FDP2-J4型高温恒功率电热带，其工作原理，产品结构及应用与FDP2-J3型恒功率电热带相同，所不同的是其绝缘材料采用了耐高温防水玻璃纤维和耐温高于F46的PFA氟塑料，流体维持温度可达180℃～205℃，它尤其适合沥青、重粘油管线伴热，该产品可用于工厂一区、二区爆炸场所。

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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