Q345B矩形管50×50×320#/16mnQ345GB/T3094
Q345B矩形管40×40×520#/16mnQ345GB/T3094
Q345B矩形管40×40×420#/16mnQ345GB/T3094
Q345B矩形管40×40×320#/16mnQ345GB/T3094
Q345B矩形管30×30×520#/16mnQ345GB/T3094
Q345B矩形管30×30×320#/16mnQ345GB/T3094
Q345B矩形管25×25×520#/16mnQ345GB/T3094
Q345B矩形管25×25×420#/16mnQ345GB/T3094
Q345B矩形管25×25×320#/16mnQ345GB/T3094
Q345B矩形管20×20×320#/16mnQ345GB/T3094
Q345B矩形管25×20×320#/16mnQ345GB/T3094
Q345B矩形管30×20×320#/16mnQ345GB/T3094
Q345B矩形管30×25×320#/16mnQ345GB/T3094
Q345B矩形管35×20×320#/16mnQ345GB/T3094
Q345B矩形管35×25×320#/16mnQ345GB/T3094
Q345B矩形管35×30×320#/16mnQ345GB/T3094
Q345B矩形管40×20×320#/16mnQ345GB/T3094
Q345B矩形管40×25×320#/16mnQ345GB/T3094
Q345B矩形管40×30×320#/16mnQ345GB/T3094
Q345B矩形管50×20×320#/16mnQ345GB/T3094
Q345B矩形管50×25×320#/16mnQ345GB/T3094
Q345B矩形管50×30×520#/16mnQ345GB/T3094
Q345B矩形管50×30×420#/16mnQ345GB/T3094
Q345B矩形管50×30×320#/16mnQ345GB/T3094
Q345B矩形管50×35×520#/16mnQ345GB/T3094
Q345B矩形管50×35×320#/16mnQ345GB/T3094
Q345B矩形管50×40×520#/16mnQ345GB/T3094
Q345B矩形管50×40×420#/16mnQ345GB/T3094
Q345B矩形管50×40×320#/16mnQ345GB/T3094
Q345B矩形管50×45×520#/16mnQ345GB/T3094
Q345B矩形管50×45×420#/16mnQ345GB/T3094
Q345B矩形管50×45×320#/16mnQ345GB/T3094
Q345B矩形管60×20×320#/16mnQ345GB/T3094
Q345B矩形管60×30×420#/16mnQ345GB/T3094
Q345B矩形管60×30×320#/16mnQ345GB/T3094
Q345B矩形管60×40×520#/16mnQ345GB/T3094
Q345B矩形管60×40×420#/16mnQ345GB/T3094
Q345B矩形管60×40×320#/16mnQ345GB/T3094
Q345B矩形管60×50×620#/16mnQ345GB/T3094
Q345B矩形管60×50×520#/16mnQ345GB/T3094
Q345B矩形管60×50×420#/16mnQ345GB/T3094
Q345B矩形管60×50×320#/16mnQ345GB/T3094
Q345B矩形管70×20×420#/16mnQ345GB/T3094
Q345B矩形管70×20×320#/16mnQ345GB/T3094
Q345B矩形管70×30×520#/16mnQ345GB/T3094
Q345B矩形管70×30×420#/16mnQ345GB/T3094
Q345B矩形管70×30×320#/16mnQ345GB/T3094
Q345B矩形管70×40×520#/16mnQ345GB/T3094
Q345B矩形管70×40×420#/16mnQ345GB/T3094
Q345B矩形管70×40×320#/16mnQ345GB/T3094
Q345B矩形管70×50×620#/16mnQ345GB/T3094
Q345B矩形管70×50×520#/16mnQ345GB/T3094
Q345B矩形管70×50×420#/16mnQ345GB/T3094