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Our Steel Clamp with Rubber Lining is a robust pipe coupling designed for quick, reliable connection of fire protection, plumbing, and industrial pipes. Constructed from high-strength cast iron/ductile iron with a durable EPDM rubber lining, it ensures leak-proof sealing, vibration damping, and corrosion resistance across demanding applications.
Basic Information
Item | Specification |
Material | Body: Ductile Cast Iron (GGG40/50) / Carbon Steel; Gasket: EPDM Rubber |
Color | Red (Epoxy Coated) / Customizable |
Nominal Diameter | DN25 – DN300 (Customizable) |
Working Pressure | 1.6MPa – 2.5MPa (16–25 bar) |
Temperature Range | -40°C ~ 120°C (EPDM Gasket) |
Connection Type | Grooved Pipe Coupling |
Surface Treatment | Epoxy Coating / Galvanized |
Gasket Material | EPDM (NBR/Silicone available upon request) |
Standards | UL/FM/CE/GB/T 3287 compliant (customizable) |
Application | Fire Protection, Plumbing, Industrial Piping, HVAC |
Performance
Leak-Proof Sealing: The EPDM rubber lining conforms tightly to pipe surfaces, creating a reliable, flexible seal that prevents fluid or gas leakage even under pressure fluctuations.
Vibration & Shock Absorption: The rubber lining dampens mechanical vibration and reduces noise, protecting pipes and joints from fatigue damage caused by water hammer or equipment operation.
High Pressure Resistance: Designed to withstand working pressures up to 2.5MPa (25 bar) (depending on size), suitable for fire protection systems, industrial pipelines, and municipal water networks.
Wide Temperature Range: The EPDM gasket operates reliably from -40°C to 120°C, maintaining sealing performance in extreme temperature conditions.
Quick Installation: The split-ring design allows for fast, tool-efficient installation without the need for welding or threading, reducing labor time and costs.
Corrosion & Aging Resistance: The epoxy-coated steel body and EPDM lining resist corrosion, UV radiation, and chemical degradation, ensuring long service life.
Application
Fire Protection Systems: Used to connect steel pipes in sprinkler systems, fire hydrant networks, and fire suppression pipelines.
Plumbing & Municipal Water Supply: Couplings for potable water pipelines, sewage systems, and drainage networks.
Industrial Piping: Connections for chemical processing, HVAC, and oil/gas pipelines (compatible with non-aggressive fluids).
Mining & Construction: Vibration-resistant pipe joints for heavy-duty construction and mining equipment.
Marine & Offshore: Corrosion-resistant couplings for marine plumbing and offshore facilities.
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Founded in 2012, We are located in the beautiful city----Qingdao China,IS09001:2015 certificated.
No. 306, 3rd Floor, Building 4, No. 6, Changcheng South Road, Chengyang District, Qingdao City