Hot Sale UL FM Fire Fighting Pipes Protection System Fire Sprinkler System Stainless Steel Fitting Braided Flexible Fire Hose. FM & UL Certified: All products are FM approved and UL listed for fire protection systems. Customizable Materials: Stainless steel available in 304, 304L, 316, and 316L grades. Seismic Shock Absorption: Stainless steel hose absorbs seismic shock to maintain system operation during earthquakes. Easy Installation: No special tools required; uses simple wrench and screwdriver for quick setup. Leak Tested: 100% leak tested prior to leaving the factory for safety assurance. Flexible Re-shaping: Hose can be re-shaped and relocated without draining the system. Cost Saving Design: Unique connection mode saves time and cost compared to traditional hard pipe systems.