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CSA CEI/IEC 1000.2.1-97:(R2014)
API 2390 : 2012
GOST R IEC 62264-3 : 2012
AWS A5.34/A5.34M : 2013
ASME A112.3.4 CSA B45.9:2018
TR 103 314 : 1.1.1
ASTM D 4005 : 1992 : R1997
ASTM B 579 : 1973 : R1999
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