KS B1503 20k Flange Dimensions

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Nominal Diameter of Flanges	Outside Diameter of Flanges D	flange Sectional Dimensions														Reference
		Diameter of Bolt Circle C	Diameter Of raised Face g	Inside DaimeterOf Flanges do	O.D. of Steel pipe	t	T	Hub Diameter		Radius r	f	D	Bolt Holes Number	Holes Dia. H	SIZE Of Bolt	S1	M	S2	N	L
								a	b
10	90	65	46	17.8	17.3	14	20	30	32	4	1	–	4	15	M12	27	4	27	4	–
15	95	70	51	22.2	21.7	14	20	34	36	4	1	–	4	15	M12	31	4	31	4	–
20	100	75	56	27.7	27.2	16	22	40	42	4	1	–	4	15	M12	37	4	37	4	–
25	125	90	67	34.5	34	16	24	48	50	4	1		4	19	M16	44	4	44	4.5	–
32	135	100	76	43.2	42.7	18	26	56	60	5	2	–	4	19	M16	52	4	53	5	–
40	140	105	81	49.1	48.6	18	26	62	66	5	2	–	4	19	M16	58	4	59	5.5	–
50	155	120	96	61.1	60.5	18	26	76	80	5	2	–	8	19	M16	70	4	72	5.5	–
65	175	140	116	77.7	76.3	20	30	100	104	5	2	65.9	8	19	M16	94	6	–	–	6
80	200	160	132	90	89.1	22	34	113	117	6	2	78.1	8	23	M20	107	6	–	–	6
-90	210	170	145	102.6	101.6	24	36	126	130	6	2	90.2	8	23	M20	120	6	–	–	6
100	225	185	160	115.4	114.3	24	36	138	142	6	2	102.3	8	23	M20	132	6	–	–	6
125	270	225	195	141.2	139.8	26	40	166	172	6	2	126.6	8	25	M22	160	7	–	–	6
150	305	260	230	166.6	165.2	28	42	196	202	6	2	151	12	25	M22	186	8	–	–	6
200	350	305	275	218	216.3	30	46	244	252	6	2	199.9	12	25	M22	237	9	–	–	6
250	430	380	345	269.5	267.4	34	52	304	312	6	2	248.8	12	27	M24	290	10	–	–	6
300	480	430	395	321	318.5	36	56	354	364	8	3	297.9	16	27	M24	345	11	–	–	6
350	540	480	440	358.1	355.6	40	62	398	408	8	3	333.4	16	33	M30X3	384	12	–	–	6
400	605	540	495	409	406.4	46	70	446	456	10	3	381	16	33	M30X3	437	13	–	–	7
450	675	605	560	460	457.2	48	78	504	514	10	3	431.8	20	33	M30X3	490	15	–	–	7
500	730	660	615	511	508	50	84	558	568	10	3	482.6	20	33	M30X3	544	16	–	–	7
-550	795	720	670	562	558.8	52	90	612	622	10	3	533.4	20	39	M36X3	595	16	–	–	7
600	845	770	720	613	609.6	54	96	666	676	10	3	584.2	24	39	M36X3	646	18	–	–	7
*650	945	850	790	664	660.4	60					5		24	48	M45X3
*700	995	900	840	715	711.2	64					5		24	48	M45X3
*750	1080	970	900	766	762	68					5		24	56	M52X3
*800	1140	1030	960	817	812.8	72					5		24	56	M52X3
*850	1200	1090	1020	868	863.6	74					5		24	56	M52X3
*900	1250	1140	1070	919	914.4	76					5		28	56	M52X3

KS B1503 20k Flange Industries and Applications
Widely used in the industries

KS B1503 20k Flange Supply and Export Network
List of Cities and Countries