Profile: Specialty Conduit & Manufacturing LLC. manufactures 10 ft A-53 hardware pipe for the plumbing industry and the left-right threaded products. We offer welded pipe nipples, hydronic manifolds and custom expansion-joints for fiber optic installations & running thread. We are capable of threading both steel and aluminum pipe in trade sizes 1/8″-6″ diameter in any lengths up to 10 ft. We produce UL listed special radius elbows for the electrical industry in trade sizes ½″–6″ diameter up to 60 in. radius.