The typical structure of a single-ended tube is generally composed of five key parts: insulator, sealing material, lead-out rod,filler, 电热丝, metal sheath tube and terminal. The spiral-shaped heating wire and the lead-out rod are located at the center of the metal sheath tube, and the manufacturing process is extremely meticulous. 第一的, carefully thread the spiral heating wire into seamless steel pipes, copper pipes or aluminum pipes. 然后, through a multi-tube filling machine, evenly fill the oxidizing medium that is both insulating and has good thermal conductivity. Common ones include crystalline magnesium oxide powder, and alumina or clean quartz sand can also be selected. 下一个, the pipe diameter is reduced by using a pipe shrinking machine to make the oxide medium denser

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