Submarine casing, also known as waterproof casing, is a casing that is lowered from an offshore drilling platform to the shallow seabed. Its main function is to isolate seawater, form a drilling fluid circulation channel, and serve as a supporting structure for the offshore wellhead. During the drilling and completion process, the strength and safety of the riser are crucial for the safety of offshore drilling operations.

The WQT joint sleeve has an effective length of 500mm-1000mm per section and is connected by a joint ball hinge. Each protective tube can rotate at a certain angle in all directions, allowing cables and optical cables to have a certain degree of bending flexibility. Due to its high density and adhesion, this product is suitable for the protection of submarine cable entry sections and has a certain effect on preventing tidal and seawater erosion. It has seismic and impact resistance properties, and the inner diameter of the sleeve is treated with paint anti-corrosion, Having corrosion resistance for a certain period of time can effectively protect submarine power cables and optical cables from external mechanical damage and damage.