Grooved Pipe Couplings and Fittings —— Rigid Coupling

Advantages

Material & Performance

High-strength ductile iron: tensile strength ≥450MPa, elongation ≥10%, impact resistance is better than ordinary cast iron, adapting to complex working conditions.

Double sealing design: EPDM rubber sealing ring combined with trapezoidal section clamp ensures no leakage under 1.6-4.0MPa pressure, temperature resistance range - 40℃~150℃.

Anti-corrosion process: Surface treated with epoxy powder or galvanized, salt spray test over 1000 hours, long-term resistance to humidity and chemical corrosion environment.

Installation

Trench-type quick connection: welding-free design, single interface installation takes only 3 minutes, saving 70% of labor costs, significantly shortening the construction cycle.

Flexible adaptation: support DN50-DN600 full specifications, adapting to the needs of different pipe diameters, reducing on-site processing.

Standard: 

Comply with FM/UL/CE requirements, the products are exported to Europe, America, the Middle East and other global markets.

Production process

Precision casting: disappearance mold casting technology is adopted to ensure the dimensional accuracy of the fittings and the uniformity of the internal structure.

Surface treatment: hot dip galvanizing + epoxy resin spraying dual technology, forming a dense anti-corrosion layer.

Strict testing: Spectral analysis, pressure test (burst pressure ≥ 8.0MPa) and salt spray test are carried out for each batch to ensure stable quality.

Application Scenarios

Fire fighting system: automatic sprinkler system, fire hydrant piping, foam fire extinguishing system.

Industrial field: petrochemical, mining, textile and other high pressure, corrosive media transportation pipeline.

Infrastructure: subway, airport, bridge and other piping projects with high seismic requirements.