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ANSI B16.5
BS 10
BS4504
DIN
EN1092-1
ERV flange
GOST 12820
JIS
KSB
Pipe fittings
SANS 1123
UNI
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Product
ANSI B16.5
BS 10
BS4504
DIN
EN1092-1
ERV flange
GOST 12820
JIS
KSB
Pipe fittings
SANS 1123
UNI
Product
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GOST 12820-80
