Warning: Use of undefined constant title - assumed 'title' (this will throw an Error in a future version of PHP) in /data/www.zhuangjiba.com/web/e/data/tmp/tempnews1.php on line 152 tc20是什么意思
- 分类：硬件教程 发布时间： Warning: Use of undefined constant newstime - assumed 'newstime' (this will throw an Error in a future version of PHP) in /data/www.zhuangjiba.com/web/e/data/tmp/tempnews1.php on line 156 2022年02月13日 08:37:00
tc20是什么意思?这是很多小伙伴都没见过的,简单来说tc20就是电线管,有接触这方面的小伙伴应该都知道,那么还没了解过这方面知识的小伙伴,下面小编就给大家带来tc20详细介绍。
TC20是表示电线管。 电线管英文代号TC 汉语拼音代号DG ,20表示公称管径 如果是单独的TC,意思是：电缆沟敷设,TC线管敷设是使用电线钢管敷设。电线钢管是薄壁管，公称直径是管子的外径。
SC线管敷设是使用普通焊接钢管敷设。普通焊接钢管是厚壁管,公称直径是管内径。
SC管材质要求钢导管无压扁，内壁光滑。焊缝均匀，无劈裂、砂眼、棱刺和凹扁现象。导管无严重锈蚀。锁紧螺母外形完好无损，丝扣清晰，无翘曲变形。导管的管径、壁厚及均匀度。
JDG管材质要求型号规格符合设计要求管材表面有明显不脱落的产品标识。金属内外壁镀层均匀完好无剥落、锈蚀等现象。管材连接套管及其金属附件内外壁表面光洁无毛刺、飞边、砂眼、气泡、裂纹、变形等缺陷。管材连接套管及其金属附件壁厚均匀管口边缘平整光滑,紧定螺钉符合产品设计要求螺纹整齐光滑配合良好。管材壁厚、内外直径应均匀。
以上就是tc20详细介绍，希望能帮助到大家。
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显卡驱动不安装会怎样的详细介绍
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rtx3080ti显卡发布时间曝光
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