The PVC Reducing Coupling is a versatile fitting designed to connect pipes of different diameters, widely used in drainage, water supply, and industrial piping systems. Made from high-quality PVC material, this product offers corrosion resistance and anti-aging properties, ensuring long-term stable performance in various harsh environments. Its unique design allows for seamless transitions between two pipes of differing diameters, guaranteeing smooth water flow with no leaks.
Visually, the PVC Reducing Coupling features two ends with distinct inner diameter sizes, such as common specifications like D75×D50, D110×D50, etc., catering to diverse pipe connection requirements. The surface is smooth, and the edges are meticulously finished to minimize water resistance and enhance overall system efficiency. Additionally, the product undergoes rigorous testing to meet international standards, ensuring reliable sealing and durability under high pressure and temperature conditions.
In practical applications, the PVC Reducing Coupling is commonly used in building drainage systems, agricultural irrigation pipelines, and industrial wastewater discharge systems. Its lightweight nature and ease of installation significantly reduce construction difficulty and costs. Whether for new pipeline installations or retrofitting existing systems, this product provides a reliable solution, making it an ideal choice for modern piping engineering.

Shanghai Pirsa Pipe Industry Co., Ltd. was established in 2003. We have two production bases located in Shanghai, China and Zhoukou, Henan Province, with cooperative bases covering Fujian, Anhui, Yunnan, Chongqing, and Shenyang in China. The factory covers an area of 100000 square meters; Over 100 production lines with an annual production capacity of 100000 tons and an annual sales revenue of 600 million RMB.
The products include PP-R, PE-RT, PE water supply pipes PB、 Nearly a hundred series of products including stainless steel drinking water pipes, HDPE drainage pipes and double wall corrugated pipes, PVC-U drainage pipes and electrical conduit, PVC-C high and low voltage power pipes, switch sockets, bathroom plumbing, and pre purified water.
The company was established in 2003
Factory area of 100000 square meters
Over 100 production lines