[object Object]Engineering Information, Conversions and Calculations

Flange Dimensions for DN250

Dimensional tables for PN, ANSI and BS10 DN250mm (10 Inch) flanges.

[object Object]
DIMENSION TABLES FOR 250mm (10 Inch) FLANGES
BS EN

1092

DIAMETER

OF FLANGE

(A)

BOLT

CIRCLE

DIAMETER

(G)

number

OF BOLTS

BOLT SIZEDIAMETER

OF HOLES

(D)

DIAMETER

OF RAISED

FACE

(C)

HEIGHT

OF RAISED

FACE

(F)

THICKNESS

(E)

PN

PN 637533512M1618312222
PN 10395 (2)35012M2022320226
PN 16405 (2)35512M2426320226
PN 2542537012M2730335232
PN 4045038512M3033345238
PN 6447040012M3336345246
PN 10050543012M3639345260

ANSI

Class 125 / 15016 (406)14 1/4 (362)127/81 (25)12 3/4 (324)1/16 (2)1 3/16 (30)
Class 30017 1/2 (445)15 1/4 (387)161 (25)1 1/8 (29)12 3/4 (324)1/161 7/8 (41)
Class 60020 (508)17 (432)161 1/4 (32)1 3/8 (35)12 3/4 (324)1/42 1/2 (64)
Class 90021 1/2 (546)18 1/2 (470)161 3/8 (35)1 1/2 (38)12 3/4 (324)1/42 3/4 (70)
Class 150023 (584)19 (483)121 7/8 (41)2 1/2 (38)12 3/4 (324)1/44 1/4 (108)

BS 10

Table A16 (406)14 (356)83/47/8 22--15/16
Table D16 (406)14 (356)83/47/8 22--3/4
Table E16 (406)14 (356)123/47/8 22--7/8
Table F17 (432)15 (381)127/81 (25)--1 (25)
Table H17 (432)15 (381)127/81 (25)121/4 (311)1/161 3/8 (35)

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