20#/GB8162結構用無縫管|20#結構管價格|結構管價格
20#/GB8162結構用無縫管 | 325X14 | 5340 |
20#/GB8162結構用無縫管 | 325X16 | 5340 |
20#/GB8162結構用無縫管 | 377X10 | 5340 |
20#/GB8162結構用無縫管 | 377X11 | 5340 |
20#/GB8162結構用無縫管 | 377X12 | 5340 |
20#/GB8162結構用無縫管 | 377X14 | 5340 |
20#/GB8162結構用無縫管 | 377X16 | 5340 |
20#/GB8162結構用無縫管 | 426X11 | 5340 |