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Eng-Calculations

Dimensions of PN 160 flanges

This diagram illustrates the arrangement but not necessarily the correct number of bolt holes

Flange type 05

Flange type 11

Flange type 21

DN	Outside diameter $ D $ , in $ \mathrm{mm} $	Diameter of bolt circle $ K $ , in $ \mathrm{mm} $	Diameter of bolt hole $ L $ , in $ \mathrm{mm} $	Number of bolts	Bolts size	Outside diameter of neck $ A $ , in $ \mathrm{mm} $	Flange thickness $ C_4 $ , in $ \mathrm{mm} $	Flange thickness $ C_2 $ , in $ \mathrm{mm} $	Flange thickness $ C_3 $ , in $ \mathrm{mm} $	Centre portion $ G_{max} $ , in $ \mathrm{mm} $	Length $ H_2 $ , in $ \mathrm{mm} $	Length $ H_3 $ , in $ \mathrm{mm} $	Neck diameters $ N_1 $ , in $ \mathrm{mm} $	Neck diameters $ N_3 $ , in $ \mathrm{mm} $	Corner radius $ R_1 $ for flange type 11, in $ \mathrm{mm} $	Corner radius $ R_1 $ for flange type 21, in $ \mathrm{mm} $
10	100	70	14	4	M12	17.2	20	20	20	-	45	6	32	40	4	4
15	105	75	14	4	M12	21.3	20	20	20	-	45	6	34	45	4	4
25	140	100	18	4	M16	33.7	24	24	24	-	58	8	52	61	4	4
40	170	125	22	4	M20	48.3	28	28	28	-	64	10	70	82	6	4
50	195	145	26	4	M24	60.3	30	30	30	-	75	10	90	96	6	4
65	220	170	26	8	M24	76.1	34	34	34	42	82	12	108	118	6	5
80	230	180	26	8	M24	88.9	36	36	36	55	86	12	120	128	8	5
100	265	210	30	8	M27	114.3	40	40	40	74	100	12	150	150	8	5
125	315	250	33	8	M30	139.7	44	44	44	98	115	14	180	184	8	6
150	355	290	33	12	M30	168.3	50	50	50	119	128	14	210	224	10	6
200	430	360	36	12	M33	219.1	62	60	60	168	140	16	278	288	10	8
250	515	430	42	12	M39	273	72	68	68	195	155	18	340	346	12	8
300	585	500	42	16	M39	323.9	84	78	78	235	175	18	400	414	12	10