久久99精品久久久大学生,亚洲欧美天堂在线,国产亚洲精品久久久久5区,99久久九九,国产99久久久国产精品成人免费 ,中文字幕av网站,久久久久免费观看

<rp id="lubqb"></rp>
<track id="lubqb"><tfoot id="lubqb"><em id="lubqb"></em></tfoot></track>

search
Hot keywords
  • Contact us
Mining optical cable 36 cores
Mining optical cables are made by inserting single-mode or multi-mode optical fibers into loose tubes made of high modulus plastic, and filling the tubes with water-resistant compounds. The center of the cable core is a phosphated steel wire or a steel wire rope extruded with polyethylene. A loose sleeve (or filling rope and signal line) is twisted around the center to strengthen the core and form a compact and circular cable core. The gaps inside the cable core are filled with water-resistant filling material, steel polyethylene bonded inner sheath, and blue flame-retardant PVC sheath to form the cable. The mining optical cable has a flame-retardant sheath, which can have a full section water-resistant structure to ensure good water and moisture resistance. The loose sleeve is filled with special grease to provide critical protection for the optical fiber.
< >
Contact us
  • Qinhuangdao Wolf Cable Co., Ltd
  • No. 4 Zhuhai Road, Shanhaiguan Economic and Technological
  • 19933636285 18833522049
  • 18833522049@139.com
Scan to follow us
泰宁县| 吕梁市| 普洱| 玉林市| 咸宁市| 河南省| 准格尔旗| 镇原县| 鄂伦春自治旗| 永兴县| 隆尧县| 金乡县| 新巴尔虎左旗| 洛隆县| 安达市| 桐庐县| 县级市| 宝坻区| 嘉峪关市| 特克斯县| 蕲春县| 定西市| 曲阳县| 太仓市| 左权县| 永新县| 裕民县| 宁城县| 东莞市| 南川市| 堆龙德庆县| 无极县| 贵阳市| 镇坪县| 虎林市| 两当县| 若尔盖县| 玉林市| 柳州市| 马山县| 大同市|