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ASME_B16.104 control valve seat leakage
ASME B16.47-2011 large diameter steel flanged
ASME B16.42-98(Chinese ductile iron pipe flanges and flanged fitings
ASME B16.10-2009 Face-to-Face and End-to-End Dimensions of Valves
ASME B16.5-2013 Flanged Fittings
API_609-2009 butterfly valves Chinese
API_598-2009- Chinese
EN 12627-1999 butt-weld
EN 12266-1-2012
DIN EN 1092-1 2008 flanges and joints
DIN 3230-3-1982 valves leagage inspection standard
BS-EN-558-2008 valves face to face size standard
BS_EN1092-2
BS EN 593-2004
steel welding flanges GOST-12821-80
GOST-33259-2015
GOST-9544-2005 gost standard leakage standard
Gost 28908-91-butterfly valve ball valves face to face series 1 wafer 2
12815-80 steel flanges
ISO5211- Industrial valves part-turn actuator attachments
ISO 5752-1982 face to face
ISO 5208-2008 Industrial valves — Pressure testing of metallic valves
BS EN ISO 5210-1996 Industrial valves multi-turn valve actuator attachments
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