First single-tube is a metal tube made of high-resistance alloy wire housing mounted for heating materials, electric wire around the filled and compacted, have good insulating properties, high thermal conductivity with high purity magnesium oxide as the filler material, the product with power, high thermal efficiency, fast heat dissipation, commonly used in plastic packaging, small mold heating, analytical instruments, cigarette industry, the footwear industry, semiconductor eutectic welding, casting, heat input channel, and no runner injection, various and other gas expansion cooling effect when heated. Voltage can be designed for 12-440V, power is 50W-20KW, materials are SUS304, SUS321, 840,800, Ti titanium. Technical parameters 1, electric tube end-use conditions: mold heating. 2, electric tube pipe: SUS321 seamless. 3. Surface treatment: polishing. 4, electric tube diameter: Φ6.0 ~ Φ25.0. 5, electric heating pipe sealing Style: GLASS (glass) sealed, RTV. 6, the electrical performance: in line with national standards