Import Cast Iron Socket Pipe Fittings For Pvc Pipeline — Buy in wholesale FOB from Supplier in China

Cast iron socket pipe fittings for PVC pipelines from Cangzhou Doushan are manufactured from ductile cast iron conforming to GGG50 or QT500-7 specifications, ensuring high tensile strength and impact resistance. These fittings are designed for direct mechanical connection to PVC pipes in pressurised and gravity-flow systems, with socket dimensions matching standard PVC pipe outer diameters for seamless integration. The material composition meets ISO 2531, EN545, and EN598 standards, with wall thicknesses calibrated to handle operational pressures up to 16 bar in water supply and sewer applications.

The fittings are produced using sand casting and centrifugal processes, resulting in uniform wall density and minimal porosity. Surface finish is typically machined to remove flash and ensure clean seating against PVC pipe ends. While the listing confirms compliance with ISO 2531 and EN545, it does not specify whether fittings are internally coated or treated for corrosion inhibition - this is typical in municipal-grade ductile iron fittings, where epoxy or bituminous linings are common in aggressive soil or water conditions. The material grade QT500-7 offers a minimum tensile strength of 500 MPa and elongation of 7%, making it suitable for seismic zones and high-vibration environments.

These fittings are primarily purchased by civil engineering contractors, municipal water authorities, and infrastructure developers in Southeast Asia, the Middle East, and Latin America. Buyers typically order in full container loads, with packaging in wooden crates or bulk pallets secured with steel strapping. Lead times are not stated but are commonly 30 to 45 days after deposit. Payment terms referenced include 30% advance by TT, with balance against shipping documents. The fittings are not designed for direct burial without protective wrapping, and joint integrity should be verified with hydrostatic testing before commissioning.

Cangzhou Doushan Machinery Manufacture Co., Ltd. is based in Botou, Cangzhou, Hebei Province, China, and operates as a manufacturer of ductile iron pipe fittings and valves. The company’s trust tier is listed as harbor, indicating it has passed basic platform verification for business registration and production capability. There is no public information on annual production volume, employee count, or export history. The listing confirms the use of ISO-certified casting processes but does not state whether the facility holds in-house metallurgical testing or third-party lab accreditation.

The supplier does not claim to serve specific international clients or list past project references. Response rate and average response time are not recorded, suggesting limited or no active communication channels on the platform. The company’s focus appears to be on production rather than export support, and buyers are advised to clarify logistics and documentation requirements directly. No claims are made regarding design engineering, custom fabrication, or after-sales technical support.