... quality and competitive price 4)Concentric Reducer Material:1)FM and UL approved 2)All kinds of sizes are allowed 3 ... ,cap,mechanical tee, mechanical cross, reducer etc. 2. Certificate: FM/UL approved3. Pressure:300/2.074. Painting: Epoxy ,galvanized,paint, ... ,cap,mechanical tee, mechanical cross, reducer etc. 2. Certificate: FM/UL approved3. Pressure:300/2.074. Painting: Epoxy ,galvanized,paint, ...