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JIS G3444 is the standard of carbon steel tubes for general structural purposes
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This Japanese Industrial Standard specifies the alloy steel tubes, hereinfter referred to as the"tubes", used for machinery, automobiles and other machine parts.
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Tel : +8615864396235
Email : jane@ruixingmetal.com
WhatsApp : +8615864396235
Add : Heilongjiang Road, Liaocheng City, Shandong Province, China
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