20 Ton with CE ISO Certification High Quality Double Beams Electric Overhead Travelling Crane

• Customization: Available
• After-sales Service: 1 Year
• Warranty: 1 Year
• Certification: CE, ISO9001
• Condition: New
• Operation Form: Remote Control
• Maximum Lifting Height: 30-40m
• Maximum Lifting Weight: >200t
• Main Girder Form: Double Girder
• Type: Explosion-Proof
• Span: 10-35m
• Transport Package: Wooden Box
• Specification: Customized
• Trademark: Shengmiao
• Origin: China
• Production Capacity: 1000 Sets/Year

Product Description

Product Parameters

Parameter	Specifications
Type	Double-Girder, Top-Running or Under-Running
Capacity	5 tons - 500+ tons
Span	10m - 35m (customizable)
Lifting Height	6m - 30m (adjustable)
Hoisting Speed	0.5 - 20 m/min (variable frequency control)
Trolley Travel Speed	10 - 40 m/min
Bridge Travel Speed	20 - 60 m/min
Power Supply	3-Phase, 380V/415V, 50Hz/60Hz (or as per requirement)
Control Method	Pendant control / Radio remote / Cabin-operated / Full automation
Duty Class	FEM 1Am - FEM 3m (Light to Heavy Duty)
Operating Temperature	-20°C to +50°C (customizable for extreme conditions)
Ambient Humidity	≤ 90% (non-condensing)
Safety Features	Overload protection, limit switches, emergency stop, anti-collision system, overload alarm
Structural Material	High-strength steel (Q235B, Q345B, or equivalent)
Hoist Type	Wire rope hoist / Chain hoist (explosion-proof options available)
Drive Mechanism	Geared motor with VFD (Variable Frequency Drive) for smooth operation
Wheel Material	Forged steel / Alloy steel (heat-treated for durability)
Noise Level	≤ 85 dB (low-noise design available)
Standards Compliance	ISO, FEM, CMAA, ASME, CE, GOST (region-specific)
Optional Features	Automated positioning, anti-sway system, weighing system, remote monitoring, explosion-proof design

Product Description

A double-girder Electric Overhead Traveling (EOT) bridge crane is a heavy-duty lifting system consisting of two parallel girders mounted on end trucks that move along elevated runways. The trolley and hoist assembly travels across the bridge, enabling precise horizontal and vertical load movement. Designed for industrial applications, these cranes are built with high-strength steel, ensuring durability under extreme loads (ranging from 5 tons to over 500 tons). They are powered by electric motors with advanced control systems, allowing smooth acceleration, deceleration, and precise positioning. Common configurations include top-running and under-running designs, with optional features like variable frequency drives (VFDs), remote operation, and automated load-sensing technology.

Application Scenarios

Steel & Metal Processing - Handling coils, sheets, and castings in rolling mills and foundries.

Power Plants - Lifting turbines, generators, and heavy maintenance components.

Shipbuilding & Offshore - Moving large ship sections, engines, and structural parts.

Automotive Manufacturing - Transporting presses, dies, and assembled vehicle frames.

Warehousing & Logistics - Loading/unloading heavy containers, machinery, and bulk materials.

Aerospace & Defense - Assembling large aircraft structures and precision equipment.

Construction & Infrastructure - Erecting pre-cast concrete segments and steel beams.

Our Advantages

Higher Load Capacity
Dual girders provide superior structural integrity, supporting significantly heavier loads than single-girder cranes.

Longer Span Capability
Ideal for wide workshops, with spans exceeding 30 meters in some cases.

Enhanced Durability
Reinforced construction resists deformation, even under continuous heavy-duty cycles.

Greater Hook Height
The design allows deeper hook travel, maximizing vertical workspace.

Precision & Control
Advanced drive systems enable smooth operation, minimizing load sway and improving safety.

Customization Options
Can be equipped with specialized features like explosion-proof motors, magnetic lifters, or automated positioning systems.

Low Maintenance
High-quality components and sealed mechanisms reduce wear and downtime.

Space Optimization
Overhead operation eliminates floor obstructions, improving workflow efficiency.

Safety Compliance
Equipped with overload protection, emergency brakes, and limit switches to meet international standards (ISO, FEM, CMAA).
 

Packaging & Shipping

To ensure safe and damage-free transportation, cranes must be securely packaged in heavy-duty wooden crates or steel frames, with critical components like hoists and girders disassembled if oversized and properly strapped. Electrical systems and sensitive parts should be wrapped in waterproof, anti-corrosion materials, while all packages must be clearly labeled with weight, center of gravity, and lifting points. During transit, components must be firmly fastened using chains or straps to prevent shifting, with special attention given to corrosion protection for sea freight and route planning for oversized shipments. These measures guarantee that cranes arrive in optimal condition for assembly and operation.

FAQ

Q1: What's the informtion should l provide when inquiry?
The more details or drawings, the better. Such as Lifting capacity, Lifting height, Span, Voltage or others special requirements.

Q2: Can you provide custom service?
Yes, of course. We are manufacturer and we have our own engineer group They can out customized design according to your requirement. You just need to tell us your requirements.

 Q3: Are there professional technicians to assist in the installation?
Yes.We have a professional installation team and have been to many countries to assist in installation. lf you need us to provide this service, please let us know in advance and we will provide you with the best solution.

Q4: How do you guarantee the quality?
We will constantly check the quality during the manufacturing process, and strictly test the equipment before shipment, and we will also send you aquality certificate.