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Ductile Iron Grooved Fittings Couplings Supplier FM, UL. 10-Year Warranty: Comprehensive 10-year warranty coverage for peace of mind. FM & UL Certified: Products certified by FM and UL for high safety standards. Ductile Iron Material: Housing made of ASTM A-536 ductile iron grade 65-45-12. 300 PSI Pressure Rating: Designed for working pressure up to 300 PSI (2070 kPa). Customizable Coatings: Options include epoxy, painted, galvanized, and Dacromet. Multiple Gasket Options: Choose from EPDM, Silicone, or Nitrile rubber gaskets. 24-Hour After-Sales: Dedicated 24-hour after-sales service support available. OEM/ODM Service: Custom manufacturing services available for brands.