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What are the functions of the 3-step, 4-step, and 5-step ladders for loading arms?

Jun 27, 2025

                                 What are the functions of the 3-step, 4-step, and 5-step ladders for loading arms?

 

The 3-step ladder (SA-3), 4-step ladder (SA-4), and 5-step ladder (SA-5) for loading arms, also known as mobile ladders, are used by operators to safely walk between the operating platform and the top of tank cars at different heights. They can meet the bridging needs of different platform and tank car distances. As standard products, mobile ladders are equipped with step locking devices, spring cylinder balancing mechanisms, hand and knee guardrails, and flip-up foot guards.

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Main Functions of the 3-step (SA-3), 4-step (SA-4), and 5-step (SA-5) Ladders for Loading Arms

There are generally seven main functions:

 

Equipped with a random balancing device, which can hover at any angle.

Selecting a mobile ladder of appropriate length can meet the needs of different types of vehicles.

The movable steps remain horizontal at any position.

Anti-collision buffer pads are installed at the contact points between the steps and the tank car.

Compact structure: occupies little space when stored.

High load-bearing capacity: up to 200 kg.

Easy installation: can be fixed with only 4 M16 bolts.

 

The 3-step (SA-3), 4-step (SA-4), and 5-step (SA-5) ladders for loading arms are non-standard products and need to be customized according to the parameters or requirements provided by customers.

 

 

 

 

 

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