... inspection,maintenance,relocation Commercial Ceiling Fire Sprinkler Hose FM Approved1.Stainless steel bellows, Braided, Welded2.Used for building Ceiling#we ... also have stainless sprinkler hose used for clean room ... ://www.interlv.com. We sincerely wish to cooperate with you. Welded Stainless Steel Fire Sprinkler Hose with fittings