
Sdsx Ductile Cast Iron Grooved Fitting/Couplings with FM, UL. FM and UL Certified: Product holds FM and UL certifications for reliability and safety compliance. Ductile Iron Housing: Constructed from ASTM A-536 grade 65-45-12 ductile iron for superior strength. High Pressure Rating: Designed for working pressures up to 300 PSI (2.07 MPa) across all sizes. Multiple Gasket Options: Available with EPDM, Silicon Rubber, or Nitrile Rubber to suit various fluids. Wide Size Range: Covers nominal sizes from 1 inch to 12 inch for diverse piping needs. Corrosion Resistant Coating: Standard red/orange paint with optional hot-dipped or electro-galvanized finishes. Heat-Treated Bolts: Bolts and nuts are heat-treated plated carbon steel meeting Grade 8.8 standards. OEM and ODM Services: Custom manufacturing services available for branded and design-specific requirements.