In natural gas treatment plant, generally used is resistance heating method for heat treatment in welding lines of equipment and pipeline systems.

在天然气处理厂内对设备和管道系统焊缝的热处理一般采用电阻加热法。

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Three kinds of high temperature resistance furnaces with different heating method are designed, that is, outside-wall heating, inside-wall heating and double heating high temperature furnace.

设计了三种不同加热方式的高温电阻炉，即外壁加热、内芯加热和双重加热高温炉。

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This test method covers the determination of the change of resistance with temperature of metallic materials for electrical heating, and is applicable over the range of service temperatures.

本试验方法适用于电热合金随温度变化的测量，亦可用于超过电热合金使用温度范围的情况。

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