Belongs to the machinery industry.
Quick locks and double expansion rings are generally classified as pipe repair materials and equipment. These techniques and tools are used to repair a variety of pipes, including drains. Quick locks and double expansion rings can be used to repair pipes with a diameter greater than or equal to 800mm, as well as repair local damage to extra-large drainage pipes. These technologies and tools can be used to repair structural defects in pipelines, including minor dislocations, disconnections, leaks, etc., as well as repair local trachoma, rock exposure, spalling and other diseases on the inner wall of the pipeline.
They can also perform preventive repairs when pipe joints are in a leaky or critical state. However, it should be noted that these techniques and tools are not suitable for repairing structural defects such as pipeline foundation fractures, pipeline ruptures, pipeline disconnections and upside-down shapes, serious misalignment of pipeline interfaces, and severe deformation of pipeline linear shapes.