红桃影视成人免费_中国按摩xxxx做受a_377人体裸体露私图片_久久亚洲AV永久无码精品_亚洲成国产人片在线观看_国产一a在一片一级在一片

Types of power pipeline products and characteristics of various power pipes (4)

2025-03-21

(8) PVC honeycomb pipe

PVC honeycomb pipe is a honeycomb plastic pipe composed of several hexagonal children. The cross-section shape is like a honeycomb, and it adopts a reasonable mechanical structure of one-body porous honeycomb, so that the pipe is 10-100 times higher than ordinary plastic pipes. The most commonly used is the seven-hole honeycomb pipe. The inner diameter of the hole is 33mm, the length is 6000mm, and the allowable deviation is 0-30mm. It has the characteristics of acid resistance, aging resistance, flame retardancy and insulation properties. Its use temperature is -20 degrees to 40 degrees, and it can be used in cold and summer areas. The service life is as high as 50 years.

Product features:
● 1. Strong corrosion resistance, good electrical insulation
● 2. Clear porous separation, easy and convenient threading.
● 3. The holes are closely arranged to improve the utilization rate of communication holes.
● 4. One tube is porous, the construction is convenient and fast, and the project cost is low.
● 5. Product integration structure, high strength and long service life.

Types of power pipeline products and characteristics of various power pipes (4)the1page

(10) MPP modified polypropylene (trenchless power pipe)

MPP trenchless power pipe is also known as MPP jacking pipe or torah pipe. MPP power pipe uses modified polypropylene as the main raw material, so it does not need to be dredged, excavated and damaged on the road. Construction projects such as pipelines and cables are laid in special areas such as roads, railways, buildings, and riverbeds. Compared with the traditional "trenching and buried pipe method", the trenchless power pipe project is more suitable for the current environmental protection requirements, and removes the disturbing factors such as dust king flying and traffic congestion caused by traditional construction. This technology can also lay pipelines in some areas where excavation operations cannot be carried out, such as historical site protection areas, downtown areas, crop and farmland protection areas, highways, rivers, etc. Divided into ordinary and enhanced types. The ordinary type is suitable for excavation and laying construction and trenchless crossing construction projects with a buried depth of less than 4M, and the enhanced type is suitable for projects with a buried depth of more than 4M in trenchless crossing construction.

MPP power pipe advantages:
1, Hubei MPP power pipe has excellent electrical insulation.
2, Wuhan MPP power pipe has high thermal deformation temperature and low temperature impact performance.
3, Ezhou MPP power pipe tensile and compressive performance is higher than HDPE.
4, Huanggang MPP power pipe light, smooth, friction force is small, hot melt welding butt.
5, Xianning MPP power pipe long-term use temperature - -5~ 70C.

Types of power pipeline products and characteristics of various power pipes (4)the2page

source: Hubei AD Building Materials Co., Ltd., welcome to share! Hubei Wuhan, Huanggang, Huangshi, Ezhou, Xinzhou, Jiangxia, Xianning, Xiantao, Qianjiang, Tianmen, Jingzhou, Jingmen, Yichang, Honghu, Jianli and other places MPP pipe, PVC pipe, you can contact us.


主站蜘蛛池模板: freehd1819美女| 国产精品成人3p一区二区三区 | 综合激情网激情五月 | 国产精品久久久久精女同 | 夫妻激情视频 | 综合色综合色 | av看片网站 | rrr在线观看| www.羞羞答答在线观看蜜桃臀 | 一本久久a久久精品综合 | 久久国产精品视频在线 | 欧美粗又大| 97精品国产97久久久久久免费 | 久久精品国产精品亚洲精品 | 国产毛片视频网站 | japanoldman同性老 | 亚洲成人三级 | 97精品尹人久久大香线蕉 | 天天干天天操天天操 | 成人免费黄色在线播放 | 欧美高潮喷水HD | www.色小姐com| 西西大尺度美軳人人体bt | 四虎国产成人 | 久久婷婷久久 | oldwoman孕妇喷奶水 | 黄视频www | 中文视频免费在线播放 | 四虎地址8848 | 91美女视频网站 | 美女日批视频在线观看 | 日本熟妇毛茸茸XXXXX | 国产伦精品久久久一区二区三区 | 淫视频网站 | 亚洲AV一二三区成人影片 | 佐山爱痴汉视频一区二区三区 | 日韩精品免费一区二区三区四区 | 九色porny丨首页在线 | 亚洲美女视频在线 | 天天夜综合| 成全高清免费观看MV动漫 |