Marine Steel Vertical Ladder (GB3392 – 83)
Top – left Image
It is a technical drawing of a marine steel vertical ladder, presented in a side – view. The drawing includes detailed dimensional annotations, showing the structure of the ladder with steps, side – rails, and other components. There are also some notes and reference lines indicating specific features and measurement points.
Top – right Text
The text states that this ladder is used on ships for cabins, bulkheads, masts, posts, and deck houses, and it meets the ISO 3797 – 76 standard. The English translation is: “Used for cabins, bulkheads, masts, posts, and deck houses on ships. It meets ISO 3797 – 76.”
Middle Table
The table provides specifications for different types of marine steel vertical ladders, including the step type, step size, width (B in mm), and length range (L in mm).
| Type | Step Type | Step Size | B (mm) | L (mm) |
|---|---|---|---|---|
| A | Round bar step | Φ20 (round bar with a diameter of 20mm) | 300, 350 | 600 – 6000 |
| Φ22 (round bar with a diameter of 22mm) | 400 | |||
| B | Square bar step | 20×20 (square bar with side – length of 20mm) | 300, 350 | 600 – 6000 |
| 22×22 (square bar with side – length of 22mm) | 400 | |||
| C | Pipe step | Φ22 (pipe with an outer diameter of 22mm) | 300, 400 | 600 – 6000 |
Bottom Marking Example
For a type A marine steel vertical ladder with a width B of 300mm and a length L of 2000mm, the marking is “Vertical ladder A300×2000 GB3392 – 83”.
Note:
- The step type indicates the shape and form of the steps, such as round bar, square bar, or pipe.
- The step size specifies the dimensions of the step material, like diameter for round bars and pipes, and side – length for square bars.
- B represents the width of the ladder, and L represents the length range of the ladder, which can be customized within the given range.
- The marking example shows the standard way to label the product, including the type, width, length, and the standard number (GB3392 – 83).
Attention please: The description may be different with the product, please contact us for quotation.
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