工艺：防爆式加热管，它是由防爆加热管与防爆接线盒配合而成。
Technology: Ex-heating tube, which is heated by the blast and explosion-proof box with wiring from.
伴热电缆的交叉：在易燃易爆场合必须采用配套的防爆直线型接线盒，一般场合也可以采用绞接或焊接。
Heating cable cross: must be used in explosive situations linear supporting proof junction box, the general situation can also be used splice or welding.
钢管不得直接进入接线盒，应通过防爆接头连接。
The steel pipe should not enter the junction box directly, and it should be connected to the box with explosion proof tie-in.
钢管不得直接进入接线盒，应通过防爆接头连接。
The steel pipe should not enter the junction box directly, and it should be connected to the box with explosion proof tie-in.
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