Mechanical pig includes metal body, disc and cleaning parts. The main material of the disc is artificial rubber. It plays a guiding and sealing role. The sweeping piece is made of stainless steel wire brush or artificial rubber blade. Several bypass holes are reserved at the top of the front of the pig to control the pig’s traveling speed in the pipeline.

With the rapid development of the pipeline transportation industry. As a piece of necessary equipment for the construction, operation, and protection of the pipeline system, pigging equipment is also constantly improved and improved. In this field, people have studied and applied two basic categories of soft pigs and mechanical pigs. Some soft pigs, whether spherical or cylindrical, adopt the wear-resistant method of adding fiber. Soft pigs also include foam pigs and polyurethane solid pigs. Urethane Cleaning Pig is a kind of polyurethane solid pig.

Uni-directional Scraper Pig is a common pig. It has 4 cups and a steel frame. The pig can remove soft dirt and dust from the pipeline. Its leather bowl has two functions. First, it has a good sealing performance. Therefore, it can completely separate the liquid or gas at both ends. Then a pressure difference will be formed at both ends of it, which can push it to run. Second, it can clean the sundries in the pipe and the dirt on the inner wall of the pipe.