Types of flanges (typ) up to DIN EN 1092-1

Typ 01: Plate (slip-on) flanges for welding	Typ 13: Hubbed threaded flanges
Typ 02: Loose plate flanges with weld-on plate collar	Typ 21: Integral flanges
Typ 04: Loose plate flanges with weld-neck collar	Typ 32: Weld-on plate collars
Typ 05: Blank (blind) flanges	Typ 33: Lapped pipe ends
Typ 11: Weld-neck flanges	Typ 34: Weld-neck collars
Typ 12: Hubbed slip-on flanges for welding

D: Outside Diameter K: Diameter of Bolt Circle L: Diameter of Bolt Hole

A: Outside Diameter of Neck E: Chamfer F: Collar thickness

G max: Diameter of Shoulders R: Corner Radius N: Neck Diameter S: Neck Thickness (Preferred value)

DN	Mating dimensions					A	Flange Thickness		Length		Neck Diameters		R1		S
	D	K	L	Bolting
				No	Size		C2	C3	H2	H3	N1	N3
	Flange type
	11, 21					11 21*	11	21	11	11	11	21	11	21	11
10	100	70	14	4	M12	17.2	20	20	45	6	32	40	4	4	2.0
15	105	75	14	4	M12	21.3	20	20	45	6	34	45	4	4	2.0
25	140	100	18	4	M16	33.7	24	24	58	8	52	61	4	4	2.9
40	170	125	22	4	M20	48.3	28	28	64	10	70	82	6	4	3.6
50	195	145	26	4	M24	60.3	30	30	75	10	90	96	6	4	4.0
65	220	170	26	8	M24	76.1	34	34	82	12	108	118	6	5	5.0
80	230	180	26	8	M24	88.9	36	36	86	12	120	128	8	5	6.3
100	265	210	30	8	M27	114.3	40	40	100	12	150	150	8	5	8.0
125	315	250	33	8	M30	139.7	44	44	115	14	180	184	8	6	10.0
150	355	290	33	12	M30	168.3	50	50	128	14	210	224	10	6	12.5
200	430	360	36	12	M33	219.1	60	60	140	16	278	288	10	8	16.0
250	515	430	42	12	M39	273.0	68	68	155	18	340	346	12	8	20.0
300	585	500	42	16	M39	323.9	78	78	175	18	400	414	12	10	22.2

* For flanges type 21 the outside hub diameter approximately corresponds to the outside pipe diameter.