廠家低價直供Q345D無縫鋼管、16MnD無縫鋼管、16Mn厚壁無縫鋼管，規格精準，庫存充足，價格實惠，敬請選購。 

產品 材質 規格 價格
Q345D無縫鋼管 Q345D 157*4     60*4.6 5645/噸
Q345D無縫鋼管 Q345D 275*8     180*6.2 5655/噸
Q345D無縫鋼管 Q345D 376*12   531*9 5610/噸
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