Double Girder Bridge Cranes: Top Running vs. Underhung

1. Introduction to Double Girder Bridge Cranes

Double girder bridge cranes represent the pinnacle of industrial lifting technology, offering superior strength, durability, and performance compared to single girder alternatives. As a leading manufacturer, Dongqi Grue provides both top running double girder bridge cranes et underhung double girder bridge cranes to meet diverse material handling needs across industries.

Key Advantages of Double Girder Design

• Higher load capacities (5-500+ tons)
• Increased hook height for better vertical clearance
• Enhanced stability with dual load-bearing beams
• Longer service life in heavy-duty applications
• Greater customization options for specialized needs

2. Top Running Double Girder Bridge Cranes

2.1 Design & Construction Features

Dongqi’s top running double girder bridge cranes feature:

• Robust box girder construction with FEM-standard steel
• Heavy-duty end trucks with forged steel wheels
• Precision-aligned runway systems
• Modular design for easy installation and maintenance

2.2 Technical Specifications

2.3 Pricing Structure

• Standard models: $25,000-$150,000
• Custom configurations: +20-50% premium
• Factors affecting price:
• Capacity requirements
• Span length
• Hoist type (wire rope vs. chain)
• Automation level
• Special environmental protections

2.4 Ideal Applications

• Steel mills and foundries
• Heavy manufacturing
• Power generation plants
• Large-scale assembly operations
• Shipbuilding yards

3. Underhung Double Girder Bridge Cranes

3.1 Unique Design Characteristics

Dongqi’s underhung double girder bridge cranes offer:

• Space-saving configuration utilizing building structure
• Lower headroom requirements
• Lighter weight construction
• Flexible installation options

3.2 Technical Specifications

3.3 Pricing Structure

• Standard models: $15,000-$60,000
• Custom solutions: +15-40% premium
• Cost advantages:
• Lower structural requirements
• Reduced installation costs
• Minimal foundation work needed

3.4 Ideal Applications

• Automotive manufacturing
• Warehousing and distribution
• Food processing facilities
• Light to medium industrial plants
• Facilities with height restrictions

4. Key Differences Between Top Running and Underhung Models

4.1 Structural Comparison

4.2 Performance Comparison

4.3 Cost Comparison

5. Customization Options from Dongqi Crane

5.1 Standard Customizations

• Capacity upgrades within design limits
• Span adjustments to fit facility
• Special coatings (epoxy, galvanized, stainless)
• Control systems (pendant, radio, automated)

5.2 Advanced Custom Solutions

• Explosion-proof configurations
• High-temperature adaptations
• Cleanroom-compatible designs
• Multi-hoist systems
• Automation integration

5.3 Special Features

• Anti-sway technology
• Load monitoring systems
• Collision avoidance
• Remote diagnostics
• Energy recovery systems

6. Selection Guide for Industrial Buyers

6.1 When to Choose Top Running

• Heavy load requirements (>20 tons)
• High duty cycle operations
• Need for maximum hook height
• Outdoor or harsh environments
• Long-span applications

6.2 When to Choose Underhung

• Limited headroom facilities
• Light to medium duty cycles
• Existing structural support available
• Les contraintes budgétaires
• Quick installation needs

6.3 Decision Factors

1. Load requirements (current and future)
2. Facility constraints (height, floor space)
3. Operational intensity (hours/day, lifts/hour)
4. Environmental conditions
5. Budget considerations

7. Dongqi Crane’s Manufacturing Excellence

7.1 Quality Assurance

• ISO 9001 certified production
• FEM 1.001 design standards
• 125% load testing protocol
• Third-party inspection available

7.2 Engineering Capabilities

• In-house R&D department
• Advanced CAD/CAM systems
• Finite element analysis
• Prototyping facilities

7.3 Global Project Experience

• 5000+ cranes installed worldwide
• Successful projects in 30+ countries
• Industry-specific expertise

8. Maintenance & Service Support

8.1 Preventive Maintenance

• Scheduled inspection programs
• Lubrication services
• Alignment checks
• Electrical system testing

8.2 Repair Services

• Emergency breakdown support
• Component refurbishment
• System upgrades
• Retrofit solutions

8.3 Spare Parts Availability

• Global inventory network
• OEM quality components
• Fast shipping options
• Competitive pricing

9. Why Choose Dongqi Crane?

9.1 Competitive Advantages

• 30% cost advantage over European brands
• 50% faster delivery than industry average
• 100% design flexibility for special requirements
• 24/7 technical support worldwide

9.2 Customer Success Stories

• Steel Mill Project: 200-ton top running crane
• Automotive Plant: Underhung system installation
• Warehouse Solution: Custom underhung design
• Power Station: Heavy-duty top running crane

10. Getting Started with Your Project

10.1 Consultation Process

1. Initial needs assessment
2. Technical specification development
3. Proposal and quotation
4. Engineering review
5. Manufacturing and delivery
6. Installation et mise en service

10.2 Request a Quote

Provide your basic requirements to receive:

• Preliminary specifications
• Budgetary pricing
• Delivery timeline
• Configuration options

Contact Our Engineering Team Today:
📞 +86 18638815424
📧 sales010@cranesdq.com
🌐 https://www.craneyt.com/double-girder-bridge-cranes-top-running-vs-underhung.html

Keywords: Double Girder Bridge Crane, Top Running Double Girder Bridge Crane, Underhung Double Girder Bridge Crane, Industrial Overhead Cranes, Heavy Duty Lifting Solutions