欧美韩中文精品有码视频在线,国产欧美日韩综合视频专区,妺妺窝人体色WWW看人体

Home-News

Light know foreign valve is good, can in the end where is it?

Updated:2017-03-23

What is standard of sanitary fittings


Sanitary fittings standard, there are many different industries, different countries have their own standard, pipe fittings to execute strictly in accordance with the standard is a guarantee of enterprise products. The following is a brief introduction of common standard sanitary fittings.


On the part of the information we find some detailed information about sanitary fittings.


The sanitary fittings standard: made by ISO, GB, DIN, 3 a, IDF, such as for manufacturing, industrial pipe fittings standards: GB (GB), JIS (Japanese standard), DIN (German standard), ASTM/ASME (American standard), such as standard. GB is mandatory national standards, is the recommended national standards GB/T,


Sanitary fittings standard: DIN (Germany standard), SMS, ISO (international standards), IDF (international), 3 a, RJT, DS, BS, BPE standard, etc.


  • <menuitem id="fyapw"><center id="fyapw"></center></menuitem>

        1. <menuitem id="fyapw"><center id="fyapw"></center></menuitem>
          <pre id="fyapw"></pre>
          主站蜘蛛池模板: 扬州市| 亚洲视频久热九***| 成全大全免费观看完整版高清| 日本成本人av动画无码| 桂东县| 犍为县| 澄迈县| CHINESE国产高清AV| 免费国产在线精品一区| 通许县| 成全在线播放视频在线播放| 文成县| 日本妞被黑人玩坏在线| 日产电影一区二区三区| 兴国县| 亚洲精品一区二区三区在线| 亚洲日产和欧美日产的区别| 洪雅县| 青青草国产97免费观看| 日本一区二区三区免费| 洛川县| 日本一曲二曲三曲高清| 欧美乱大交做爰XXXⅩ性爽小说| 邛崃市| 老女人性生交大片免费| 青草草97久热精品视频| 宿迁市| 张家川| 国产成人无码精品亚洲| 昌乐县| 青神县| 九龙城区| 他的舌头挺进了我下面| 情欲办公室3韩国| 盘锦市| 苏州市| 海兴县| 潞城市| 国产精品99| 公在厨房扒开腿让我爽了在线观看| 国产精品成人A片在线果冻|