亚美AV一区二区三区2019中文字幕久久综合久久国产免费2020东京热无码视频免费二区三区国产在线不卡观看国语2025年中文字幕中文中字幕有码7m视频分类凸凹免费大全

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熱門關(guān)鍵詞：304不銹鋼無縫管,不銹鋼無縫管,不銹鋼焊管,316不銹鋼管

新聞中心

用磁鐵來檢測(cè)不銹鋼是200系還是300系有科學(xué)根據(jù)嗎

作者：無錫鑫嘉康金屬制品有限公司時(shí)間：2018/10/22 14:39:280 次瀏覽

用磁鐵來檢測(cè)不銹鋼是200系還是300系有科學(xué)根據(jù)嗎

不銹鋼常識(shí):用磁鐵來檢測(cè)不銹鋼是200系還是300系是沒有科學(xué)根據(jù)的,304經(jīng)過加工后呈弱磁性,用砂輪打磨看火花來確定不銹鋼材質(zhì)也沒有科學(xué)根據(jù),硬度不同產(chǎn)生的火花自然不同,最簡(jiǎn)單的辦法就是316不銹鋼厚壁管檢測(cè)液,一滴就基本上能大概的判斷出屬于那種材質(zhì)。最科學(xué)的辦法就是光譜檢測(cè)。

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