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鍋爐管
鍋爐管是指兩端開口并具有中空斷面，其長度與周邊之比較大的鋼材，按生產方法可分為無縫鋼管和焊接鋼管，鋼管的規格用外形尺寸（如外徑或邊長）及壁厚表示，其尺寸范圍很廣，從直徑很小的毛細管直到直徑達數米的大口徑管。鋼管可用于管道、熱工設備、機械工業、石油地質勘探、容器、化學工業和特殊用途。
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