We offer a wide variety of heavy-duty protection tubes, including Inconel, Stainless Steel, Silicon Carbide, and Silicon Carbide molded to steel.  Standard diameters run from half inch NPT to one inch NPT with lengths up to 60 inches are available upon request.  Other lengths, diameters, and material types of protection tubes are available. Information about corrosion resistance and melting points of different materials can be found here. All tubes can be supplied open both ends (OBE) or closed one end (COE).