Import Dn3200 Floating Flange Jis Rubber Joint — Buy in wholesale FOB from Supplier in China

The DN3200 Floating Flange Jis Rubber Joint is a flexible piping connector designed to accommodate thermal expansion, vibration, and misalignment in large-diameter industrial systems. It features a synthetic rubber body reinforced with fabric layers and integrated steel flanges conforming to JIS B 2312 standards. The joint has a nominal diameter of 3200 mm and is rated for pressures up to 1.0 MPa, with a maximum axial movement tolerance of ±150 mm and lateral offset of ±50 mm. The flanges are carbon steel, typically finished with epoxy coating for corrosion resistance in wet environments.

The elastomer compound is typically nitrile butadiene rubber (NBR), chosen for its resistance to oils, chemicals, and moderate temperatures up to 80°C. This material is standard for wastewater and cooling water applications where abrasion and mild chemical exposure occur. The internal fabric reinforcement is polyester or aramid, layered to manage tensile stress during compression and extension. The joint does not include internal liners unless specified, making it suitable for clean fluids but not for abrasive slurries without additional protection. Typical service life under normal conditions exceeds 8 years, depending on cycle frequency and media compatibility.

This joint is commonly purchased by engineering contractors for power plants, chemical processing facilities, and municipal water systems in Asia and the Middle East. Buyers require it for pump discharge lines, cooling loops, and sewage transfer systems where rigid piping would fail due to thermal stress. Trade terms are typically FOB Qingdao or Shanghai, with minimum order quantities starting at one unit for custom orders. Packaging includes wooden crates with moisture barriers and labeling per ISO 7010. Lead time is 4 to 6 weeks after confirmation of technical drawings and flange facing details.

Beijing Zhonghaiwei Environment Engineering Co. Ltd. is registered in Zhengzhou, Henan Province, and operates as a manufacturer of rubber expansion joints for industrial piping systems. The company holds a harbor trust tier, indicating verified business registration and physical address, but no public certifications or third-party audit reports are listed. Their product focus is on custom-engineered joints for large-diameter applications, particularly in power and chemical sectors. The listing shows no response rate or average response time, suggesting limited direct buyer engagement on the platform.

The company does not claim production capacity, workforce size, or export history. There is no mention of ISO certifications, laboratory testing facilities, or client references. The available information confirms only their location and product category. Buyers should treat this as a manufacturer with documented address verification but unconfirmed technical validation. Any claims about material compliance or performance beyond the listed specifications must be confirmed directly with the supplier before order placement.