短語詞組短語Seamless Square Tube 無縫方管seamless steel tube mill 無縫鋼管廠seamless steel tube 無縫鋼管;[材]無縫鋼管seamless steel tube plant 無縫鋼管廠steel seamless rectangular tube 鋼無縫矩形管Seamless steel tube industry 無縫鋼管生產(chǎn)seamless copper tube 無縫紫銅管precision seamless steel tube 精密無縫鋼管Seamless Steel Tube Column 無縫鋼管立柱 返回 seamless tube