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12" NB (DN300) Flange Table - Flange Dimensions

12" Flange Diameter PCD No. of Bolt Holes Diameter of Bolts Diameter of Holes Diameter of Raised Face Height of Raised Face
PN6 440mm 395mm 12 M20 22mm 365mm 4mm
PN10 445mm 400mm 12 M20 22mm 370mm 4mm
PN16 460mm 410mm 12 M24 26mm 378mm 4mm
PN25 485mm 430mm 16 M27 30mm 395mm 4mm
PN40 515mm 450mm 16 M30 33mm 410mm 4mm
PN64 530mm 460mm 16 M33 36mm 410mm 4mm
Table D 18" (457mm) 16" (406mm) 12 3/4" (19mm) 7/8" (22mm)    
Table E 18" (457mm) 16" (406mm) 12 7/8" (22mm) 1" (25mm)    
Table F 19 1/4" (489mm) 17 1/4" (438mm) 16 7/8" (22mm) 1" (25mm)    
Table H 19 1/4" (489mm) 17 1/4" (438mm) 16 7/8" (22mm) 1" (25mm) 14 1/4" (362mm) 1/16" (2mm)
ANSI 125/150 19" (483mm) 17" (432mm) 12 7/8" (22mm) 1" (25mm) 15" (381mm) 1/16" (2mm)
ANSI 300 20 1/2" (521mm) 17 3/4" (451mm) 16 1 1/8" (29mm) 1 1/4" (32mm) 15" (381mm) 1/16" (2mm)

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