Germany standard flange DIN 2638 welding neck flanges

Germany standard flange DIN 2638 welding neck flanges; nominal pressure 160
Pipe			Flange				Neck				Raised Face		Drilling				Approx. Weight (7.85 kg/dm3) kg
Nominal Size	d1		D	b	k	h1	d3	s	r1	h2	d4	f	Number of Holes	Bolt Diameter		d2
	ISO Series	DIN Series
10		14	100	20	70	45	28	2	4	6	40	2	4	M12	(1/2″)	14	1.09
	17.2						32
15		20	105	20	75	45	32	2	4	6	45	2	4	M12	(1/2″)	14	1.19
	21.3						34
25		30	140	24	100	58	48	2.9	4	8	65	2	4	M16	(5/8″)	18	2.66
	33.7						52
40		44.5	170	28	125	64	65	3.6	6	10	85	3	4	M20	(3/4″)	23	4.3
	48.3						70
50		57	195	30	145	75	86	4	6	10	95	3	4	M24	(7/8″)	27	6.25
	60.3						90
65	7.61	7.61	220	34	170	82	108	5	6	12	105	3	8	M24	(7/8″)	27	8.35
80	88.9	88.9	230	36	180	86	120	6.3	8	12	125	3	8	M24	(7/8″)	27	9.75
100		108	265	40	210	100	145	8	8	12	145	3	8	M27	(1″)	30	14.8
	114.3						150
125		146	315	44	250	115	180	10	8	14	185	3	8	M30	(1 1/8″)	33	23
	139.7
150		171	355	50	290	128	210	12.5	10	14	215	3	12	M30	(1 1/8″)	33	32.5
	168.3
-175		191	390	54	320	138	245	14.2	10	16	235	3	12	M33	(1 1/4″)	36	43.5
	193.7
200		216	430	60	360	140	278	16	10	16	260	3	12	M33	(1 1/4″)	36	59.4
	219.1
250		267	515	68	430	155	340	20	12	18	325	3	12	M39	(1 1/2″)	42	94.5
	273
300		318	585	78	500	175	400	22.2	12	18	375	4	16	M39	(1 1/2″)	42	136

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