Language
DIN 2093 (C) - 2013
D
DIN EN 16983 (C) - 2017
DIN 9025 (S)
GB /T 1972 (A) - 1992
GB /T 1972 (C) - 1992
GB /T 1972 (B) - 2005
GB /T 1972 (B) - 1992
GB /T 1972 (C) - 2005
GB /T 1972 (A) - 2005
ASME/ANSI B 18.21.1 - 2009
ASME B 18.21.3 - 2008 (R2013)
UNI 9319 - 1994
BS 4464 - 1969
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