The 3-axle mechanical suspension detachable side-wall semi-trailer is a highly versatile and multi-functional transport solution designed for diverse cargo needs. Featuring a convertible design, it can be used as a side-wall semi-trailer for bulk goods or quickly transformed into a flatbed trailer for oversized loads. Additionally, it is equipped with 12 twist locks for secure container transport, making it ideal for logistics, construction, and shipping industries. Built with a robust mechanical suspension system and a three-axle configuration, this trailer ensures stability, durability, and compliance with heavy-duty transportation requirements.