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DN	D	k	d4	S	d1	d3
10	90	60	40	2.0	17.2	28
15	95	65	45	2.0	21.3	32
20	105	75	58	2.3	26.9	40
25	115	85	68	2.6	33.7	46
32	140	100	78	2.6	42.4	56
40	150	110	88	2.6	48.3	64
50	165	125	102	2.9	60.3	75
65	185	145	122	2.9	76.1	90
80	200	160	138	3.2	88.9	105
100	235	190	162	3.6	114.3	134
125	270	220	188	4.0	139.7	162
150	300	250	218	4.5	168.3	192
200	360	310	278	6.3	219.1	244
250	425	370	335	7.1	273.0	298
300	485	430	395	8.0	323.9	352
DN	D	k	d4	S	d1	d3
350	555	490	450	8.0	355.6	398
400	620	550	505	8.8	406.4	452
450	670	600	555	8.8	457.0	500
500	730	660	615	10.0	508.0	558
600	845	770	720	11.0	610.0	660
700	960	875	820	14.2	711.0	760
800	1085	990	930	16.0	813.0	864
900	1185	1090	1030	17.5	914.0	968
1000	1320	1210	1140	20.0	1016.0	1070

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DN	d2	f	b	h1	h2	r
10	14	2	16	35	6	4
15	14	2	16	38	6	4
20	14	2	18	40	6	4
25	14	2	18	40	6	4
32	18	2	18	42	6	6
40	18	3	18	45	7	6
50	18	3	20	48	8	6
65	18	3	22	52	10	6
80	18	3	24	58	12	8
100	22	3	24	65	12	8
125	26	3	26	68	12	8
150	26	3	28	75	12	10
200	26	3	30	80	16	10
250	30	3	32	88	18	12
300	30	4	34	92	18	12
DN	d2	f	b	h1	h2	r
350	33	4	38	100	20	12
400	36	4	40	110	20	12
450	36	4	46	110	20	12
500	36	4	48	125	20	12
600	39	5	48	125	20	12
700	42	5	50	129	20	12
800	48	5	53	138	22	12
900	48	5	57	148	24	12
1000	56	5	63	160	24	16

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DN	No of Bolts	Dia. of Hex Bolts	Length of Hex Bolts	Dia. of Stud BoltsS	Length of Stud Bolts
10	4	M12	50	1/2″	65
15	4	M12	50	1/2″	65
20	4	M12	55	1/2″	70
25	4	M12	55	1/2″	70
32	4	M16	60	5/8″	80
40	4	M16	60	5/8″	80
50	4	M16	65	5/8″	80
65	8	M16	65	5/8″	85
80	8	M16	70	5/8″	90
100	8	M20	75	3/4″	95
125	8	M24	85	7/8″	110
150	8	M24	90	7/8″	115
200	12	M24	90	7/8″	115
250	12	M27	100	1″	130
300	16	M27	105	1″	130
DN	No of Bolts	Dia. of Hex Bolts	Length of Hex Bolts	Dia. of Stud BoltsS	Length of Stud Bolts
350	16	M30	115	1-1/8″	145
400	16	M33	120	1-1/4″	160
450	20	M33	135	1-1/4″	170
500	20	M33	140	1-1/4″	175
600	20	M36	140	1-3/8″	180
700	24	M39	150	1-1/2″	195
800	24	M45	160	1-3/4″	215
900	28	M45	170	1-3/4″	220
1000	28	M52	190	2″	250

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Legend

D = Outside Diameter
k = Diameter of Bolt Circle
d2 = Diameter of Bolt Holes
d4 = Diameter of Raised Face
f = Height of Raised Face
d1 = Outside Diameter of Neck
b = Flange thickness
h1 = Length of Flange
h2 = Length of right end
d3 = Neck Diameter
r = Radius of Corners
S = Wall thickness

General notes:

1. Dimensions are in millimeters unless otherwise indicated.
2. Butt-weld ends (must be specified when ordering) acc. to DIN 3239-1-R6 edge form 22 to DIN 2559 (DIN EN ISO 9692)

Extra notes:

1. Hex bolt lengths and diameters & lengths of Stud Bolts are calculated.
2. All bolt lengths calculated without washers, spring washers etc. and free threads (equals 1/3 time bolt diameter).
3. Gasket thickness considered 3 mm for bolt length calculations.
4. The dimensions of the bolts are for the type 11 weld neck flange.
5. Please not that other types of flanges can be have different bolt hole diameters and thicknesses, so that the bolts even can have different dimensions.

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