Language
GB 827 - 1986
GB 867 - 1986
BS 4620 (T4) - 1970
ASME/ANSI B 18.1.3M - 1983 (R2006)
NF E 27-154 - 1952
EN 6081 - 2022
NF E 27-153 - 1952
BS 4620 (T3) - 1970
BS 4620 (T6) - 1970
BS 4620 (T7) - 1970
BS 4620 (T2) - 1970
BS 4620 (T5) - 1970
BS 4620 (T1) - 1970
BS 275 (-3) - 1927
BS 275 (-4) - 1927
BS 275 (-5) - 1927
BS 275 (-6) - 1927
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