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DIN EN 1666
DIN74361
DIN6334
DIN 2093
ASME B18.16.6-2008
Din186
Din188
DIN7505
JIS B 4648: 1994
replace: ISO 2936: 1983
JIS B 4633: 1998
replace: ISO/DIS 8764-1: 1996,ISO 8764-2:1992
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