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DIMENSIONAL DATA

DN	Outside Diameter (D)	Diameter of Bolt Circle (K)	Diameter of Bolt Hole (L)	Bolting Number	Bolting Size	Outside Diameter of Neck (A)ᵃ	Flange Thickness (C3)	Neck Diameters (N3)	Corner Radius (R1)
10	90	60	14	4	M12	17,2	16	28	4
15	95	65	14	4	M12	21,3	16	32	4
20	105	75	14	4	M12	26,9	18	40	4
25	115	85	14	4	M12	33,7	18	50	4
32	140	100	18	4	M16	42,4	18	60	6
40	150	110	18	4	M16	48,3	18	70	6
50	165	125	18	4	M16	60,3	20	84	6
65	185	145	18	8	M16	76,1	22	104	6
80	200	160	18	8	M16	88,9	24	120	8
100	235	190	22	8	M20	114,3	24	142	8
125	270	220	26	8	M24	139,7	26	162	8
150	300	250	26	8	M24	168,3	28	192	10
200	375	320	30	12	M27	219,1	34	254	10
250	450	385	33	12	M30	273,0	38	312	12
300	515	450	33	16	M30	323,9	42	378	12
350	580	510	36	16	M33	355,6	46	432	12
400	660	585	39	16	M36	406,4	50	498	12
450	685	610	39	20	M36	457,0	57	522	12
500	755	670	42	20	M39	508,0	57	576	12
600	890	795	48	20	M45	610,0	72	686	12
700^b	-	-	-	-	-	-	-	-	-
800^b	-	-	-	-	-	-	-	-	-
900^b	-	-	-	-	-	-	-	-	-
1000^b	-	-	-	-	-	-	-	-	-
1200^b	-	-	-	-	-	-	-	-	-
1400^b	-	-	-	-	-	-	-	-	-
1600^b	-	-	-	-	-	-	-	-	-

TABLE NOTE

a) For flanges type 21 the outside hub diameter approximately corresponds to the outside pipe diameter and the nominal value dimensions A, N3 and R1 and their tolerances are included for guidance only.

c) Use is limited up to DN 600.

d) To be specified by the purchaser.

b) Only mating dimensions fixed, see Annex J.

BS EN 1092-1
Type 21 Integral Flange PN 40

Need BS EN 1092-1 Type 21 Integral Flanges for Your Project?

BS EN 1092-1Type 21 Integral Flange PN 40

Need BS EN 1092-1 Type 21 Integral Flanges for Your Project?

BS EN 1092-1
Type 21 Integral Flange PN 40