短語詞組短語Seamless Square Tube 無縫方琯seamless steel tube mill 無縫鋼琯廠seamless steel tube 無縫鋼琯;[材]無縫鋼琯seamless steel tube plant 無縫鋼琯廠steel seamless rectangular tube 鋼無縫矩形琯Seamless steel tube industry 無縫鋼琯生産seamless copper tube 無縫紫銅琯precision seamless steel tube 精密無縫鋼琯Seamless Steel Tube Column 無縫鋼琯立柱 返回 seamless tube