The applicable scales for double beam cranes mainly refer to their technical specifications and capacities, which can vary depending on the manufacturer and intended use. Here are some key scales and ratings to consider for double beam cranes:

1. Load Capacity

Rated Load: The maximum load that the crane is designed to lift safely. This is usually expressed in tons or kilograms and is a critical factor in determining the crane's suitability for a particular application.

Working Load Limit (WLL): The maximum load that should be lifted under normal operating conditions, which is typically less than the rated load to ensure safety.

2. Lifting Height and Span

Lifting Height: The maximum vertical distance that the crane can lift a load.

Span: The horizontal distance between the two support structures (e.g., the crane's runways or beams).

3. Crane Duty Class

This refers to the crane's duty cycle, which indicates how frequently the crane is expected to operate. Duty classes range from light duty (occasional use) to severe duty (continuous, heavy-duty use).

4. Speed Specifications

Lifting Speed: The speed at which the crane can lift a load.

Traverse Speed: The speed at which the crane can move horizontally along its support structures.

5. Dimensions and Weights

Overall Dimensions: The crane's physical size, including its height, width, and length.

Weight: The crane's total weight, which can affect its installation and transportation requirements.

6. Environmental and Operational Conditions

Temperature Range: The range of temperatures in which the crane can safely operate.

Weather Resistance: The crane's ability to withstand different weather conditions, such as rain, snow, and extreme temperatures.

Operating Environment: Whether the crane is intended for indoor or outdoor use, and any specific environmental factors that need to be considered (e.g., exposure to chemicals, dust, or corrosive environments).

7. Standards and Certifications

Compliance with Standards: The crane should comply with relevant industry standards and regulations, such as those set by ASME, ANSI, or ISO.

Certifications: Certifications from third-party agencies that confirm the crane's compliance with applicable standards and regulations.

8. Customization and Options

Customization: Many double beam cranes can be customized to meet specific requirements, such as special lifting equipment, control systems, or safety features.

Options: Additional features or upgrades that can be added to the crane, such as remote controls, anti-sway systems, or load-monitoring devices.

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