20#45號鋼無縫鋼管切割Q345B厚壁管A3無（wú）縫鋼管定做

山東宏钜天（tiān）成鋼管（guǎn）有限公司         139-6958-0678

材質             外（wài）徑*壁（bì）厚            噸位

45#              480*65                35.62

45#              457*65                20.91

45#              426*45                20.796

45#              351*65                20.594

45#              325*80                21.516

45#              325*90                27.072

45#              325*85                30.31

45#              325*75                31.646