人人草人人做人人爱,中文字幕人妻无码系列第三区,亚洲综合av在线在线播放,8av国产精品爽爽ⅴa在线观看,亚洲日韩v无码中文字幕,丁香花在线观看免费观看图片,国产青榴视频在线观看,日韩人妻无码一区二区三区久久99,精品精品国产高清a毛片,色婷婷狠狠久久综合五月

<menu id="ky22g"></menu>
<ul id="ky22g"><pre id="ky22g"></pre></ul>
<ul id="ky22g"><pre id="ky22g"></pre></ul>
  • <blockquote id="ky22g"><tfoot id="ky22g"></tfoot></blockquote>
  • <ul id="ky22g"><pre id="ky22g"></pre></ul>
    Welcome to Handan Jinggong construction anchor Manufacturing Co., Ltd! Hotline:+86-13932093786
      Delivery guarantee  Exchange guarantee  

    What is heavy duty self cutting mechanical anchor bolt?

    Clicks:31602021-01-09 15:01:16 

    What is heavy duty self cutting mechanical anchor bolt?
    Characteristics of self undercutting mechanical anchor bolt?
    1. It has good bearing capacity.
    2. It has the function of cutting into the substrate by itself under the action of torsion.
    3. There is almost no expansion stress in the natural environment, which meets the requirements of different buried depth.
    4. It is suitable for fixing all kinds of angles, including head elevation, small margin and small spacing.
    5. Professional, scientific and rigorous design ensures effective and safe pull-out strength and shear resistance.
    What kind of grade should be chosen for self cutting anchor bolt?
    In the expression of anchor bolt, we can often hear the words of grade 5.8 and grade 8.8. So what do these grades mean?
    According to GB / t3098.1-2000, the performance grades of anchor bolts are divided into 4.8, 5.8, 6.8, 8.8, 10.9 and 12.9, and the commonly used ones are 5.8 and 8.8. So what do these levels mean? How to choose?
    Grade 6.8 means that the standard value of tensile strength is 600MPa and the standard value of yield strength is 480mpa. Because its elongation does not meet the standard of 8% in steel structure design code, it is not recommended.
    For 10.9 and 12.9 grade high-strength bolts, it is generally not recommended to use, because the hardness of high-strength bolts is very high after heat treatment, and the later surface anti-corrosion treatment increases the probability of hydrogen embrittlement.
    Grade 8.8 means that the standard value of tensile strength is 800MPa and the standard value of yield strength is 640mpa. The anchor bolt with this strength has the highest utilization rate and cost performance
    【Responsible Editors:(Top) Return to the top of the page

    Next article:Do you know how to distinguish planting technology, chemical anchor bolt, expansion bolt and mechanical bolt?

    Last article:Seiko interprets what is a car repair gecko for you

     +86-400-021-5595
    About

    COMPANY PROFILE
    CULTURE
    CASES
    Product

    Wedge Anchors
    Chemical anchor bolt
    Casing gecko
    Three, four geckos
    Stainless steel series
    Expansion series
    Contact us

    Address: Southwest Industrial Park, Yongnian District, Handan City, Hebei Province
    Contact: manager Du
    Mobile: +86 13932093786
    Email: hdjinggong@aliyun.com
    Scan, visit mobile phone station

    Scan, visit mobile phone station

    Scan and add wechat communication

    Scan and add wechat communication

    Copyright ? 2020 Handan Jinggong construction anchorage Manufacturing Co., Ltd All rights reserved.  
      站點地圖
    久久精品国产精品亚洲色婷婷| 欧美mv日韩mv国产网站| 日韩福利一区| 国产精品国产自线在线观看| 91丨九色丨蝌蚪最新地址| 久久精品国产久精国产| 国产99久久久国产精品~~牛| 久久久一本精品99久久精品66 | 99久久无码一区人妻| 中文字幕无码不卡一区二区三区| 欧美激情精品久久| 免费看成人aa片无码视频羞羞网| 18成禁人视频免费网站| 久久成人麻豆午夜电影| 老少配老妇老熟女中文普通话| 老司机亚洲精品影院| 久久精品国产99国产精品亚洲| 精品人妻少妇一区二区三区在线| 午夜久久久久久禁播电影 | 日韩av在线天堂| 国内精品久久久久久久97牛牛| 国产精品扒开腿做爽爽爽视频| 日本护士╳╳╳hd少妇| 91精品国产免费网站| 麻豆国产AV超爽剧情系列| 曰的好深好爽好紧的视频| 精品国产一区二区三区吸毒| 奶头好大揉着好爽GIF动态图| 国产在线视频主播区| 亚洲小说乱欧美另类| 鲁大师在线影院免费观看| 日本极品少妇videossexhd| 精品国产乱码一区二区三区 | 日韩日韩日韩日韩日韩日韩日韩| 噜噜噜亚洲色成人网站| caoporn免费视频国产| 久久精品国产亚洲av麻豆| 99精品视频在线观看免费| 久久久久久成人毛片免费看| 国产裸体xxxx视频| 精品视频无码一区二区三区|
    在線客服
    熱線電話
    13932093786

    微信公眾賬號
    邯鄲市精工建筑錨固制造有限公司,車修壁虎,化學(xué)錨栓,套管壁虎,三片、四片壁虎,不銹鋼系列