h无码在线观看,夜色色综合网,日韩AV免费久久,蜜臀久久综合视频

Language:CHINESESENGLISH

Home > News > Guangzhou Steel teach you: General steel construction hole and limb protection
CONTACT US
  • Address:Pingtang Industrial District, Shipeng Village, Shishan Town, Nanhai District, Foshan City,
  • Phone:0757-81002668/0757-63323396
  • Fax:0757-81196682
  • Contact:Ben Zheng/13826981293 Kerry Lu/13751224830
  • E-mail:sbs@sbsprefabhouse.com
  • URL:http://linbaoquan.cn

Guangzhou Steel teach you: General steel construction hole and limb protection

Time:[2015-8-8]  Hits:4890

Guangzhou Steel teach you: General steel construction hole and limb protection


1, the side length or diameter of the hole should be 20cm ~ 40cm rigid protective cover plate; edge length or diameter of the hole should be 40cm ~ 150cm erection of steel scaffolding, scaffold boards paved; edge length or diameter of the hole at 150cm above Zhang set up should be a safety net dense mesh fence and added protection.
2, after the building floor hoisting steel beams, partitions should be laying safety net.
3, after hoisting steel beams surrounding floor is completed, should be set up in each limb fence, and the fence height not less than 1.2m.
4, limb scaffold erection, operating platform, network, and other security challenges in the structure should be securely fixed. Guangzhou Steel

Copyright:佛山市勝邦鋼結(jié)構(gòu)有限公司 Foshan Shengbang Steel Structure Co., Ltd. Record Number:粵ICP備13078463號
国产精品黑丝美女麻豆传媒| 久久亚洲啪| www.亚洲老熟妇.com | 麻豆日韩电影| 大黑几巴操大黑逼| 巨爆乳肉感一区二区三区在线视频| 成人无码不卡视频| 日本久久蜜桃视频免费一品道| 国产 欧美 日韩在线| 日本综合第一页| 欧美日韩一级黄片A片浏览| 一区二区不卡欧美视频| 国产做爱91麻豆| 欧美青青草原簧片| 亚洲人妻交换在线| 亚洲最大成人手机在线| 热热99久久精品亚洲| 久久艹国产| 国产剧情麻豆传煤一区二区三区| 韩国日产福利网一区二区三区| 日韩久久视频播放在线| 国产麻豆免费内射视频| 欧美一级黄片一区二区三区| 嗯~啊~好舒服~啊~视频| 啾啾黄色电影网站| 欧美一区 三区| 超碰A一区| 狼女一区二区| 久久 精品 日韩| 国产欧美日韩二区三区| j久久精品| 真人黄色片| 欧美日韩特级久久久| 亚洲高清视频中文字幕一区| 国产精品99久久国产一区| 日本精品3p视频一区二区| 日韩婷婷欧美| 欧美日韩家庭视频小说一区 | 日韩精华一区二区| 中文字幕精品精品人妻中文字幕| 天天干天天射天天色 |