drawn steel tubing 中文意思是什麼
drawn steel tubing
解釋
拉制鋼管-
Standard specification for cold - drawn buttweld carbon steel mechanical tubing
冷拉對縫焊碳素鋼機械管的標準規范 -
Standard specification for seamless cold - drawn carbon steel tubing for hydraulic system service
液壓系統設備用無縫冷拔碳素鋼管的標準規范
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