ONORM EN ISO 6411:1997现行
Technical Drawings - Simplified Representation Of Centre Holes
出版：Osterreichisches Normungsinstitut
专家解读视频
Defines the simplified representation of centre holes together with their designation. It is possible to use simplified representation of centre holes especially when it is unnecessary to show the exact form and size and where the designation of standardized centre holes is enough for information. ALSO NUMBERED AS BS 308-1.23(1997)
UNE EN ISO 6411:1998 - Identical
SS EN ISO 6411 Ed. 1 (1997) - Identical
ISO 6411:1982 - Identical
NS EN ISO 6411 Ed. 1 (1998) - Identical
I.S. EN ISO 6411:1998 - Identical
UNI EN ISO 6411:1999 - Identical
NF EN ISO 6411:1998 - Identical
NBN EN ISO 6411:1998 - Identical
BS EN ISO 6411:1997 - Identical
SN EN ISO 6411:1998 - Identical
