FDP2-J4型高溫恒功率電熱帶，其工作原理，產品結構及應用與FDP2-J3型恒功率電熱帶相同，所不同的是其絕緣材料采用了耐高溫防水玻璃纖維和耐溫高于F46的PFA氟塑料，流體維持溫度可達180℃～205℃，它尤其適合瀝青、重粘油管線伴熱，該產品可用于工廠一區、二區爆炸場所。

FDP2-J4 Hi-temp heating cable properties is similar to FDP2-J3,The difference is that the insulation material is Hi-temp water proof fiberglass and PFA fluoropolymer. It is suitable for industrial application where temperature excursions to 205℃ or process temperature maintenance to 180℃～205℃.Particularly use in maintenance temp such as pipeline of Pitch,crude oil.It is applied in ordinary（non-hazardous）areas and division 1,2 hazardous（mixed gas）Class locations.

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