
UL/FM Black Grooved Rigid Couplings. UL & FM Certified: Products certified by UL and FM for fire protection and industrial safety standards. Ductile Iron Material: Constructed from ASTM A536 Grade 65-45 ductile iron for high strength and durability. Customizable Design: OEM and ODM services available with customized types, finishes, and dimensions. Wide Pressure Range: Supports pressure rates from 300 PSI to 750 PSI (1.6MPA to 2.5MPA). Versatile Applications: Suitable for fire fighting, water, oil, gas, and industrial pipeline systems. Multiple Finishes: Available in Paint, Epoxy, or Galvanization with various color options. Fast Delivery: Standard delivery time is 30 days after order confirmation. Free Samples: Free samples are available upon request for product evaluation.