GB/T 145-2001 Translated English of Chinese Standard. (GBT 145-2001, GB/T145-2001, GBT145-2001): Center holeshttps://www.chinesestandard.net, 2019 M08 17 - 7 pages This Standard specifies the types and sizes of the Type A, Type B, Type C, and Type R center holes. This Standard applies to the Type A, Type B, Type C, and Type R center holes. |