Ductile Iron Grooved Rigid Coupling

Ductile Iron Grooved Rigid Coupling. FM/UL Certified Quality: Ductile iron couplings with FM, UL, CE, and ISO certifications for fire control and industrial use. Fast Installation: Installs 3-4 times faster than welded joints using only a wrench, no flame or torch required. Leak-Free Seal: EPDM rubber gasket creates a secure, pressure-responsive seal that tightens under line pressure. High Strength Material: Made from ASTM A536 Ductile Iron Gr.65-45-12 with 65,000 psi tensile strength and 12% elongation. Easy Maintenance: System allows easy access for cleaning and expansion by removing just a few bolts. Custom Surface Options: Surface treatment is customizable including Painted, Galvanized, Epoxy, and Dacromet finishes. Professional OEM/ODM: We welcome OEM and ODM orders with experienced engineering team and state-of-the-art equipment. Strict Quality Control: Full series of inspections including leak testing, spectrometer analysis, and dimension checks.