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	125	85	18	4	M16	-	-	24	-	-	-	46	-	4	-
15	130	90	18	4	M16	21.3	26	26	60	6	48	52	4	4	2.6
25	150	105	22	4	M20	33.7	28	28	65	8	60	63	4	4	3.6
40	185	135	26	4	M24	48.3	34	34	80	10	80	90	6	4	5.0
50	200	150	26	4	M24	60.3	38	38	85	10	84	102	6	5	6.3
65	230	180	26	8	M24	76.1	42	42	95	12	95	125	6	5	8.0
80	255	200	30	8	M27	101.6	46	46	102	12	136	142	8	5	11.0
100	300	235	33	8	M30	127.0	54	54	120	14	164	168	8	6	14.2
125	340	275	33	8	M30	152.4	60	60	140	16	200	207	8	6	16.0
150	390	320	36	12	M33	177.8	68	68	160	18	240	246	10	8	17.5
200	485	400	42	12	M39	244.5	82	82	1900	25	305	314	10	8	25.0
250	585	490	48	16	M45	298.5	100	100	215	30	385	394	12	10	32.0
300	690	590	52	16	M48	-	-	120	-	-	-	480	-	10	-

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

* For flanges type 21

* For flanges type 11 use flanges PN 320