熟女乱乱熟女乱乱亚洲,一区二区三区熟妇人妻18,国产av精品久久一区二区,精品亚洲乱码一区二区三区,丝袜美女美腿一区二区,日韩精品高清不卡一区二区三区,日韩人妻有码中文字幕,国产精品女同二区五区九区,邻居少妇张开腿让我爽视频,91青青草手机在线视频

Ground anchor cover structure

地錨蓋結構
Ground anchor cover structure


一、Ground anchor cover structure


Product name

Model and specification

gcometry

Net opening mm

material quality


Ground anchor cover

FD/DM-300 

Model and specification

Round manhole cover

φ275.5

Well seat:nodular cast iron

Well cover: aluminum alloy


Performance parameters and load test requirements

Static load test: A rubber block with a diameter 25 millimeters smaller than the overall outer diameter of the anchor cover, a thickness of 25 millimeters, and a Shore hardness of 55A-70A is used. It is placed on the well cover that has been matched with the anchor cover and well seat, and then placed under the testing machine. A static load of 31.7 Kg/cm is applied through the rubber block. The pressurization speed shall not exceed 4536Kg/min. Under a static load of 31.7Kg/cm, the anchor cover cannot undergo permanent deformation, and cracking of the material itself and surface coating, or damage to the anchor well seat, are considered unqualified.


Location and function of use

The ground anchor cover is used to protect the anchor bolts in the anchoring area of aircraft parking positions, making the road surface smooth and beautiful, and achieving the purpose of easy cleaning and snow removal.

Design advantages

1. The manhole cover base adopts external support, with low frame pressure.

2. It can be firmly connected to steel bars to improve its service life.



欧美色aⅴ欧美综合色| 97人妻中文字幕总站| 亚洲av色精品国产一区二区三区| 亚洲精品国产亚洲av| 亚洲悠悠色综合中文字幕| 欧美丰满熟妇xxxx性ppx人交| 亚洲日韩av一区二区三区中文 | 国产熟女精品一区二区三区| 久久久www免费人成精品| 亚洲av之男人的天堂网站| 日韩成人无码一区二区三区| 久久久久久久久888| AV无码免费不卡在线观看| 在线观看国产精品自拍| 天堂精品人妻一卡二卡| 日本精品久久不卡一区二区| 亚洲精品国产精品乱码在线观看| 亚洲色大成网站www永久网站| 国产精品无圣光一区二区| 大地资源网最新在线播放| 久久麻豆精亚洲av品国产精品| 亚洲人妖女同在线播放| 亚洲狠狠久久五月婷婷| 亚洲毛片在线免费视频| 国产精品无码av无码| 国产精品免费精品自在线观看| 亚洲色大成网站www尤物| 国产目拍亚洲精品区一区| 国产一区二区三区18p| 青青草在线免费视频播放| 国产精品久久成人网站| 香蕉视频在线精品视频| 97色综合| 三级黄片一区二区三区| 精品中文字幕精品中文字幕 | 少妇性l交大片免费1一少| 一区二区三区国产高清视频| 国产亚洲av另类一区二区三区| 日韩少妇内射免费播放18禁裸乳| 51国偷自产一区二区三区| 国产精品厕所|