This case study presents the design, manufacturing, and installation of a 50 ton double girder overhead crane engineered specifically for steel coil handling in a steel processing facility in Argentina. As one of our representative overhead crane export projects in South America, this project demonstrates our capability to deliver a custom overhead crane solution that meets international duty-class standards while addressing the specific operational demands of steel coil transportation.
The customer, an Argentine steel processing plant, required a heavy duty overhead crane capable of safely lifting, transferring, and stacking steel coils within a cold rolling mill and coil warehouse environment. Coil handling places unique demands on crane design — high point loads, off-center lifting, and frequent duty cycles — which is why a double girder overhead crane configuration was selected over a single girder alternative.
Steel coils are dense, heavy, and often lifted with C-hooks or coil grabs rather than standard hooks, which creates asymmetric loading on the crane structure. A double girder overhead crane provides the rigidity, headroom, and lifting height needed to handle these loads safely and efficiently.
Although this project is installed in a steel mill, the crane is specifically designed for steel coil handling in the cold rolling and steel processing workshop — not general-purpose material handling. This distinction matters: a steel mill crane built for coil transfer must account for coil diameter variation, center-of-gravity shifts, and the need for smooth micro-speed control during positioning.
Key advantages of the double girder design for this steel coil handling crane application include:
| Parameter | Detail |
| Crane Type | Double Girder Overhead Bridge Crane |
| Lifting Capacity | 50 Ton (Main Hoist Trolley) / 10 Ton (Auxiliary Hoist, optional) |
| Application | Steel Coil Handling |
| Span | 22.5 m |
| Lifting Height | 12 m |
| Total Travel Length | 100 m (crane runway) |
| Duty Class | A7 / M7 (FEM 2M / ISO Duty Class), Group Classification: Heavy Duty |
| Main Hoist Lifting Speed | 0.5 – 5 m/min (dual speed / VFD stepless) |
| Crane Travel Speed | 0 – 40 m/min (VFD controlled) |
| Trolley Travel Speed | 0 – 20 m/min (VFD controlled) |
| Working Duty | 40% – 60% FEM Load Spectrum, medium-heavy duty cycle |
| Power Supply | 380V / 50Hz, 3-Phase (adjustable per Argentine grid standard, 220/380V 50Hz) |
| Control Mode | Cabin Control + Radio Remote Control |
| Hoist Type | Wire Rope Hoist, double reduction drive |
| Lifting Attachment | Motorized C-hook / Coil Tong (customer-specified) |
| Drive System | VFD (Variable Frequency Drive) for hoisting, crane travel, and trolley travel |
| Control System | PLC-based control with fault diagnostics |
| Safety Features | Overload Limiter, Upper/Lower Limit Switch, Anti-collision Device, Buffer Stops, Rail Sweep |
| End Carriage | Reinforced box-type end carriage with double wheel groups |
| Crane Girder Structure | Box-type double girder, welded steel plate structure |
| Wheel Base | 5.5 m (per end carriage) |
| Environment Rating | Indoor workshop use, ambient temperature -20°C to +40°C |
| Paint / Corrosion Protection | Industrial anti-corrosion coating, suitable for steel mill environment |
| Destination | Argentina, South America |
| Standards Compliance | FEM 1001, ISO 4301, with CE-compatible design documentation |
With a span of 22.5 m and a lifting height of 12 m, the crane was engineered around the customer's existing crane runway structure — a 100 m total travel length — ensuring the end carriage and crane girder assembly integrated seamlessly with the building's steel structure without costly civil modifications.
Argentina's steel processing plants — particularly those serving the automotive, construction, and appliance manufacturing sectors — increasingly require material handling equipment capable of handling both standard and galvanized coil products. This project was engineered to support:
The crane was manufactured, tested, and prepared for export to Argentina, then shipped, installed, and commissioned on-site. Since being commissioned in Argentina, the crane has operated as part of the customer's daily coil handling operations, supporting the plant's steel processing and production efficiency goals.
This project reflects our broader experience delivering overhead crane solutions to the South American steel industry, and adds to our portfolio of completed Argentina overhead crane projects.
To ensure long-term reliability under continuous heavy-duty coil handling operation, the crane incorporates the following industrial-grade components:
Our engineering team worked closely with the Argentine customer throughout the project lifecycle:
This end-to-end process reflects our capability not only as an overhead crane manufacturer, but as a full-service crane solution provider — covering crane installation, crane export, and crane commissioning from design through to handover.
As an experienced overhead crane manufacturer and crane supplier, we specialize in delivering custom overhead crane solutions for heavy industry applications, including:
Every project is engineered around the customer's specific lifting capacity, span, lifting height, and duty class requirements, and supported by our in-house design, manufacturing, and OEM overhead crane production capabilities.
Relevant Cases：Workshop Lifting Upgrade: Double Girder Overhead Crane System, 8 Units of 10 Ton Single Girder Overhead Crane Exported to Steel.
A double girder overhead crane offers greater structural rigidity, higher lifting height, and better stability under the off-center loading created by coil grabs and C-hooks, making it the preferred choice for heavy-duty steel coil transportation.
This project was designed with a 50 ton lifting capacity, engineered specifically for steel coil handling duty cycles in a cold rolling and steel processing environment.
Yes. The crane's structural design, hoist selection, and control system support handling of steel coils, galvanized coils, and PPGI coils commonly processed in cold rolling and coating lines.
Yes. The crane was engineered for use within a cold rolling mill and coil warehouse workflow, supporting coil transfer between production stages with smooth VFD-controlled positioning.
Yes. Span, lifting height, duty class, and control configuration (cabin control or radio remote control) are all customized based on the customer's runway structure and operational requirements.
Yes. Our team supports the full project lifecycle — from site survey and structural design through manufacturing, export logistics, on-site installation, and commissioning — including this project delivered to Argentina.
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