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The tubular electrical heater is added heating component in the metal tube, and is closely filled with good heat resistance, good thermal conductivity and good  insulation of crystalline magnesium oxide powder in the void, then the other process treatment to fiish it. It has the advantages of simple structure, high mechanical strength, high thermal efficiency, safety and reliability, convenient installation, long service life, etc.. Widely used in a variety of niter slot, water tank, oil tank, acid-base tank, the fusible metal melting furnace, air heating furnace, oven, hot pressing model device.

Instructions for use:

1 Operation voltage should not exceed 10% of the rated working voltage ;

2 The wire position should be between heating layer and insulation layer, the outer shell should be effectively grounded;

3 Components should be put in dry place, if the long-term placement, insulation resistance is lower than 1M Ω, you can bake it for 5-6 hours in 200 ℃ oven , then it can return to normal.