MS Ducts are fabricated from hot rolled or cold rolled Black steel sheets with fully welded construction to achieve leak proofing. MS ducting is made from the high quality mild steel which contains 0.16-0.29% carbon. This composition ensures that the material is neither ductile nor brittle. MS ducts are mainly used for the kitchen exhaust because of its inherently fire resistant characteristics. The fire resistance characteristics of MS ducts can be further enhanced by Fire Rated Spray Coat or painted with multi- ple coats of Red Oxide along with Rock wool insulation conforming to NFPA 96 Standards.