The phrase “with twin pipe” on goods wagons refers to the twin pipe air brake system used in Indian Railways. This system includes two pipes: the brake pipe and the feed pipe.
The brake pipe runs throughout the length of the train, allowing the driver to control the brakes from the locomotive. The feed pipe, on the other hand, continuously charges the auxiliary reservoirs in each wagon, ensuring that the brakes are always ready for use.
This setup enhances the efficiency and reliability of the braking system, providing better control and safety for freight operations.