Marine Steel Vertical Ladder
GB3892-83 (Replaces CB73-75, CBM2004-81)
Application
It is applicable to cabins, bulkheads, masts, and deck houses on ships, etc. It is not suitable for cargo holds and oil tanks. It complies with ISO 3797-76.
Type Specification Table
| Type | Step Type | Step Diameter/Size | Step Width B (mm) | Ladder Length L (mm) |
|---|---|---|---|---|
| A | Round bar step | φ20, φ22 | 300, 350, 400 | 600 – 6000 |
| B | Square bar step | □20, □22 | 300, 350, 400 | |
| C | Pipe step | φ22 | 300, 400 | 600 – 3600 |
Marking Example
An A-type marine steel vertical ladder with a step width B = 300mm and ladder length L = 2000mm:
Vertical Ladder A300×2000 GB3892-83
Diagram
The diagram shows a technical drawing of the marine steel vertical ladder, including a front – view and a side – view of the ladder structure, along with detailed views of the step and its connection parts, and dimensional annotations in millimeters (mm).
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