FM UL Grooved Pipe Clamp Fitting Coupling Fire Protection Plumbing Accessory Ductile Cast Iron Rigid Flexible Coupling

FM UL Grooved Pipe Clamp Fitting Coupling Fire Protection Plumbing Accessory Ductile Cast Iron Rigid Flexible Coupling. Made of high-grade ductile iron QT450-12, high strength and good toughness, anti-impact and non-deformable. Fully certified with CE, ISO, FM & UL, compliant with international fire and water supply standards. Equipped with premium EPDM gasket, excellent sealing performance, zero leakage under high pressure. Grooved connection design, no welding required, easy and fast installation to save construction time. Internal and external anti-corrosion coating, acid and alkali resistant, long service life. Flexible connection structure, good shock absorption and noise reduction effect. Complete size range from DN25 to DN300, custom service available per drawings. Direct manufacturer with strict quality control, stable quality and timely delivery.