Wheatland Tube/JMC Steel Group, Sharon, Pa., has added three new sales agent organizations to its steel conduit and fittings network. The Ryall Group, Lakewood, Colo.; will cover Colorado and Wyoming; Tower Sales, Swanee, Ga., will represent Wheatland's conduit and fittings products in Georgia, Alabama and the Florida panhandle; and M. Lau Co., Kaneoke, Ha., will handle the Hawaiian Islands.