BS EN 1092 PN16 Flange Dimensions

BS EN 1092-1 PN 16 Dimensions

DN = Nominal size, D = Outside Diameter, A = Outside Dia of Neck , B1 = Bore of Type 01 & 12 Flange, C1 = Thickness of Plate Flange,
C2 = Thickness of Weld_Neck and Boss Flange , N1 = Dia of Weld Neck , N2 = Dia of Boss ,R = corner Radius, H1 = Length of Boss Flange,
H2 = Length of Weld Neck Flange, H3 = Length of Neck : S = neck thickness

Note: The flange types shown are only a small part of the range covered in BS EN 1092-1.

type 05 is a blank flange
type13 is a screwed boss flange
type 02 is a loose plate flange used with either
a type 32 weld on plate collar or
a type 33 lapped pipe end
a type 04 flange is a loose flange for use with a
type 34 a weld-neck collar
type 21 is an integral flange

The Facings shown are type B (Raised Face). Other Facings include:
Type A..Flat:  Type C..Tongue:   Type D..Groove   Type E..Spigot:  :Type F..Recess:   Type G..O-ring Spigot:  Type H.,0-ring Groove:

A typical designation for a flange would be BS EN 1092-1/01B/DN150/PN16/ */S235JR
Key: = Standard No/Flange Type & Face Type / Nominal Size/ Pressure Rating/*/ Material Designation.
* Normally not used.   For 01 type flanges above 600 mm the bore B1 would be specified here .   * for type 11 and 31 the neck thickness (S) is specified here.
An example designation for an flange for an 800mm pipe ...  BS EN 1092-1/01B/DN800/PN16/818/S235JR

This is an extremely simplified note. To obtain a comprehensive description with the various variations the standards must be used.

Note : All Dimensions in mm

DN	D	C1	C2	H1	H2	H3	R	A	N1	N2	B1	d1	f1	S
10	90	14	14	20	35	6	4	17,2	28	30	18	40	2	1,8
15	95	14	14	20	35	6	4	21,3	32	35	22	45	2	2,0
20	105	14	14	24	38	6	4	26,9	39	45	27,5	58	2	2,3
25	115	16	16	24	38	6	4	33,7	46	52	34,5	68	2	2,6
32	140	18	16	26	40	6	6	42,4	56	60	43,5	78	2	2,6
40	150	18	16	26	42	7	6	48,3	64	70	49,5	88	2	2,6
50	165	19	18	28	45	8	6	60,3	75	84	61,5	102	2	2,9
65	185	20	18	32	45	10	6	76,1	90	104	77,5	122	2	2,9
80	200	20	20	34	50	10	8	88,9	105	118	90,5	138	2	3,2
100	220	22	20	40	52	12	8	114,3	131	140	116	158	2	3,6
125	250	22	22	44	55	12	8	139,7	156	168	141,5	188	2	4,0
150	285	24	22	44	55	12	10	168,3	192	195	170,5	212	2	4,5
200	340	26	24	44	62	16	10	219,1	235	246	221,5	268	2	5,6
250	405	29	26	46	70	16	12	273	292	298	276,5	320	2	6,3
300	460	32	28	46	78	16	12	323,9	344	350	327,5	378	2	7,1
350	520	35	30	57	82	16	12	355,6	390	400	359	438	2	8,0
400	580	38	32	63	85	16	12	406,4	445	456	411,0	490	2	8,0
450	640	42	40	68	87	16	12	457,0	490	502	462,0	550	2	8,0
500	715	46	44	73	90	16	12	508,0	548	559	513,5	610	2	8,0
600	840	52	54	83	95	18	12	610,0	652	658	616,5	725	2	8,8
700	910	-	36	83	100	18	12	711,0	755	760	-	795	2	8,8
800	1025	-	38	90	105	20	12	813,0	855	864	-	900	2	10,0
900	1125	-	40	94	110	20	12	914,0	955	968	-	1000	2	10,0
1000	1255	-	42	100	120	22	16	1016,0	1058	1072	-	1115	2	10,0
1200	1485	-	48	-	130	30	16	1219,0	1262	-	-	1330	2	12,5
1400	1685	-	52	-	145	30	16	1420,0	1465	-	-	1530	2	14,2
1600	1930	-	58	-	160	35	16	1620,0	1668	-	-	1750	2	16,0
DN	D	C1	C2	H1	H2	H3	R	A	N1	N2	B1	d1	f1	S

Note: in BS EN 1092-1:2002 f1= 2 for all sizes.
In the latest versions of the relevant DIN standard. f1 varies as follow
(DN =< 32 f1 = 1-2, DN 32->250(inc) f1= 1-3, DN 250->500(inc) f1= 1-4, Dn >500 f1= 1-5 )..

Flange Bolting

K = Bolt Circle Diameter, L = Dia Of Bolt Hole,
No = Number of Holes , Size = Size of Bolts

DN	K	L	No	Size
mm	mm	mm	-	mm
10	60	14	4	M12
15	65	14	4	M12
20	75	14	4	M12
25	85	14	4	M12
32	100	18	4	M16
40	110	18	4	M16
50	125	18	4	M16
65	145	18	8**	M16
80	160	18	8	M16
100	180	18	8	M16
125	210	18	8	M16
150	240	22	8	M20
200	295	22	12	M20
250	355	26	12	M24
300	410	26	12	M24
350	470	26	16	M24
400	525	30	16	M27
450	585	30	20	M27
500	650	33	20	M30
600	770	36	20	M33
700	840	36	24	M33
800	950	39	24	M36
900	1050	39	28	M36
1000	1170	42	28	M39
1200	1390	48	32	M45
1400	1590	48	36	M45
1600	1820	56	40	M52
DN	K	L	No	Size

** Subject to agreement between the manufacturer and the purchaser 4 holes can be used for PN 16, DN65 steel flanges

Steel Flange Index