无缝钢管标准/gb8163-99价格
gb8163 99 20#/GB8163 168X5.5 5110<BR>gb8163 99 20#/GB8163 168X6 5110<BR>gb8163 99 20#/GB8163 168X8 5110<BR>gb8163 99 20#/GB8163 168X10 5110<BR>gb8163 99 20#/GB8163 180X8 5360<BR>gb8163 99 20#/GB8163 180X10 5360<BR>gb8163 99 20#/GB8163 194X8 5360<BR>gb8163 99 20#/GB8163 194X10 5360<BR>gb8163 99 20#/GB8163 219X7 5360<BR>gb8163 99 20#/GB8163 219X8 5360<BR>gb816…
gb8163 99 20#/GB8163 168X5.5 5110
gb8163 99 20#/GB8163 168X6 5110
gb8163 99 20#/GB8163 168X8 5110
gb8163 99 20#/GB8163 168X10 5110
gb8163 99 20#/GB8163 180X8 5360
gb8163 99 20#/GB8163 180X10 5360
gb8163 99 20#/GB8163 194X8 5360
gb8163 99 20#/GB8163 194X10 5360
gb8163 99 20#/GB8163 219X7 5360
gb8163 99 20#/GB8163 219X8 5360
gb8163 99 20#/GB8163 203X8 5360
gb8163 99 20#/GB8163 203X10 5360
gb8163 99 20#/GB8163 219X6 5360