Quick view Pipe Riser Clamp, 450 deg F, Carbon Steel, Galvanized, Domestic Anvil's #261 carbon steel riser clamps are available in a wide range of sizes: 3/4 in through 24 in and can be furnished plain, galvanized or epoxy-coated. They are designed for the support of stationary steel pipe risers, cast iron pipe or conduit (but... Log in for pricing Compare