The Difference Between Cast-in Rail Shoulder and Weld-on Shoulder

Installation method

The cast-in shoulder is integrated into the sleeper during the manufacturing process, and the shoulder is poured directly into the concrete or other materials of the sleeper. Weld-on shoulder is fixed to the rail seat by welding and they are welded directly to the rail foot.

Connection

The cast-in shoulder fits firmly into the sleepers to form a unified structure without the need for additional fasteners or welding. Weld-on shoulder is welded directly to the rail for a strong and permanent connection.

Durability

Cast-in rail shoulder and Weld-on shoulder have good durability due to their integrated features. Rail shoulders and sleepers function as a whole, and the connection between them is usually firm and stable.

Maintenance

Maintenance of cast-in shoulder includes maintaining the condition of the crossties themselves, there are no separate parts like fasteners that need to be inspected or replaced periodically. Weld-on shoulder generally require less maintenance, and welded connections are less prone to loosening and falling out.

Installation techniques

Prefabricated sleepers require a specialized manufacturing process during sleeper production, which may be performed in a prefabrication factory, which reduces the need for on-site welding and installation expertise. Weld-on shoulder requires specialized skills and equipment, proper welding procedures must be followed to ensure a strong and reliable connection, and installation requires welding experts.