生产定制金属变径环缩径环扩径环
50


PG11-PG9
PG11
PG9
9
8.5
20
50


PG13.5-PG9
PG13.5
PG9
9
9
22
50


PG13.5-PG11
PG13.5
PG11
9
9
22
50


PG16-PG11
PG16
PG11
10