certain width after longitudinal cutting and slitting, and then enter the forming machine. The fully automatic and accurate control flexible forming is used, and the steel plate is bent into a circular pipe using rollers. The steel pipe is pre welded using gas shielded welding. Then cut off and perform submerged arc welding on the inner and outer welds of the steel pipe offline. After water pressure testing, flat head chamfering, weld seam and pipe body inspection, qualified submerged arc welded pipes are obtained.
| 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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