In modern piping system design and installation, connecting pipes of different shapes and dimensions remains a persistent challenge. Our "PVC Round-to-Flat Reducing Elbow" is a precision-engineered solution developed specifically to address this need. Designed to enable a smooth transition from round to flat ducting, this fitting is widely used in drainage, ventilation, and industrial fluid conveyance systems, ensuring media flows seamlessly through changes in diameter and direction, minimizing turbulence and pressure loss.
Manufactured through precision injection molding using high-grade PVC, the elbow delivers exceptional resistance to chemical corrosion, UV degradation, and long-term dimensional stability. Its structural design balances mechanical strength with fluid dynamics—featuring a smooth internal surface that reduces friction and enhances overall system efficiency. One end features a 110mm round connection, while the other transitions to a 100mm equivalent flat outlet, allowing precise integration with various duct types. The design eliminates the need for additional adapters, simplifying on-site installation and reducing labor time.
Each package contains 54 elbows, making it ideal for large-scale construction projects where bulk availability reduces procurement and inventory costs. The product maintains stable physical properties across a wide temperature range from -5°C to 60°C, resisting cracking or deformation even under thermal fluctuations. Its smooth, burr-free surface is easy to clean and meets hygiene standards for both potable and non-potable water applications.

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