欧美精品在线视频,中文字幕台湾亚洲,可以免费观看一级欧美啪啪,91n免费处女在线破视频+进https://www.fqesyc.

Language:CHINESESENGLISH

Home > News > the construction quality steel welding acceptance of the relevant provisions
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://szcxdj.com.cn

the construction quality steel welding acceptance of the relevant provisions

Time:[2016-1-27]  Hits:4826

Guangzhou Steel tells you: the construction quality steel welding acceptance of the relevant provisions

Guangzhou Steel tells you :( a) General provisions
Carbon structural steel should be cooled to ambient temperature in the weld, low-alloy structural steel welding should be completed after 24h, conduct inspection of welds.
(B) steel member Welding Engineering
1. Master Project
(1) Match rod, wire, flux, electroslag weld nozzles and other welding material and the base material shall comply with the design requirements and current national industry standard "construction steel welding procedure" JGJ81-2002; the electrodes, flux, medicine cored wire, melt in the mouth, etc. before use, should be required to its product specifications and welding process documents for baking and storage.
(2) welder must pass the examination and obtain a certificate. Certified welders welding must pass the examination in their projects and their scope of accreditation. Should fully examine all welders certificate and scope of accreditation, valid.
2. General Project
Weld feel should be achieved: a uniform shape, good shape, bead and bead between the bead and base metal transition smoother, welding slag and spatter basic clean.

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(hào)
亚洲国产中文精品无码免费久久 | 国产又黄又大又粗| www.人人妻人人骑.com| 色五月综合婷婷丁香| 日韩国产在线观看| 日韩毛片无码永久免费韩 | 亚洲中文字幕精品一区二区| 九久肏中国老屄| 免费的四虎影库| 精品在线精品在线| 天堂91在线| 午夜无遮挡男女啪啪视频| 国产精品久久久久久久久免费蜜臀| 无码精品A∨在线观看十八禁| 免费的欧美一区二区| 天天躁日日躁狠狠躁喷水| 日韩欧美精品综合久久| 99热成人精品国产免| 久久久久免费精品无码| 免费看少妇特黄a| 欧洲亚洲视频在线免费观看| 无码一级a免一级a做免费线看| 熟女高湖一区二区麻豆AV| 亚洲无码一三区| 欧美日韩国产va另类| 国产一级a最新视频在线| 久久网站黄色| 亚洲香蕉网综合久久| 久久久久人妻一区精品加勒比| 六月伊人网| 莒南县| 综合亚洲色图网| 插 干 搞 爱 草| 性无码专| 国产中文69AV| 欧美日韩中文字幕二区三区| 人妻少妇久久综合黑人| 国产精品久久久久久久hd| 久久国产精品亚洲中文字幕| 无码精品人妻XX毛片| 伊人久久大杳蕉综合大象|