Shandong Dorco Heavy Machinery Co., Ltd.
                                                                                                           
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DRC-720 Straight Seam Welded Pipe Unit for Flexible Production with 300x300-600x600 Square Pipe and 6-22mm Thickness

Price Negotiable
Price: 200000 - 1190000 USD per set
MOQ: 1 set
Delivery Time: 45 - 75 working days
Brand: Duolek
Product Description
DRC-720 Straight Seam Welded Pipe Unit Flexible Production Rolling Tube
Duolek provides mature and reliable solutions for straight seam welded pipes, with excellent unit performance and complete processes. Our technology analysis covers two core unit types:
High Frequency Straight Seam Welded Pipe Unit
  • Production materials: Strip steel with maximum width of 1500mm and low carbon content for optimal welding and processing
  • Forming process: Cold forming using multiple rollers for continuous, efficient alignment and shaping
  • Tightening method: High-frequency current heating for instant melting and firm welding under external force
Submerged Arc Straight Seam Welded Pipe Unit
  • Production materials: 1250mm coils, medium plates, and thick plates for heavy-walled pipe production
  • Forming process: JCOE cold stamping forming technology for high-precision shaping of high-strength materials
Technical Specifications
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 by Application
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
Custom specifications available according to customer requirements
Duolek Straight Seam Welded Pipe Unit in operation Close-up view of welded pipe production
Application Scope
Specialized equipment for producing straight seam welded pipes in industries including metallurgy, petroleum, construction, transportation, machinery, and vehicles.
Industrial applications of straight seam welded pipes
Customer Factory Inspection
Customer inspection at Duolek factory
Client Testimonials
Customer testimonials about Duolek products
Frequently Asked Questions
What information do we need customers to provide?
Duolek has an R&D Center focused on product development. We can design and modify products according to customer requirements, maintaining an open approach to customer service.
What's your quality control system?
We operate an ISO9001 Quality Management System. Our quality control includes materials inspection, machining process control, finished product testing, and pre-shipment inspection. Each step has dedicated inspectors with recorded test results.
What payment terms do you accept?
We prefer bank transfer (T/T): 30% deposit with order confirmation and 70% before shipment. Letters of Credit (L/C) are accepted for orders over $200,000 USD.
What is your warranty policy?
All products carry a one-year warranty from delivery date against defects in materials and workmanship. Normal wear and tear are not covered.

Get in Touch

Have questions about our products or want to discuss a custom order? Our team is ready to help you.

Company Shandong Dorco Heavy Machinery Co., Ltd.
Location North of Zhuzhu Road, Puji Town, Jiaozhou City, Qingdao, China
Contact Person Sophie

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