Import Dn900 Flanged Metal Expansion Joint — Buy in wholesale FOB from Supplier in China

The DN900 flanged metal expansion joint is a heavy-duty industrial component designed for large-diameter piping systems that require thermal expansion compensation. It features a flanged loose joint with a transmission screw mechanism to manage axial movement and angular deflection, as specified in the product data. The joint is constructed from carbon steel ASTM A105 or stainless steel 304/316, with flanges matching standard pressure ratings for industrial piping. This design allows for controlled displacement during operation without transmitting axial thrust to connected equipment such as pumps or valves.

The joint is built to G/B standards, with internal components engineered to handle pressure cycles and vibration common in power plants, petrochemical plants, and district heating networks. The short-pipe flange component permits on-site adjustment during installation, ensuring alignment without stress on adjacent fittings. Material selection follows industry norms for corrosion resistance and mechanical strength, with 316 stainless steel preferred in aggressive environments such as wastewater or chemical processing. The transmission screw is typically made of hardened alloy steel to withstand repeated adjustments under load.

This expansion joint is primarily purchased by engineering contractors for municipal infrastructure, oil and gas facilities, and industrial plant upgrades. Buyers typically require delivery in bulk for large-scale pipeline projects, with packaging in wooden crates for ocean freight. The product is not sold in retail quantities; minimum order quantities are negotiated directly with the supplier. Trade terms commonly include FOB Shanghai or CIF destination ports, with payment via letter of credit for international buyers. Lead times are typically 4 to 8 weeks after order confirmation, depending on material availability and production scheduling.

Beijing Zhonghaiwei Environment Engineering Co. Ltd. is a manufacturer based in Zhengzhou, Henan Province, China, with a verified harbor trust tier and no public response rate data. The company specializes in industrial pipeline components, particularly dismantling joints and expansion fittings for heavy infrastructure applications. Their production capabilities include flange welding, machining, and hydrostatic testing, as referenced in their product documentation. No information is available regarding company size, revenue, or export history beyond the product listing.

The supplier does not claim ISO certification, third-party audits, or client references. Their product is marketed through direct B2B channels and appears to serve industrial buyers in Asia, the Middle East, and Africa. There is no indication of in-house R&D or proprietary design features beyond adherence to standard G/B specifications. The company does not appear to offer customization beyond material grade selection or flange rating, and all technical data is consistent with generic industry practice.