ANSI Plate Flange Dimensions

Nominal Pipe Size	Approx.Weight	Thk of Flange	Diameter of Pipe		Flange I.D	No. of holes	Flange Dia	Dia of Bolt Circle	Dia of Bolt Holes
DN	KG/PCS	b	ISO	DIN	D5	BN	D	K	d2
10	0.7	16	–	14	14.5	4	90	60	14
10	0.69	16	17.2	–	17.7	4	90	60	14
15	0.77	16	–	20	21	4	95	65	14
15	0.77	16	21.3	–	22	4	95	65	14
20	1.06	18	–	25	26	4	105	75	14
20	1.05	18	26.9	–	27.6	4	105	75	14
25	1.27	18	–	30	31	4	115	85	14
25	1.25	18	33.7	–	34.4	4	115	85	14
32	1.86	18	–	38	39	4	140	100	18
32	1.83	18	42.4	–	43.1	4	140	100	18
40	2.12	18	–	44.5	45.5	4	150	110	18
40	2.09	18	48.3	–	49	4	150	110	18
50	2.78	20	–	57	58.1	4	165	125	18
50	2.74	20	60.3	–	61.1	4	165	125	18
65	3.48	22	76.1	–	77.1	8	185	145	18
80	4.33	24	88.9	–	90.3	8	200	160	18
100	5.82	24	–	108	109.6	8	235	190	22
100	5.61	24	114.3	–	115.9	8	235	190	22
125	7.91	26	–	133	134.8	8	270	220	26
125	7.6	26	139.7	–	141.6	8	270	220	26
150	10.12	28	–	159	161.1	8	300	250	26
150	9.58	28	168.3	–	170.5	8	300	250	26
175	14.45	32	193.7	–	196.1	12	350	295	30
200	16.9	34	219.1	–	221.8	12	375	320	30
250	27.28	38	–	267	270.2	12	450	385	33
250	26.51	38	273	–	276.2	12	450	385	33
300	36.38	42	323.9	–	327.6	16	515	450	33
350	52.83	46	355.6	–	359.7	16	580	510	36
350	50.24	46	–	368	372.2	16	580	510	36
400	74.71	50	406.4	–	411	16	660	585	39
400	71.44	50	–	419	423.7	16	660	585	39
500	86.87	52	508	–	513.6	20	755	670	42
600	121.84	54	610	–	616.5	20	890	795	48
700	150.93	58	711	–	716	24	995	900	48
800	219.08	64	813	–	818	24	1140	1030	56
900	271.16	70	914	–	920	28	1250	1140	56
1000	344.95	78	1016	–	1022	28	1360	1250	56