20#45號鋼（gāng）無縫鋼管切割（gē）Q345B厚壁管A3無縫鋼（gāng）管定做

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

材質             外徑*壁厚            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