WN Flanges (EN1092.1)

Dimensions of Weld Neck Flanges PN 2.5 EN 1092-1

DN	Pipe OD, A		Outside Diameter, D	Diameter of Bolt Circle, K	Diameter of Bolt Holes, L	No. of bolts	Diameter of Raised Face, d	Height of Raised Face, f1	Flange thickness, C	Length of Flange, H	Neck Diameter , N		Wall thickness, S	Length of right end, H1	Radius of Corners, r
DN	Series Ⅰ	Series Ⅱ	Outside Diameter, D	Diameter of Bolt Circle, K	Diameter of Bolt Holes, L	No. of bolts	Diameter of Raised Face, d	Height of Raised Face, f1	Flange thickness, C	Length of Flange, H	Series Ⅰ	Series Ⅱ	Wall thickness, S	Length of right end, H1	Radius of Corners, r
10	17.2	14	75	50	11	4	35	2	12	28	26		2.0	6	4
15	21.3	18	80	55	11	4	40	2	12	30	30		2.0	6	4
20	26.9	25	90	65	11	4	50	2	14	32	38		2.3	6	4
25	33.7	32	100	75	11	4	60	2	14	35	42		2.6	6	4
32	42.4	38	120	90	14	4	70	2	14	35	55		2.6	6	6
40	48.3	45	130	100	14	4	80	3	14	38	62		2.6	7	6
50	60.3	57	140	110	14	4	90	3	14	38	74		2.9	8	6
65	76.1	76	160	130	14	4	110	3	14	38	88		2.9	9	6
80	88.9	89	190	150	18	4	128	3	16	42	102		3.2	10	8
100	114.3	108	210	170	18	4	148	3	16	45	130		3.6	10	8
125	139.7	133	240	200	18	8	178	3	18	48	155		4.0	10	8
150	168.3	159	265	225	18	8	202	3	18	48	184		4.5	12	10
200	219.1	219	320	280	18	8	258	3	20	55	236		6.3	15	10
250	273	273	375	335	18	12	312	3	22	60	290		6.3	15	12
300	323.9	325	440	395	22	12	365	4	22	62	342		7.1	15	12
350	355.6	377	490	445	22	12	415	4	22	62	385	390	7.1	15	12
400	406.4	426	540	495	22	16	465	4	22	65	438	440	7.1	15	12
450	457	480	595	550	22	16	520	4	22	65	492	494	7.1	15	12
500	508	530	645	600	22	20	570	4	24	68	538	545	7.1	15	12
600	610	630	755	705	26	20	670	5	30	70	640	650	7.1	16	12
700	711	720	860	810	26	24	775	5	30	76	740	740	7.1	16	12
800	813	820	975	920	30	24	880	5	30	76	842	844	7.1	16	12
900	914	920	1075	1020	30	24	980	5	30	78	942	944	7.1	16	12
1000	1016	1020	1175	1120	30	28	1080	5	30	82	1045		8.0	16	16
1200	1219	1220	1375	1320	30	32	1280	5	32	94	1245		8.0	16	16
1400	1422	1420	1575	1520	30	36	1480	5	38	96	1445		8.8	16	16
1600	1626	1620	1790	1730	30	40	1690	5	46	102	1645		10.0	20	16
1800	1829	1820	1990	1930	30	44	1890	5	46	110	1845		11.0	20	16
2000	2032	2020	2190	2130	30	48	2090	5	50	122	2045		11.0	22	16
2200	2235	2220	2405	2340	33	52	2295	5	56	129	2248		11.0	25	18
2400	2438	2420	2605	2540	33	56	2495	5	62	143	2448		11.0	25	18
2600	2620		2805	2740	33	60	2695	5	64	148	2648		11.0	25	18
2800	2820		3030	2960	36	64	2910	5	74	161	2848		11.0	25	18
3000	3020		3230	3160	36	68	3110	5	80	170	3050		11.0	25	18
3200	3220		3430	3360	36	72	3310	5	84	180	3250		11.0	25	20
3400	3420		3630	3560	36	76	3510	5	90	194	3450		11.0	28	20
3600	3620		3840	3770	36	80	3720	5	96	201	3652		11.0	28	20
3800	3820		4045	3970	39	80	3920	5	102	212	3852		11.0	28	20
4000	4020		4245	4170	39	84	4120	5	106	226	4052		11.0	28	20

Dimensions of Weld Neck Flanges PN 6 EN 1092-1

DN	Pipe OD, A		Outside Diameter, D	Diameter of Bolt Circle, K	Diameter of Bolt Holes, L	No. of bolts	Diameter of Raised Face, d	Height of Raised Face, f1	Flange thickness, C	Length of Flange, H	Neck Diameter , N		Wall thickness, S	Length of right end, H1	Radius of Corners, r
DN	Series Ⅰ	Series Ⅱ	Outside Diameter, D	Diameter of Bolt Circle, K	Diameter of Bolt Holes, L	No. of bolts	Diameter of Raised Face, d	Height of Raised Face, f1	Flange thickness, C	Length of Flange, H	Series Ⅰ	Series Ⅱ	Wall thickness, S	Length of right end, H1	Radius of Corners, r
10	17.2	14	75	50	11	4	35	2	12	28	26		2.0	6	4
15	21.3	18	80	55	11	4	40	2	12	30	30		2.0	6	4
20	26.9	25	90	65	11	4	50	2	14	32	38		2.3	6	4
25	33.7	32	100	75	11	4	60	2	14	35	42		2.6	6	4
32	42.4	38	120	90	14	4	70	2	14	35	55		2.6	6	6
40	48.3	45	130	100	14	4	80	3	14	38	62		2.6	7	6
50	60.3	57	140	110	14	4	90	3	14	38	74		2.9	8	6
65	76.1	76	160	130	14	4	110	3	14	38	88		2.9	9	6
80	88.9	89	190	150	18	4	128	3	16	42	102		3.2	10	8
100	114.3	108	210	170	18	4	148	3	16	45	130		3.6	10	8
125	139.7	133	240	200	18	8	178	3	18	48	155		4.0	10	8
150	168.3	159	265	225	18	8	202	3	18	48	184		4.5	12	10
200	219.1	219	320	280	18	8	258	3	20	55	236		6.3	15	10
250	273	273	375	335	18	12	312	3	22	60	290		6.3	15	12
300	323.9	325	440	395	22	12	365	4	22	62	342		7.1	15	12
350	355.6	377	490	445	22	12	415	4	22	62	385	390	7.1	15	12
400	406.4	426	540	495	22	16	465	4	22	65	438	440	7.1	15	12
450	457	480	595	550	22	16	520	4	22	65	492	494	7.1	15	12
500	508	530	645	600	22	20	570	4	24	68	538	545	7.1	15	12
600	610	630	755	705	26	20	670	5	30	70	640	650	7.1	16	12
700	711	720	860	810	26	24	775	5	30	76	740	740	8.0	16	12
800	813	820	975	920	30	24	880	5	30	76	842	844	8.0	16	12
900	914	920	1075	1020	30	24	980	5	34	78	942	944	8.0	16	12
1000	1016	1020	1175	1120	30	28	1080	5	38	82	1045		8.0	16	16
1200	1219	1220	1405	1340	33	32	1295	5	42	104	1248		8.8	20	16
1400	1422	1420	1630	1560	36	36	1510	5	56	114	1452		8.8	20	16
1600	1626	1620	1830	1760	39	40	1710	5	63	119	1655		10.0	20	16
1800	1829	1820	2045	1970	42	44	1920	5	69	133	1855		11.0	20	16
2000	2032	2020	2265	2180	42	48	2125	5	74	146	2058		12.5	25	16
2200	2235	2220	2475	2390	42	52	2335	5	81	154	2260		14.0	25	18
2400	2438	2420	2685	2600	48	56	2545	5	87	168	2462		15.0	25	18
2600	2620		2905	2810	48	60	2750	5	91	175	2665		16.0	25	18
2800	2820		3115	3020	48	64	2960	5	101	188	2865		17.0	30	18
3000	3020		3315	3220	48	68	3160	5	102	192	3068		20.0	30	18
3200	3220		3525	3430	48	72	3370	5	106	202	3272		20.0	30	20
3400	3420		3735	3640	48	76	3580	5	110	214	3475		22.0	35	20
3600	3620		3970	3860	56	80	3790	5	124	229	3678		22.0	35	20

Dimensions of Weld Neck Flanges PN 10 EN 1092-1

DN	Pipe OD, A		Outside Diameter, D	Diameter of Bolt Circle, K	Diameter of Bolt Holes, L	No. of bolts	Diameter of Raised Face, d	Height of Raised Face, f1	Flange thickness, C	Length of Flange, H	Neck Diameter , N		Wall thickness, S	Length of right end, H1	Radius of Corners, r
DN	Series Ⅰ	Series Ⅱ	Outside Diameter, D	Diameter of Bolt Circle, K	Diameter of Bolt Holes, L	No. of bolts	Diameter of Raised Face, d	Height of Raised Face, f1	Flange thickness, C	Length of Flange, H	Series Ⅰ	Series Ⅱ	Wall thickness, S	Length of right end, H1	Radius of Corners, r
10	17.2	14	90	60	14	4	40	2	16	35	28		2.0	6	4
15	21.3	18	95	65	14	4	45	2	16	38	32		2.0	6	4
20	26.9	25	105	75	14	4	58	2	18	40	40		2.3	6	4
25	33.7	32	115	85	14	4	68	2	18	40	46		2.6	6	4
32	42.4	38	140	100	18	4	78	2	18	42	56		2.6	6	6
40	48.3	45	150	110	18	4	88	3	18	45	64		2.6	7	6
50	60.3	57	165	125	18	4	102	3	18	45	74		2.9	8	6
65	76.1	76	185	145	18	8	122	3	18	45	92		2.9	10	6
80	88.9	89	200	160	18	8	138	3	20	50	105		3.2	10	6
100	114.3	108	220	180	18	8	158	3	20	52	131		3.6	12	8
125	139.7	133	250	210	18	8	188	3	22	55	156		4.0	12	8
150	168.3	159	285	240	22	8	212	3	22	55	184		4.5	12	10
200	219.1	219	340	295	22	8	268	3	24	62	234		6.3	16	10
250	273	273	395	350	22	12	320	3	26	68	292		6.3	16	12
300	323.9	325	445	400	22	12	370	4	26	68	342		7.1	16	12
350	355.6	377	505	460	22	16	430	4	26	68	385	400	7.1	16	12
400	406.4	426	565	515	26	16	482	4	26	72	440	445	7.1	16	12
450	457	480	615	565	26	20	532	4	28	72	488	500	7.1	16	12
500	508	530	670	620	26	20	585	4	28	75	542	550	7.1	16	12
600	610	630	780	725	30	20	685	5	30	82	642	650	8.0	18	12
700	711	720	895	840	30	24	800	5	35	85	746		8.8	18	12
800	813	820	1015	950	33	24	905	5	38	96	850		8.8	18	12
900	914	920	1115	1050	33	28	1005	5	38	99	950		12.5	20	12
1000	1016	1020	1230	1160	36	28	1110	5	44	105	1052		12.5	20	16
1200	1219	1220	1455	1380	39	32	1330	5	55	132	1256		12.5	25	16
1400	1422	1420	1675	1590	42	36	1535	5	65	143	1460		14.2	25	16
1600	1626	1620	1915	1820	48	40	1760	5	75	159	1666		16.0	25	16
1800	1829	1820	2115	2020	48	44	1960	5	85	175	1868		17.5	30	16
2000	2032	2020	2325	2230	48	48	2170	5	90	186	2072		17.5	30	16
2200	2235		2550	2440	56	52	2370	5	100	202	2275		20.0	35	18
2400	2438		2760	2650	56	56	2570	5	110	218	2478		22.2	35	18
2600	2620		2960	2850	56	60	2780	5	110	224	2680		25.0	40	18
2800	2820		3180	3070	56	64	3000	5	124	244	2882		25.0	40	18
3000	3020		3405	3290	62	68	3210	5	132	257	3085		32.0	45	18

Dimensions of Weld Neck Flanges PN 16 EN 1092-1

DN	Pipe OD, A		Outside Diameter, D	Diameter of Bolt Circle, K	Diameter of Bolt Holes, L	No. of bolts	Diameter of Raised Face, d	Height of Raised Face, f1	Flange thickness, C	Length of Flange, H	Neck Diameter , N		Wall thickness, S	Length of right end, H1	Radius of Corners, r
DN	Series Ⅰ	Series Ⅱ	Outside Diameter, D	Diameter of Bolt Circle, K	Diameter of Bolt Holes, L	No. of bolts	Diameter of Raised Face, d	Height of Raised Face, f1	Flange thickness, C	Length of Flange, H	Series Ⅰ	Series Ⅱ	Wall thickness, S	Length of right end, H1	Radius of Corners, r
10	17.2	14	90	60	14	4	40	2	16	35	28		2	6	4
15	21.3	18	95	65	14	4	45	2	16	38	32		2	6	4
20	26.9	25	105	75	14	4	58	2	18	40	40		2.3	6	4
25	33.7	32	115	85	14	4	68	2	18	40	46		2.6	6	4
32	42.4	38	140	100	18	4	78	2	18	42	56		2.6	6	6
40	48.3	45	150	110	18	4	88	3	18	45	64		2.6	7	6
50	60.3	57	165	125	18	4	102	3	18	45	74		2.9	8	6
65	76.1	76	185	145	18	8	122	3	18	45	92		2.9	10	6
80	88.9	89	200	160	18	8	138	3	20	50	105		3.2	10	6
100	114.3	108	220	180	18	8	158	3	20	52	131		3.6	12	8
125	139.7	133	250	210	18	8	188	3	22	55	156		4	12	8
150	168.3	159	285	240	22	8	212	3	22	55	184		4.5	12	10
200	219.1	219	340	295	22	12	268	3	24	62	235		6.3	16	10
250	273	273	405	355	26	12	320	3	26	70	292		6.3	16	12
300	323.9	325	460	410	26	12	378	4	28	78	344		7.1	16	12
350	355.6	377	520	470	26	16	438	4	30	82	390	400	8	16	12
400	406.4	426	580	525	30	16	490	4	32	85	445	450	8	16	12
450	457	480	640	585	30	20	550	4	34	83	490	506	8	16	12
500	508	530	715	650	33	20	610	4	36	84	548	559	8	16	12
600	610	630	840	770	36	20	725	5	40	88	670	670	10	18	12
700	711	720	910	840	36	24	795	5	40	104	755	755	10	18	12
800	813	820	1025	950	39	24	900	5	62	108	855	855	12.5	20	12
900	914	920	1125	1050	39	28	1000	5	64	118	955	958	12.5	20	12
1000	1016	1020	1255	1170	42	28	1115	5	68	137	1058	1060	12.5	22	16
1200	1219	1220	1485	1390	48	32	1330	5	78	160	1262		14.2	30	16
1400	1422	1420	1685	1590	48	36	1530	5	84	177	1465		16	30	16
1600	1626	1620	1930	1820	56	40	1750	5	102	204	1668		17.5	35	16
1800	1829	1820	2130	2020	56	44	1950	5	110	218	1870		20	35	16
2000	2032	2020	2345	2230	62	48	2150	5	124	238	2072		22	40	16

Dimensions of Weld Neck Flanges PN 25 EN 1092-1

DN	Pipe OD, A		Outside Diameter, D	Diameter of Bolt Circle, K	Diameter of Bolt Holes, L	No. of bolts	Diameter of Raised Face, d	Height of Raised Face, f1	Flange thickness, C	Length of Flange, H	Neck Diameter , N		Wall thickness, S	Length of right end, H1	Radius of Corners, r
DN	Series Ⅰ	Series Ⅱ	Outside Diameter, D	Diameter of Bolt Circle, K	Diameter of Bolt Holes, L	No. of bolts	Diameter of Raised Face, d	Height of Raised Face, f1	Flange thickness, C	Length of Flange, H	Series Ⅰ	Series Ⅱ	Wall thickness, S	Length of right end, H1	Radius of Corners, r
10	17.2	14	90	60	14	4	40	2	16	35	28		2.0	6	4
15	21.3	18	95	65	14	4	45	2	16	38	32		2.0	6	4
20	26.9	25	105	75	14	4	58	2	18	40	40		2.3	6	4
25	33.7	32	115	85	14	4	68	2	18	40	46		2.6	6	4
32	42.4	38	140	100	18	4	78	2	18	42	56		2.6	6	6
40	48.3	45	150	110	18	4	88	3	18	45	64		2.6	7	6
50	60.3	57	165	125	18	4	102	3	20	48	75		2.9	8	6
65	76.1	79	185	145	18	8	122	3	22	52	90		2.9	10	6
80	88.9	89	200	160	18	8	138	3	24	58	105		3.2	12	8
100	114.3	108	235	190	22	8	162	3	24	65	134		3.6	12	8
125	139.7	133	270	220	26	8	188	3	26	68	162		4.0	12	8
150	168.3	159	300	250	26	8	218	3	28	75	192		4.5	12	10
200	219.1	219	360	310	26	12	278	3	30	80	244		6.3	16	10
250	273	273	425	370	30	12	335	3	32	88	298		7.1	18	12
300	323.9	325	485	430	30	16	395	4	34	92	352		8.0	18	12
350	355.6	377	555	490	33	16	450	4	38	100	398	406	8.0	20	12
400	406.4	426	620	550	36	16	505	4	40	110	452	464	8.8	20	12
450	457	480	670	600	36	20	555	4	46	110	500	514	8.8	20	12
500	508	530	730	660	36	20	615	4	48	125	558	570	10.0	20	12
600	610	630	845	770	39	20	720	5	48	125	660	670	11.0	20	12
700	711	720	960	875	42	24	820	5	50	129	760	766	14.2	20	12
800	813	820	1085	990	48	24	930	5	53	138	864	874	16.0	22	12
900	914	920	1185	1090	48	28	1030	5	57	148	968	974	17.5	24	12
1000	1016	1020	1320	1210	56	28	1140	5	63	160	1070	1074	20.0	24	16

Dimensions of Weld Neck Flanges PN 40 EN 1092-1

DN	Pipe OD, A		Outside Diameter, D	Diameter of Bolt Circle, K	Diameter of Bolt Holes, L	No. of bolts	Diameter of Raised Face, d	Height of Raised Face, f1	Flange thickness, C	Length of Flange, H	Neck Diameter , N		Wall thickness, S	Length of right end, H1	Radius of Corners, r
DN	Series Ⅰ	Series Ⅱ	Outside Diameter, D	Diameter of Bolt Circle, K	Diameter of Bolt Holes, L	No. of bolts	Diameter of Raised Face, d	Height of Raised Face, f1	Flange thickness, C	Length of Flange, H	Series Ⅰ	Series Ⅱ	Wall thickness, S	Length of right end, H1	Radius of Corners, r
10	17.2	14	90	60	14	4	40	2	16	35	28
15	21.3	18	95	65	14	4	45	2	16	38	32		2	6	4
20	26.9	25	105	75	14	4	58	2	18	40	40		2.3	6	4
25	33.7	32	115	85	14	4	68	2	18	40	46		2.6	6	4
32	42.4	38	140	100	18	4	78	2	18	42	56		2.6	6	6
40	48.3	45	150	110	18	4	88	3	18	45	64		2.6	7	6
50	60.3	57	165	125	18	4	102	3	20	48	75		2.9	8	6
65	76.1	76	185	145	18	8	122	3	22	52	90		2.9	10	6
80	88.9	89	200	160	18	8	138	3	24	58	105		3.2	12	8
100	114.3	108	235	190	22	8	162	3	24	65	134		3.6	12	8
125	139.7	133	270	220	26	8	188	3	26	68	162		4	12	8
150	168.3	159	300	250	26	8	218	3	28	75	192		4.5	12	10
200	219.1	219	375	320	30	12	285	3	34	88	244		6.3	16	10
250	273	273	450	385	33	12	345	3	38	105	306		7.1	18	12
300	323.9	325	515	450	33	16	410	4	42	115	362		8	18	12
350	355.6	377	580	510	36	16	465	4	46	125	408	418	8.8	20	12
400	406.4	4126	660	585	39	16	535	4	50	135	462	480	11	20	12
450	457	480	685	610	39	20	560	4	57	135	500	530	12.5	20	12
500	508	530	755	670	42	20	615	4	57	140	562	580	14.2	20	12
600	610	630	890	795	48	20	735	5	72	150	666	686	16	20	12

Dimensions of Weld Neck Flanges PN 63 EN 1092-1

DN	Pipe OD, A		Outside Diameter, D	Diameter of Bolt Circle, K	Diameter of Bolt Holes, L	No. of bolts	Diameter of Raised Face, d	Height of Raised Face, f1	Flange thickness, C	Length of Flange, H	Neck Diameter , N		Wall thickness, S	Length of right end, H1	Radius of Corners, r
DN	Series Ⅰ	Series Ⅱ	Outside Diameter, D	Diameter of Bolt Circle, K	Diameter of Bolt Holes, L	No. of bolts	Diameter of Raised Face, d	Height of Raised Face, f1	Flange thickness, C	Length of Flange, H	Series Ⅰ	Series Ⅱ	Wall thickness, S	Length of right end, H1	Radius of Corners, r
10	17.2	14	100	70	14	4	40	2	20	45	32
15	21.3	18	105	75	14	4	45	2	20	45	34		2	6	4
20	26.9	25	130	90	18	4	58	2	22	48	42		2.6	8	4
25	33.7	32	140	100	18	4	68	2	24	58	52		2.6	8	4
32	42.4	38	155	110	22	4	78	2	24	60	62		2.9	8	6
40	48.3	45	170	125	22	4	88	3	26	62	70		2.9	10	6
50	60.3	57	180	135	22	4	102	3	26	62	82		4	10	6
65	76.1	76	205	160	22	8	122	3	26	68	98		4	12	6
80	88.9	89	215	170	22	8	138	3	28	72	112		4.5	12	8
100	114.3	108	250	200	26	8	162	3	30	78	138		4.5	12	8
125	139.7	133	295	240	30	8	188	3	34	88	168		5.6	12	8
150	168.3	159	345	280	33	8	218	3	36	95	202		6.3	12	10
200	219.1	219	415	345	36	12	285	3	42	110	256		7.1	16	10
250	273	273	470	400	36	12	345	3	46	125	316		8.8	18	12
300	323.9	325	530	460	36	16	410	4	52	140	372		11	18	12
350	355.6	377	600	525	39	16	465	4	56	150	420	430	12.5	20	12
400	406.4	426	670	585	42	16	535	4	60	160	475	484	14.2	20	12

Dimensions of Weld Neck Flanges PN 100 EN 1092-1

DN	Pipe OD, A		Outside Diameter, D	Diameter of Bolt Circle, K	Diameter of Bolt Holes, L	No. of bolts	Diameter of Raised Face, d	Height of Raised Face, f1	Flange thickness, C	Length of Flange, H	Neck Diameter , N	Wall thickness, S	Length of right end, H1	Radius of Corners, r
DN	Series Ⅰ	Series Ⅱ	Outside Diameter, D	Diameter of Bolt Circle, K	Diameter of Bolt Holes, L	No. of bolts	Diameter of Raised Face, d	Height of Raised Face, f1	Flange thickness, C	Length of Flange, H	Neck Diameter , N	Wall thickness, S	Length of right end, H1	Radius of Corners, r
10	17.2	14	100	70	14	4	40	2	20	45	32	2	6	4
15	21.3	18	105	75	14	4	45	2	20	45	34	3.2	6	4
20	26.9	25	130	90	18	4	58	2	22	48	42	3.2	8	4
25	33.7	32	140	100	18	4	68	2	24	58	52	3.6	8	4
32	42.4	38	155	110	22	4	78	2	24	60	62	3.6	8	6
40	48.3	45	170	125	22	4	88	3	26	62	70	3.6	10	6
50	60.3	57	195	145	26	4	102	3	28	68	90	4	10	6
65	76.1	76	220	170	26	8	122	3	30	76	108	4	12	6
80	88.9	89	230	180	26	8	138	3	32	78	120	5	12	8
100	114.3	108	265	210	30	8	162	3	36	90	150	5.6	12	8
125	139.7	133	315	250	33	8	188	3	40	105	180	6.3	12	8
150	168.3	159	355	290	33	12	218	3	44	115	210	8	12	10
200	219.1	219	430	360	36	12	285	3	52	130	278	8.8	16	10
250	273	273	505	430	39	12	345	3	60	157	340	10	18	12
300	323.9	325	585	500	42	16	410	4	68	170	400	12.5	18	12
350	355.6	377	655	560	48	16	465	4	74	189	460	14.2	20	12

Dimensions of Weld Neck Flanges PN 160 EN 1092-1

DN	Pipe OD, A		Outside Diameter, D	Diameter of Bolt Circle, K	Diameter of Bolt Holes, L	No. of bolts	Diameter of Raised Face, d	Height of Raised Face, f1	Flange thickness, C	Length of Flange, H	Neck Diameter , N	Wall thickness, S	Length of right end, H1	Radius of Corners, r
DN	Series Ⅰ	Series Ⅱ	Outside Diameter, D	Diameter of Bolt Circle, K	Diameter of Bolt Holes, L	No. of bolts	Diameter of Raised Face, d	Height of Raised Face, f1	Flange thickness, C	Length of Flange, H	Neck Diameter , N	Wall thickness, S	Length of right end, H1	Radius of Corners, r
10	17.2	14	100	70	14	4	40	2	20	45	32	2	6	4
15	21.3	18	105	75	14	4	45	2	20	45	34	2	6	4
20	26.9	25	130	90	18	4	58	2	24	52	42	2.9	6	4
25	33.7	32	140	100	18	4	68	2	24	58	52	2.9	8	4
32	42.4	38	155	110	22	4	78	2	28	60	60	3.6	8	5
40	48.3	45	170	125	22	4	88	3	28	64	70	3.6	10	6
50	60.3	57	195	145	26	4	102	3	30	75	90	4	10	6
65	76.1	76	220	170	26	8	122	3	34	82	108	5	12	6
80	88.9	89	230	180	26	8	138	3	36	86	120	6.3	12	8
100	114.3	108	265	210	30	8	162	3	40	100	150	8	12	8
125	139.7	133	315	250	33	8	188	3	44	115	180	10	14	8
150	168.3	159	355	290	33	12	218	3	50	128	210	12.5	14	10
200	219.1	219	430	360	36	12	285	3	60	140	278	16	16	10
250	273	273	515	430	42	12	345	3	68	155	340	20	18	12
300	323.9	325	585	500	42	16	410	4	78	175	400	22.2	18	12

Dimensions of Weld Neck Flanges PN 250 EN 1092-1

DN	PipeOD,A	Outside Diameter, D	Diameter of Bolt Circle, K	Diameter of Bolt Holes, L	No. of bolts	Diameter of Raised Face, d	Height of Raised Face, f1	Flange thickness, C	Length of Flange, H	Neck Diameter , N	Wall thickness, S	Length of right end, H1	Radius of Corners, r
10	17.2	125	85	18	4	40	2	24	58	44	2.6	6	4
15	21.3	130	90	18	4	45	2	26	60	48	2.6	6	4
20	26.9	135	95	18	4	58	2	28	62	54	3.2	8	4
25	33.7	150	105	22	4	68	2	28	65	60	3.6	8	4
32	42.4	165	120	22	4	78	2	32	70	72	4	8	4
40	48.3	185	135	26	4	88	3	34	80	84	5	10	6
50	60.3	200	150	26	8	102	3	38	85	95	6.3	10	6
65	76.1	230	180	26	8	122	3	42	95	124	8	12	6
80	101.6	255	200	30	8	138	3	46	102	136	11	12	8
100	127	300	235	33	8	162	3	54	120	164	14.2	14	8
125	152.4	340	275	33	12	188	3	60	140	200	16	16	8
150	177.8	390	320	36	12	218	3	68	160	240	17.5	18	10
200	244.5	485	400	42	12	285	3	82	190	305	25	25	10
250	298.5	585	490	48	16	345	3	100	215	385	32	30	12

Dimensions of Weld Neck Flanges PN 320 EN 1092-1

DN	Pipe OD, A	Outside Diameter, D	Diameter of Bolt Circle, K	Diameter of Bolt Holes, L	No. of bolts	Diameter of Raised Face, d	Height of Raised Face, f1	Flange thickness, C	Length of Flange, H	Neck Diameter , N	Wall thickness, S	Length of right end, H1	Radius of Corners, r
10	17.2	125	85	18	4	40	2	24	58	44	2.6	6	4
15	21.3	130	90	18	4	45	2	26	60	48	3.2	6	4
20	26.9	145	100	22	4	58	2	30	70	58	4	8	4
25	33.7	160	115	22	4	68	2	34	78	68	5	8	4
32	42.4	175	130	26	4	78	2	36	83	80	5.6	8	4
40	48.3	195	145	26	4	88	3	38	88	92	6.3	10	6
50	60.3	210	160	26	8	102	3	42	100	106	8	10	6
65	88.9	255	200	30	8	122	3	51	120	138	11	12	6
80	101.6	275	220	30	8	138	3	55	130	156	12.5	14	8
100	133	335	265	36	8	162	3	65	145	186	16	16	8
125	168.3	380	310	36	12	188	3	75	175	230	20	20	8
150	193.7	425	350	39	12	218	3	84	195	265	25	25	10
200	244.5	525	440	42	16	285	3	103	235	345	30	30	10
250	323.9	640	540	52	16	345	3	125	300	428	40	40	12

Dimensions of Weld Neck Flanges PN 400 EN 1092-1

DN	Pipe OD, A	Outside Diameter, D	Diameter of Bolt Circle, K	Diameter of Bolt Holes, L	No. of bolts	Diameter of Raised Face, d	Height of Raised Face, f1	Flange thickness, C	Length of Flange, H	Neck Diameter , N	Wall thickness, S	Length of right end, H1	Radius of Corners, r
10	17.2	125	85	18	4	40	2	28	65	48	3.6	8	4
15	26.9	145	100	22	4	45	2	30	68	56	5	8	4
20	33.7	160	115	22	4	58	2	34	80	70	6.3	10	4
25	42.4	180	130	26	4	68	2	38	90	82	7.1	10	4
32	48.3	200	145	26	4	78	2	43	100	94	8.8	12	6
40	60.3	220	165	30	4	88	3	48	110	106	10	12	6
50	76.1	235	180	30	8	102	3	52	120	120	12.5	15	6
65	101.6	290	225	33	8	122	3	64	135	158	16	18	6
80	114.3	305	240	33	8	138	3	68	150	174	17.5	20	8
100	139.7	370	295	39	8	162	3	80	175	216	22.2	25	8
125	193.7	415	340	39	12	188	3	92	200	258	30	30	8
150	219.1	475	390	42	12	218	3	105	225	302	35	35	10
200	273	585	490	48	16	285	3	130	280	388	40	40	10