32T Double Girder Overhead Crane for Steel Coil Lifting in Brazil

The correct way is to check the complete lifting system, not only the coil weight.

Engineers usually consider:

• Maximum steel coil weight
• Weight of coil lifting tong
• Lifting frequency
• Working class requirement
• Future production expansion

For example, a 20–25 ton coil does not always require a 25 ton crane. Many steel plants choose a higher capacity crane because the crane may lift hundreds of coils every month.

For the project, Yuantai Cranes reviewed the customer's coil weight, working condition, and lifting method before selecting the 32 ton capacity.

Yes, but the crane does not contact the steel coil directly. The crane works together with a lifting attachment.

Common solutions include:

• Coil lifting tong
• C-hook
• Electromagnetic lifter
• Hydraulic gripping device

During operation, the worker moves the crane trolley above the coil, lowers the lifting device, grips the coil, lifts it, and transfers it to the next position.

Yuantai Cranes supplied a 32 ton double girder overhead crane together with a steel coil lifting tong solution to help operators move coils safely between storage and production areas.

For heavy steel coil handling, stability is more important than only lifting capacity.

A single girder crane may work for lighter applications. However, when the capacity reaches 30 tons or more and the span becomes large, customers usually prefer double girder cranes.

The reasons are:

• Stronger bridge structure
• Higher load stability
• Better trolley running performance
• Longer service life under heavy-duty operation

In this project, the crane span reached 33 meters. Yuantai Cranes selected a double girder design because it matched the customer's large span and continuous steel coil handling requirements.

The main technical data includes:

• Crane type: Double Girder Overhead Crane
• Capacity: 32 tons
• Span: 33 m
• Lifting height: 12 m
• Power supply: 440V / 60Hz / 3 Phase
• Main hook lifting speed: 3.3 / 0.8 m/min
• Hoist traveling speed: 2–20 m/min (VVVF control)
• Crane traveling speed: 3–30 m/min (VVVF control)
• Duty group: ISO A5 (FEM 2M)
• Protection grade: IP55
• Insulation class: F

Yuantai Cranes customized the crane parameters according to the customer's factory power supply, working frequency, and production requirements.

Steel coils are heavy and have large inertia. If the crane starts or stops suddenly, the coil may swing.

VVVF control helps the crane:

• Start smoothly
• Stop accurately
• Reduce load swing
• Improve positioning

Yuantai Cranes equipped this 32 ton crane with VVVF traveling control, allowing smoother movement during steel coil transportation.

Customers should provide the actual working conditions:

• Maximum coil weight
• Coil diameter
• Coil width
• Workshop span
• Runway length
• Lifting height
• Working hours per day
• Power supply
• Indoor or outdoor installation

Many customers only provide "I need a 30 ton crane." However, this information is not enough. The crane design depends on how the crane will work every day.

When Yuantai Cranes receives an inquiry, engineers first confirm these details before preparing the crane proposal and quotation.

Contractors need to check the installation conditions before the crane arrives.

Important items include:

• Runway beam strength
• Rail size
• Building structure
• Power supply location
• Installation space
• Maintenance access

Yuantai Cranes usually reviews workshop drawings and runway conditions before finalizing the crane design to avoid installation problems.