Primary Material: Cast from high-quality ductile iron.
Spheroidization Treatment: Graphite is uniformly distributed in spherical form, significantly enhancing mechanical properties.
Performance Advantages: Combines toughness with rigidity, offering superior impact resistance, deformation resistance, and settlement resistance compared to gray iron.
Forming Process: Centrifugal/sand casting ensures a dense structure.
Quality Assurance: Free from sand holes and gas pores, delivering reliable pressure resistance and long-lasting durability.
One end features a socket with a flared port and a dedicated sealing groove on the inner wall for embedding the sealing ring. The other end is a spigot with a tapered chamfered edge, facilitating smooth insertion into the corresponding socket. It achieves a tight fit with both the socket's inner wall and the sealing ring.
From socket to spigot, the pipe diameter smoothly tapers axially without abrupt steps. Both inner and outer walls maintain continuous streamlined surfaces. The overall short-pipe form ensures compact structure for installation in confined spaces.
The socket interior features a positioning step to control insertion depth and ensure proper connection. The spigot surface is smooth and flat, precisely matching the socket groove to prevent misalignment that could compromise sealing.
A pre-installed elastic seal ring (typically made of weather-resistant materials like EPDM rubber) is positioned within the socket's sealing groove. The seal ring conforms to the groove walls. Upon insertion of the spigot, compression between the socket and spigot creates an elastic self-seal, blocking media leakage pathways. The seal ring resists acids and alkalis, withstands aging, and tolerates temperature variations, making it suitable for diverse fluid conditions.
As a flexible socket joint, it permits angular deflection and minor axial expansion within specified limits. This design absorbs stresses from foundation settlement, thermal expansion/contraction, seismic activity, or fluid impact, preventing joint tearing and pipe rupture while enhancing overall pipeline network stability.
Internal and External Anti-Corrosion Treatment
Primarily utilizes cement mortar lining, epoxy resin, or polyurethane coatings to form a smooth, dense protective layer. This reduces inner wall roughness, minimizes scaling and corrosion, enhances fluid conveyance efficiency, and extends the service life of the pipe.
Composite protection achieved through zinc spraying, epoxy coal tar coating, polyolefin coating, or specialized anti-corrosion paint. Joint areas (socket outer edges, spigot ends) receive consistent anti-corrosion treatment with the pipe body, ensuring full-surface protection against soil acidity/alkalinity and electrochemical corrosion, and adapting to diverse buried soil environments.
Ideal for municipal water supply and drainage, fire protection, industrial water conveyance, wastewater treatment, stormwater drainage, and other pressurized and non-pressurized pipeline systems. Particularly well-suited for buried pipeline networks in unstable geological conditions requiring frequent adaptation to foundation settlement or thermal expansion/contraction. Compatible with ductile iron straight pipes, valves, water meters, and other fittings from the same series for flexible combinations, enabling seamless diameter transitions within pipeline networks.
Clean the socket groove, spigot surface, and sealing ring. Remove sand particles, oil stains, and rust to ensure clean sealing surfaces.
01
Fully embed the sealing ring into the socket groove. Press firmly to ensure tight contact without twisting or misalignment.
02
Maintain coaxial alignment between fittings and straight pipes. Using specialized tools (e.g., hoists, jacks), uniformly push the spigot into the socket until it contacts the locating step. Avoid impact damage to joints or gaskets through excessive force.
03
Inspect for uniform circumferential clearance at the joint to confirm no leakage risks. Flexible characteristics permit minor angular adjustments during installation to accommodate slight pipeline misalignment.
04
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