Cable inner end must use steel nut cap. Lead sealing is required for the sealing between the cable inner head and metal sleeve, which has a good sealing property.
电缆内端头应使用钢制封帽，与金属套的密封必须采用铅封，密封性能良好。
The casing pipe is mainly used to solve present technical problems, such as complicated technical process for cable end sealing.
它主要是解 决现有缆线端头密封的工序复杂等技术问题。
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