Dongqi Crane designs and manufactures QDX 15t double-beam bridge crane for Pakistani steel coil factory
Project Background
A major steel coil mill in Pakistan partnered with Dongqi Crane to design and manufacture a QDX-type 15-ton double-girder bridge crane to enhance heavy-load material handling in its production facility. The crane was required for coil lifting, stacking, and production line coordination, with specifications tailored for high-temperature environments and precision operation.
Customer Requirements & Challenges
- Load Capacity: 15-ton SWL (Safe Working Load), suitable for delicate coil handling (anti-deformation)
- Span Requirement: 35-meter wide coverage for full workshop operation
- Lifting Height: 6.45 meters to accommodate stacking and equipment clearance
- Power Supply: 415V/50Hz/3P (compliant with Pakistani industrial standards)
- Environmental Adaptation: Heat-resistant and dust-proof design (workshop temperature ≥45°C)
Dongqi Crane’s Customized Solution
1. Key Crane Specifications
| Parameter | Specification |
|---|---|
| Model | QDX Double-Girder Bridge Crane |
| Rated Capacity | 15 tons (20% temporary overload) |
| Span | 35 meters |
| Lifting Height | 6.45 meters (customizable) |
| Operating Voltage | 415V/50Hz/3P |
| Control Mode | Remote |
| Speeds | Hoisting: 8m/min |
| Protection Rating | IP54 (dust & splash-proof) |
| Special Feature | Coil-specific lifting beam (C-hook compatible) |
2. Technical Highlights
✔ Long-Span Reinforcement Design
- Box girder structure with ≤1/800 deflection at 35m span
- FEM standard calculations (Germany) for long-term heavy-load stability
✔ High-Temperature Adaptability
- H-class insulated motors (withstands 180°C)
- Heat-resistant brake linings
- Forced air cooling system for electrical cabinets
✔ Coil-Handling Optimization
- Rotating C-hook attachment (prevents coil deformation)
- Dual braking system (hydraulic + electromagnetic)
- Micro-speed mode (0.5m/min for precise positioning)
✔ Smart Safety Systems
- Overload limiter (digital display + alarm)
- Anti-collision laser sensors
- Power-loss auto-locking mechanism
Project Outcomes
- Efficiency Gains:
- 40% faster cycle times (vs. legacy equipment)
- Zero failures in 24/7 operation
- Cost Savings:
- 30% energy reduction (VFD control)
- Maintenance intervals extended to 6 months
- Client Feedback:
“Dongqi Crane’s solution perfectly handles our high-temperature, heavy-duty environment. The 35m span stability exceeded expectations, and their service team responds promptly.”
— Production Director, Pakistani Client
Why Choose Dongqi Crane?
✅ Metallurgical Crane Expertise: 200+ successful coil-handling projects
✅ Localized Support: On-site engineers in Pakistan within 72 hours
✅ Lifetime Maintenance: 10-year warranty on core components
Get Your Custom Solution
Need a coil-handling crane or long-span bridge crane? Contact us for:
📧 sales010@cranesdq.com
🌐 https://pk.craneyt.com/
Keywords: Crane suppliers in Pakistan, 15-ton double girder crane, Steel coil handling crane, Long-span bridge crane, Dongqi Crane case study
