DN	outside diameter D , in mm	diameter of bolt circle K , in mm	diameter of bolt hole L , in mm	number of bolts	bolts size	outside diameter of neck A , in mm	flange thickness C_4 , in mm	flange thickness C_2 , in mm	flange thickness C_3 , in mm	centre portion G_max , in mm	length H_2 , in mm	length H_3 , in mm	neck diameters N_1 , in mm	neck diameters N_3 , in mm	corner radius R_1 for flange type 11, in mm	corner radius R_1 for flange type 21, in mm
10	125	85	18	4	M16	-	-	-	24	-	-	-	-	46	-	4
15	130	90	18	4	M16	21.3	26	26	26	-	60	6	48	52	4	4
25	150	105	22	4	M20	33.7	28	28	28	-	65	8	60	63	4	4
40	185	135	26	4	M24	48.3	34	34	34	-	80	10	84	90	6	4
50	200	150	26	8	M24	60.3	38	38	38	-	85	10	95	102	6	5
65	230	180	26	8	M24	76.1	42	42	42	36	95	12	124	125	6	5
80	255	200	30	8	M27	101.6	46	46	46	46	102	12	136	142	8	6
100	300	235	33	8	M30	127	54	54	54	62	120	14	164	168	8	6
125	340	275	33	12	M30	152.4	60	60	60	86	140	16	200	207	8	6
150	390	320	36	12	M33	177.8	68	68	68	109	160	18	240	246	10	8
200	485	400	42	12	M39	244.5	85	82	82	150	190	25	305	314	10	8
250	585	490	48	16	M45	298.5	104	100	100	171	215	30	385	394	12	10
300	690	590	52	16	M48	-	-	-	120	-	-	-	-	480	-	10