Shandong Dorco Heavy Machinery Co., Ltd.
Shandong Dorco Heavy Machinery Co., Ltd.
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Custom Built Spiral Weld Pipe Mill High Frequency Erw Pipe Mill Line Molding Stability
The straight seam welded pipe unit produced by DORCO is a mature industrial pipe making equipment, relying on years of technical accumulation and process optimization, with stable and reliable performance advantages.
▶ High - frequency ERW Pipe Mill
This mill adopts an internationally advanced forming system and has a series of advantages such as stable forming, good surface quality of steel pipes, convenient specification change, advanced technology, reliable equipment, perfect process, and mature production.
Production materials: It uses the widest 1500mm strip steel as production materials, with a low strip steel content.
Forming process: It adopts a cold - forming process with multiple rollers, extruding and aligning the two ends of the strip steel. The advantage is that the forming method is uninterrupted and continuously tight.
▶Submerged arc straight seam welded pipe unit
This unit is a specialized equipment for producing straight seam welded pipes in industries such as metallurgy, petroleum, and construction. By adopting mature and reliable advanced processes and equipment, we ensure that product quality, cost, and various consumption indicators reach advanced levels, and have strong competitiveness in terms of quality and price.
Production materials: It uses the narrowest 1250mm production coil plates, medium plates, and medium - thick plates as production materials.
Forming process: JCOE cold stamping forming, which is characterized by the gradual forming of plates in units of 50mm.
▶Automatic Steel Pipe Hydrostatic Testing Machine
DORCO's automatic steel pipe hydrostatic testing machine is the main inspection equipment for welded pipe production. It is controlled by PLC, and the working processes of each part are automatically completed in sequence. It also has the function of automatically recording test result parameters.
▶Automatic End - facing and Chamfering Machine
The chamfering machine is one of the auxiliary machines of the welded pipe mill. It is specially used to process the bevel of the pipe end and flatten the end of the steel pipe for on - site welding.Steel pipe diameter: φ20mm - φ3500mm.
▶Ultrasonic Flaw Detector
Alerts and marks defects automatically, prompting workers to adjust parameters accordingly. Weld sections marked by continuous ultrasonic flaw detection undergo secondary inspection via manual ultrasonic and X - ray techniques. Repaired defects are subject to repeated non - destructive testing until full defect elimination is verified.
▶X - ray
Equipment DORCO Heavy Industry's X - ray apparatus can detect concealed solder joints in various welded pipes and also conducts intelligent analysis of detection outcomes, providing an effective means for attaining "first - time pass rate" and "zero defect" objectives.
| 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:
▶ Why choose us?
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, Dorco's related equipment ranks among the top ten in the industry, which means reliable quality and price.
With 21 years of manufacturing and export experience, Dorco 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
▶ DORCO Factory Common inquiry
Q:What information we need customers to provide?
A:Dorco 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