Once the busiest port in the region, its facilities  were mainly for exporting of processed tin ore. Opened in 1877 as the gateway for cargo ships, Port Weld is now called Kuala Sepetang. No longer a main port, it is now mainly used by fishing boats.

In the past, Port Weld was an important port for import export activities between Taiping and Penang. Apart from Teluk Intan. Port Weld is also used as an exit point to the Kinta District and Upper Perak District. At that time, the items traded were opium, preserved vegetables, tobacco and tin ore.

Port Weld's activities with Taiping increased when a railroad was built. Works on the railroad started in the end of 1884 and its construction was managed by the Ceylon Pioneer Corps. On February, the railroad was officially opened and plying the Taiping and Port Weld route transported passengers and goods.