国产三级成人,伊人久久久久久久久久,热久久这里是精品6免费观看,国产综合亚洲欧洲区精品无码,一级毛片免费播放视频,免费福利视频网站,国产小视频在线高清播放,丝袜国产一区

FRP manhole cover

Products > FRP Manhole cover > FRP manhole cover

FRP manhole cover

This product uses unsaturated polyester resin as the main chemical raw material and is made by heating and pressing. It has good impact strength and corrosion resistance,It has better technical performance and practicability than similar products (such as cast iron and cement manhole covers), Widely used in manhole covers of urban road inspection wells, water grates...

  This product uses unsaturated polyester resin as the main chemical raw material and is made by heating and pressing. It has good impact strength and corrosion resistance,It has better technical performance and practicability than similar products (such as cast iron and cement manhole covers), Widely used in manhole covers of urban road inspection wells, water grates, communication inspection wells, natural gas pipelines, inspection wells of chemical bases, Widely used in manhole covers of urban road inspection wells, water grates, communication inspection wells, natural gas pipelines, inspection wells of chemical bases, At the same time, because the product has no recycling value, it fundamentally solves the danger to pedestrians and vehicles caused by theft.

  Manhole Cover Specifications:

  According to the carrying standard, it can be divided into three types: P-common type (10T), Z-heavy type (24T), TZ-extra heavy type (36T), etc.

  Specifications: P type: Φ800x45, Φ730x45, Φ700x40, Φ600x40; Z type: Φ800x60, Φ700x60, Φ650x60, Φ600x60; TZ type: Φ800x90, Φ730x85, Φ700x80.

  Rain grate specifications: □750x450x70mm □750x450x40mm.

  Scope of application:

  This product is suitable for motor vehicle lanes, municipal passages, communications, power supply and other projects, suitable for urban road underground pipeline inspection wells, sewage wells, communication wells, cable wells, landscaping wells, natural gas wells, chemical wells, etc, It fully complies with the load-bearing standard of "Cast Iron Manhole Cover". In the case of missing cast iron manhole cover, it can quickly repair the "black hole" and block the possibility of repeated theft. The construction difficulty and cost brought by exchanging the whole manhole cover and seat in a large range are greatly reduced. Classify and color according to the project setting requirements of each city.

主站蜘蛛池模板: 亚洲成a∨人片在线观看无码| 国产精品国产三级国产av主播| 国产露脸150部国语对白| 婷婷综合缴情亚洲五月伊| 最大色网男人的av天堂| 曰本极品少妇videossexhd| 欧美性猛交xxx嘿人猛交| 国产在线一区二区三区| 中文有码亚洲制服av片| 国产乱子伦在线观看| 狠狠亚洲超碰狼人久久老人| 亚洲熟妇中文字幕五十中出| 秋霞日韩一区二区三区在线观看| 亚洲成片在线看一区二区| 国产美熟女乱又伦av果冻传媒| 日本一本正道综合久久dvd| 日本怡春院一区二区三区| 夜夜躁日日躁狠狠久久av| 亚洲人成网站在线观看播放不卡| 国模沟沟一区二区三区| 日韩av在线不卡免费| 日韩av在线播放天堂网| 精品视频在线观看一区二区三区| 26uuu另类亚洲欧美日本| 最新国产美女一区二区三区| 中文字幕亚洲一区二区va在线| 国内精品久久毛片一区二区| 亚洲最大福利视频网| 五月综合激情婷婷六月色窝| 99re8精品视频热线观看 | 国内视频一区| 中文综合在线观| 成人在线91| 一个人看的www免费视频中文| 91精品国产91| 国精品无码人妻一区二区三区| 97se亚洲国产综合在线| 大乳丰满人妻中文字幕韩国| 精品乱子伦一区二区三区| 2021国产最新无码视频| 6699嫩草久久久精品影院|