I.S. EN 772-20:2000现行
Methods Of Test For Masonry Units Part 20 - Determination Of Flatness Of Faces Of Aggregate Concrete, Manufactured Stone And Natural Stone Masonry Units
出版：National Standards Authority of Ireland
专家解读视频
Gives a method for determining the flatness of faces of aggregate concrete, manufactured stone and natural stone masonry units.
SN EN 772-20:2000 - Identical
NBN EN 772-20:2000 - Identical
NF EN 772-20:2001 - Identical
ONORM EN 772-20:2005 - Identical
DIN EN 772-20 (2005-05) - Identical
UNI EN 772-20:2005 - Identical
NS EN 772-20:2000 - Identical
UNE EN 772-20:2001 - Identical
SS EN 772-20:2000 - Identical
NEN EN 772-20:2000 - Identical
BS EN 772-20:2000 - Identical
