Our heavy-duty crane girders are engineered to withstand rigorous cyclic and dynamic loading in accordance with AISC and Eurocode standards. Utilizing precision camber control and full-penetration welding on the top flange, our girders ensure maximum fatigue resistance and structural longevity for 24/7 industrial operations.
Types of Crane Girders
Simply Supported Crane Girder
Features: Supported on steel columns at both ends. Easy to construct with definite force distribution.
Application: Widely used for spans of 6 to 12 meters and light-capacity cranes; it is the most popular type on the market.
Continuous Crane Girder
Features: Designed as multi-span continuous structure with even stress distribution. It enables smaller beam sections and material savings, yet involves higher construction difficulty.
Application: Mainly adopted in large-span and heavy-load workshops such as metallurgical plants and heavy machinery factories. Its application scope is relatively limited.
Truss-type Crane Girder
Features: Truss structure effectively reduces self-weight, while the overall construction is complicated.
Application: Ideal for ultra-long-span projects.
Specification of Crane Girders
| Item | Specifications |
| Description | Structural Steel Crane Girders |
| Material Grade | Q355B/C/D/E, S355JR/J0/J2, ASTM A572 Grade 50/60 |
| Standard | AISC 360, Eurocode 3 (EN 1993), ASTM A6, AS/NZS 3678 |
| Welding Process | Automatic Submerged Arc Welding (SAW), CO2 Gas Shielded Welding |
| Quality Control | 100% NDT (Ultrasonic Testing), Magnetic Particle (MT), Camber Measurement |
| Application | Heavy Industrial Workshops, Logistics Centers, Shipyards, Power Plants |
| Surface Finish | Shot Blasting Sa 2.5 + High-performance Epoxy Coating or Hot Dip Galvanizing |
| Packing | Heavy-duty Steel Cradles & Secure Lashing for Global Maritime Export |
Roles & Advantages of Crane Girders
Role of Crane Girders
load transmission: it steadily transfers the crane lifting load, self-weight and dynamic impact loads during operation to steel columns and foundations.
precision guarantee: it provides a stable running track for cranes to ensure accurate lifting operations.
Advantages of Crane Girders
High load-bearing capacity & large span: Steel features far higher strength than concrete, fully meeting the requirements of large-span workshops and heavy-duty cranes.
Fast construction & cost saving: All components are prefabricated in factory. Easy on-site installation shortens construction duration and cuts labor costs.
Excellent seismic performance & recyclability: Steel boasts high toughness and outstanding seismic resistance. It can be recycled and reused after demolition, which is eco-friendly.
Applications of Crane Girders
Industrial Manufacturing：Production lines for heavy machinery and equipment assembly.
Warehousing & Logistics：High-capacity storage facilities for moving steel coils and pallets.
Power & Energy Plants：Installation and maintenance of turbines and generators in power halls.
Shipbuilding & Metallurgy：Assembly of hull sections and transport of molten metal in steel mills.
Aircraft & Rail Maintenance：Engine lifting and heavy component maintenance in hangars and depots.
Recommendations for Crane Girders Installation
1.Pre-installation Inspection：Verify component dimensions and weld quality prior to installation. Remove debris from column corbels and ensure full contact surfaces are flat and clean.
2.Strict Control over Lifting & Alignment Accuracy：Use a level instrument to calibrate the elevation of crane girders. The allowable deviation of the centerline axis is ±3 mm, and the surface flatness tolerance shall not exceed 5 mm per 2 meters, to prevent crane derailment during operation.
3.Secure Fixing & Final Acceptance：Check verticality after temporary fixation. Apply anti-corrosion treatment upon completion of welding. Conduct load tests to verify overall performance. The beams can only be put into service after passing all inspections.
Our Quality Control
We conduct rigorous testing and inspection throughout the fabrication of structural steel components for crane girders to ensure full quality control.
Material Inspection
Chemical composition & mechanical property testing
Weld Inspection
100% non-destructive testing (NDT) to ensure no cracks or porosity
Load Testing
Simulated stress condition testing
