無縫鋼管:GB8162-99
無縫鋼管:GB8162-99 20#/GB8162 219X6 5310<BR>無縫鋼管:GB8162-99 20#/GB8162 219X6.5 5310<BR>無縫鋼管:GB8162-99 20#/GB8162 219X8 5310<BR>無縫鋼管:GB8162-99 20#/GB8162 219X10 5310<BR>無縫鋼管:GB8162-99 20#/GB8162 219X12 5310<BR>無縫鋼管:GB8162-99 20#/GB8162 245X8 6310<BR>無縫鋼管:GB8162-99 20#/GB8162 245X10 6310<BR>無縫（féng）鋼管（guǎn）:GB8162-99 20#/GB8162 273X7 6310<BR>無縫…
無縫鋼管:GB8162-99 20#/GB8162 219X6 5310
無（wú）縫（féng）鋼管:GB8162-99 20#/GB8162 219X6.5 5310
無縫（féng）鋼（gāng）管:GB8162-99 20#/GB8162 219X8 5310
無縫鋼管:GB8162-99 20#/GB8162 219X10 5310
無（wú）縫鋼管:GB8162-99 20#/GB8162 219X12 5310
無縫鋼管:GB8162-99 20#/GB8162 245X8 6310
無縫鋼管:GB8162-99 20#/GB8162 245X10 6310
無縫鋼管:GB8162-99 20#/GB8162 273X7 6310
無縫鋼管:GB8162-99 20#/GB8162 273X8 6310
無縫鋼管:GB8162-99 20#/GB8162 273X10 6310
無縫鋼管:GB8162-99 20#/GB8162 273X12 6310
無（wú）縫鋼管:GB8162-99 20#/GB8162 219X25 7100
無縫鋼管:GB8162-99 20#/GB8162 219X30 7100