Import 3" Heavy Duty No Hub Coupling — Buy in Bulk from Supplier in China

This 3 inch heavy duty no hub coupling is designed for cast iron pipe connections, using 300 series stainless steel for the shield and EPDM or neoprene for the packing seal. The unit is supplied in cartons of 100 pieces, with the port of loading at Xingang, China. The coupling is built to create a leak proof joint without the need for a hub, making it suitable for soil pipe systems in commercial and residential plumbing.

The stainless steel construction provides corrosion resistance in wet or underground environments, while the EPDM or neoprene gasket ensures a tight seal against water and gas. Typical industry standards for such couplings include a working pressure range of 10 to 15 psi and a temperature tolerance from -20°C to 80°C. The coupling’s clamp design allows for quick assembly and disassembly, which is a key advantage in maintenance intensive installations.

These couplings are primarily used in drainage, waste, and vent systems, as well as in industrial piping where cast iron fittings are common. Buyers typically source these in bulk for large scale projects, such as high rise buildings, hospitals, or municipal infrastructure. The product is part of a broader range that includes cast iron soil pipes, roof drains, and floor drains, all manufactured by the supplier since 1996.

Richang Qiaoshan Trade Co. Ltd. is based in Chaoyang, Beijing, China, with its registered address at 4-3-103, Xinyuanxilizhongjie. The company specialises in the manufacture of cast iron soil pipes, fittings, and related plumbing components, including no hub couplings, flexible rubber couplings, and heavy duty couplings. Its product line also extends to cast iron roof drains, floor drains, closet flanges, and downspout nozzles.

The supplier has been producing these components since 1996, focusing on durability and compatibility with standard plumbing systems. The company’s trust tier is classified as harbor, though its current response rate and average response time are not publicly available. The product descriptions provided by the supplier emphasize the materials used and the applications for which their components are suited.