Various specifications flange size standard

nominal diameter	Outer diameter of pipe (flange inner diameter)	lawblueplate											weldingconnected			Snailbolt
		Maximum distance between pipe outside diameter and flange inside diameter	flange outer diameter and tolerance	Bolt center distance diameter and tolerance	Attachable Flange		sealing surface			flange thickness and tolerance	Bolt hole diameter and tolerance	flange weight(Kg)	Weld height	Minimum wall thickness	Flange tube end distance	Quantity	thread	length
			flange outer diameter and tolerance	Bolt center distance diameter and tolerance	diameter	height	the distance between the grooves	Groove width	Groove	flange thickness and tolerance	Bolt hole diameter and tolerance	flange weight(Kg)	Weld height	Minimum wall thickness	Flange tube end distance	Quantity	thread	length
Dg	dh		D	D1	D2	h	g	g1		B	d	Q	K	S	H	n		e
10	14	0.43	900.87	600.74	40	2	4	1	2	120.43	140.43	0.46	3	3	4	4	M12	45
15	18	0.52	950.87	650.74	45	2	4	1	2	120.43	140.43	0.61	3	3	4	4	M12	45
20	25	0.52	1050.87	750.74	58	2	4	1	2	140.43	140.43	0.75	3	3	4	4	M12	45
25	32	0.62	1150.87	850.87	68	2	4	1	2	140.43	140.43	0.89	4	3.5	5	4	M12	45
32	38	0.62	1351.0	1000.87	78	2	4	1	2	160.43	180.52	1.40	4	3.5	5	4	M16	55
40	45	0.62	1451.0	1100.89	88	3	4	1	2	180.52	180.52	1.71	4	3.5	5	4	M16	60
50	57	0.74	1601.0	1251.0	102	3	4	1	2	180.52	180.52	2.09	4	3.5	5	4	M16	60
70	76	0.74	1801.15	1451.0	122	3	4	1	2	200.52	180.52	2.84	5	4	6	4	M16	65
80	89	0.87	1951.15	1601.0	138	3	5	1	3	200.52	180.52	3.24	5	4	6	4	M16	65
100	108	0.87	2151.15	1801.15	158	3	5	1	3	220.52	180.52	4.01	5	4	6	8	M16	70
125	133	1.0	2451.15	2101.15	188	3	5	1	3	240.52	180.52	5.40	5	4	6	8	M16	70
150	159	1.0	2801.35	2401.15	212	3	5	1	3	240.52	230.52	6.12	5	4.5	6	8	M20	75
200	219	1.0	3351.35	2951.35	268	3	5	1	3	240.52	230.52	8.24	7	6	8	8	M20	75
250	273	1.0	3901.55	3501.35	320	3	5	1	3	260.52	230.52	10.7	9	8	10	12	M20	80
300	325	1.0	4401.55	4001.55	370	4	5	1	3	280.52	230.52	12.9	9	8	10	12	M20	90
350	377	1.0	5001.8	4601.55	430	4	5	1	3	280.52	230.52	15.7	10	9	11	16	M20	90
400	426	1.0	5651.8	5151.8	482	4	5	1	3	300.62	250.52	21.8	10	9	11	16	M22	90
450	478	2.0	6151.8	5651.8	532	4	5	1	3	300.6	250.52	24.4	10	9	11	20	M22	90
500	529	2.0	6702.0	6201.8	585	4	5	1	3	320.62	250.52	27.7	10	9	11	20	M22	100
600	630	2.0	7802.0	7251.8	685	5	5	1	3	360.62	300.52	39.4	10	9	11	20	M27	100

Welded Flat Steel Flange(Pg=10Kg/cm2)

Unit(mm)

Welded Flat Steel Flange(Pg=1Kg/cm2)

Nominal diameter of pipe	Outer diameter of pipe (flange inner diameter)	lawblueplate										flange weight
		Maximum distance between pipe outside diameter and flange inside diameter	Bolt center distance diameter and tolerance	flange outer diameter and tolerance	Flange thickness and tolerance	bolt hole		Bolt Diameter and Tolerance	welding gap	Weld height
			Bolt center distance diameter and tolerance	flange outer diameter and tolerance	Flange thickness and tolerance	aperture	bolts	Bolt Diameter and Tolerance	welding gap	Weld height
Dg	d0	e	D1	D	B	d			H	K1	K2	(Kg)
200	219	1	295	335	18	23	8	M20	8	6	8	6.7
258	273	1	350	390	20	23	12	M20	8	6	8	8.2
300	325	1	395	435	20	23	12	M20	8	6	10	9.3
350	377	1.5	445	485	20	23	12	M20	8	6	10	9.9
400	426	1.5	495	535	20	23	16	M20	8	6	10	11.2
450	478	1.5	550	590	20	23	16	M20	8	6	10	13
500	529	1.5	600	640	20	23	16	M20	8	6	10	14.1
600	630	1.5	705	755	20	25	20	M22	8	6	10	18.9
700	720	1.5	810	860	20	25	24	M27	8	6	10	24.4
800	820	2	920	975	20	30	24	M27	8	6	10	30.4
900	920	2	1020	1075	20	30	24	M27	10	8	10	34
1000	1020	2	1120	1175	20	30	28	M27	10	8	10	37.2
1100	1120	2	1220	1280	24	30	32	M27	10	8	10	53.8
1200	1220	2	1340	1400	24	34	32	M30	10	8	10	61.4
1300	1320	2.5	1440	1500	24	34	32	M30	10	8	10	66.4
1400	1420	2.5	1560	1620	24	34	36	M30	10	8	12	80.4
1500	1520	2.5	1660	1720	24	34	36	M30	10	8	12	86
1600	1620	2.5	1760	1820	24	34	40	M30	10	8	12	91
1800	1820	2.5	1970	2045	24	41	44	M36	10	8	12	113
2000	2020	2.5	2180	2265	28	48	48	M42	10	8	12	156
2200	2220	2.5	2390	2475	28	48	52	M42	10	8	12	176
2400	2420	2.5	2600	2685	28	48	56	M42	10	8	12	204

Unit(mm) Figure No.:1B503-3

Welded Flat Steel Flange(Pg= 6Kg/cm2)

Unit(mm)

nominal diameter	Outer diameter of pipe (flange inner diameter)	lawblueplate											weldingconnected			Snailbolt
		Maximum distance between pipe outside diameter and flange inside diameter	flange outer diameter and tolerance	Bolt center distance diameter and tolerance	Attaching Flange		sealing surface			flange thickness and tolerance	Bolt hole diameter and tolerance	flange weight(Kg)	Weld height	Minimum wall thickness	Flange tube end distance	Quantity	thread	length
			flange outer diameter and tolerance	Bolt center distance diameter and tolerance	diameter	height	the distance between grooves	Groove width	Groove	flange thickness and tolerance	Bolt hole diameter and tolerance	flange weight(Kg)	Weld height	Minimum wall thickness	Flange tube end distance	Quantity	thread	length
Dg	dh		D	D1	D2	h	g	g1		B	d	Q	K	S	H	n		e
10	14	0.43	750.74	500.74	35	2	4	1	2	120.43	120.43	0.31	3	3	4	4	M10	40
15	18	0.52	800.87	550.74	40	2	4	1	2	120.43	120.43	0.34	3	3	4	4	M10	40
20	25	0.52	900.97	650.74	50	2	4	1	2	140.43	120.43	0.54	3	3	4	4	M10	45
25	32	0.62	1000.87	750.74	60	2	4	1	2	140.43	120.43	0.64	4	3.5	5	4	M10	45
32	38	0.62	1201.0	900.87	70	2	4	1	2	160.43	140.43	1.10	4	3.5	5	4	M12	50
40	45	0.62	1301.0	1000.87	80	3	4	1	2	160.43	140.43	1.22	4	3.5	5	4	M12	50
50	57	0.74	1401.0	1100.87	90	3	4	1	2	160.43	140.43	1.35	4	3.5	5	4	M12	50
70	76	0.74	1601.0	1301.0	110	3	4	1	2	160.43	140.43	1.67	5	4	6	4	M12	50
80	89	0.87	1851.10	1501.0	128	3	5	1	3	180.52	180.52	2.48	5	4	6	4	M16	60
100	108	0.87	2051.15	1701.0	148	3	5	1	3	180.52	180.52	2.89	5	4	6	4	M16	60
125	133	1.0	2351.15	2001.15	178	3	5	1	3	200.52	180.52	3.94	5	4	6	8	M16	65
160	159	1.0	2601.35	2251.15	202	3	5	1	3	200.52	180.52	4.47	5	4.5	6	8	M16	65
200	219	1.0	3151.35	2801.35	258	3	5	1	3	220.52	180.52	8.07	7	6	8	8	M16	70
250	273	1.0	3701.55	3351.35	312	3	5	1	3	240.52	180.52	8.03	9	8	10	12	M16	70
300	325	1.0	4351.65	3951.55	365	4	5	1	3	240.52	230.52	10.3	9	8	10	12	M20	75
350	379	1.0	4851.59	4451.55	415	4	5	1	3	260.52	230.52	12.6	10	9	11	12	M20	80
400	426	1.0	5351.8	4951.55	465	4	5	1	3	280.52	230.52	15.2	10	9	11	16	M20	90
450	478	2.0	5901.8	5501.8	520	4	5	1	3	280.52	230.52	17.6	10	9	11	16	M20	90
500	529	2.0	6402.0	6001.8	570	4	5	1	3	300.52	230.52	20.7	10	9	11	16	M20	90
600	630	2.0	7552.0	7052.0	670	5	5	1	3	300.62	250.52	26.6	10	9	11	20	M22	90
700	720	2.0	8602.2	8102.2	775	5	6	1.5	3	320.62	250.52	37.1	10	9	11	24	M22	100
800	820	2.0	9752.2	9202.2	880	5	6	1.5	3	320.62	300.62	46.2	10	9	11	24	M27	100
900	920	2.0	10752.4	10202.4	980	5	6	1.5	3	340.62	300.62	55.1	10	9	11	24	M27	110
1000	1020	2.0	11752.4	11202.4	1080	5	6	1.5	3	360.62	300.62	57.3	10	9	11	28	M27	110

Welded Flat Steel Flange(Pg= 16Kg/cm2)

Unit(mm) Figure No.:1standard2001

nominal diameter	Outer diameter of pipe (flange inner diameter)	lawblueplate											weldingconnected			Snailbolt
		Maximum distance between pipe outside diameter and flange inside diameter	flange outer diameter and tolerance	Bolt center distance diameter and tolerance	Attachable Flange		sealing surface			Flange thickness and tolerance	Bolt hole diameter and tolerance	flange weight(Kg)	Weld height	Minimum wall thickness	Flange tube end distance	Quantity	thread	Length
			flange outer diameter and tolerance	Bolt center distance diameter and tolerance	diameter	height	the distance between the grooves	Groove width	groove number	Flange thickness and tolerance	Bolt hole diameter and tolerance	flange weight(Kg)	Weld height	Minimum wall thickness	Flange tube end distance	Quantity	thread	Length
Dg	dh		D	D1	D2	h	g	g1		B	d	Q	K	S	H	n		e
10	14	0.43	900.87	600.74	40	2	4	1	2	140.43	140.43	0.55	3	3	4	4	M12	45
15	18	0.52	950.87	650.74	45	2	4	1	2	140.43	140.43	0.71	3	3	4	4	M12	45
20	25	0.52	1050.87	750.74	58	2	4	1	2	160.43	140.43	0.87	3	3	4	4	M12	50
25	32	0.62	1150.87	850.87	68	2	4	1	2	180.52	140.43	1.17	4	3.5	5	4	M12	55
32	38	0.62	1351.0	1000.87	78	2	5	1	3	180.52	180.52	1.60	4	3.5	5	4	M16	60
40	45	0.62	1451.0	1100.89	88	3	5	1	3	200.52	180.52	2.00	4	3.5	5	4	M16	65
50	57	0.74	1601.0	1251.0	102	3	5	1	3	220.52	180.52	2.61	4	3.5	5	4	M16	70
70	76	0.74	1801.15	1451.0	122	3	5	1	3	240.52	180.52	3.45	5	4	6	4	M16	70
80	89	0.87	1951.15	1601.0	138	3	5	1	3	240.52	180.52	3.71	5	4	6	8	M16	70
100	108	0.87	2151.15	1801.15	158	3	5	1	3	260.52	180.52	4.8	5	4	6	8	M16	75
125	133	1.0	2451.15	2101.15	188	3	5	1	3	280.52	180.52	6.47	5	4	6	8	M16	80
150	159	1.0	2801.35	2401.15	212	3	5	1	3	280.52	230.52	7.92	5	4.5	6	8	M20	90
200	219	1.0	3351.35	2951.35	268	3	5	1	3	300.62	230.52	10.1	7	6	8	12	M20	90
250	273	1.0	4051.55	3551.35	320	3	5	1	3	320.62	250.52	15.7	9	8	10	12	M22	100
300	325	1.0	4601.55	4101.59	378	4	6	1.5	3	320.62	250.62	18.1	9	8	10	12	M22	100
350	379	1.0	5201.8	4701.56	438	4	6	1.5	3	340.62	250.52	23.3	10	9	11	12	M22	100
400	426	1.0	5801.8	5251.8	490	4	6	1.5	3	380.62	300.52	31.0	10	9	11	16	M27	110
450	478	2.0	6402.0	5851.8	550	4	6	1.5	3	420.62	300.62	40.2	10	9	11	20	M27	120
500	529	2.0	7052.0	6502.0	610	4	6	1.5	3	480.62	340.62	55.1	10	9	11	20	M30	140
600	630	2.0	8402.2	7102.0	720	5	6	1.5	4	500.62	410.62	80.3	10	9	11	22	M36	150

Welded Flat Steel Flange(Pg= 25Kg/cm2)

Unit(mm) Figure No.:1standard3795

nominal diameter	Protruded length of connecting pipe	connecting pipe				flange plate					reinforcing ring									welding	bolt		Weight(Kg)
		Diameter of connecting pipe	wall thickness	whenR=350	the distance between the protruding part of the flange plate and the end of the pipe	outside diameter	Bolt circle diameter	Sealing surface diameter	the thickness of the flange	the diameter of the bolt hole	outside diameter	Thickness of equipment wall									Quantity	diameter	ringm=10mm	pipelong100mm	flange plate
		Diameter of connecting pipe	wall thickness	whenR=350		outside diameter	Bolt circle diameter	Sealing surface diameter	the thickness of the flange	the diameter of the bolt hole	outside diameter	8	10	12	14	16	18	20	22
Dg	h	d	s	a	n	D	K	g	L	e	D1	the thickness of the ring
10	100	14	3	1	4	90	60	40	16	14										3	4	M12		0.08	0.65
15	100	18	3	1	4	95	65	45	16	14										3	4	M12		0.11	0.73
20	100	25	3	1	4	105	75	58	18	14										3	4	M12		0.16	1.04
25	100	32	3.5	1	6	115	85	68	18	14										5	4	M12		0.29	1.25
32	100	38	3.5	1	6	140	100	78	18	18										5	4	M16		0.30	1.80
40	100	44.5	3.5	1	6	150	110	88	18	18										5	4	M16		0.35	2.00
50	100	57	4.5	1	7	160	125	102	18	18										6	4	M16		0.38	2.20
70	130	76	6	3	8	185	145	122	22	18	130	8	10	12	14	16	18	20	22	7	8	M16	0.69	1.04	3.30
80	130	89	6	3	8	200	160	138	24	18	160	8	10	12	14	16	18	20	22	7	8	M16	1.08	1.23	4.20
100	150	108	7	5	8	235	190	162	28	23	170	8	10	12	14	16	18	20	22	7	8	M20	1.50	1.74	6.60
125	180	133	7	5	8	290	220	188	30	25	240	8	10	12	14	16	18	20	22	7	8	M22	2.49	2.18	8.90
150	180	159	8	9	10	300	250	218	30	25	290	8	10	12	14	16	18	20	22	9	8	M22	3.63	2.98	10.6
200	200	219	9	18	11	360	310	298	32	25	400	8	10	12	14	16	18	20	22	10	12	M22	6.95	4.66	14.2
250	220	273	9	28	11	425	370	335	34	30	510	8	10	12	14	16	18	20	22	10	12	M27	11.5	5.86	19.4
300	220	325	9	40	11	485	430	390	36	30	610	8	10	12	14	16	18	20	22	10	16	M27	16.5	7.01	24.5

Size Table
nominal diameter	pipe	flange plate															stud bolt
	outside diameter	outer diameter and nominal	inner diameter and nominal	Attachment Lugs		protrusion	Recess	protrusion recess	Flange thickness and tolerance	height	Stud hole diameters and tolerances	Neck			flange weightKg		Quantity	thread	length
	outside diameter	outer diameter and nominal	inner diameter and nominal	diameter	height	Diameter and Tolerance	Diameter and Tolerance	protrusion Depth and Tolerance of Recess	Flange thickness and tolerance	height	Stud hole diameters and tolerances	outside diameter	maximum diameter	Rounding radius	belt protrusion out of the department	with recess	Quantity	thread	length
Dg	dH	D	d1	D2	h	D3	D4	H1	L	h	d	Dn	Dm		Q	Q	h		L
10	14	1000.87	8-0.5	50	2	34-0.34	350.34	4±0.5	180.52	48	140.43	15	34	4	1.05	1.0	4	M12	55
15	18	1050.87	12-0.5	55	2	39-0.34	400.34	4±0.5	180.52	48	140.43	19	38	5	1.18	1.11	4	M12	55
20	25	1251.0	18-0.5	68	2	50-0.4	510.4	4±0.5	200.52	56	180.52	26	48	5	1.87	1.76	4	M16	65
25	32	1351.0	25-0.5	78	2	57-0.4	580.4	4±0.5	220.52	58	180.52	33	52	5	2.36	2.22	4	M16	70
32	38	1501.0	31-0.5	85	2	65-0.4	660.4	4±0.5	240.52	62	230.52	39	64	5	3.15	2.99	4	M20	75
40	45	1651.0	37-0.5	96	3	75-0.4	760.4	4±0.5	240.52	68	230.52	46	74	5	3.80	3.67	4	M20	75
50	57	1751.0	47-0.5	106	3	87-0.46	880.46	4±0.5	260.52	70	230.52	58	86	5	4.76	4.5	4	M20	80
70	76	2001.15	64-0.5	132	3	109-0.46	1100.46	4±0.5	280.52	75	230.52	77	106	6	6.43	6.05	8	M20	90
80	89	2101.15	77-0.5	142	3	120-0.53	1210.53	4±0.5	300.62	75	230.52	90	120	6	7.43	7	8	M20	90
100	108	2501.15	84-0.5	170	3	149-0.53	1500.53	4.5±0.5	320.62	80	250.52	100	140	6	11.3	10.5	8	M20	100
125	133	2951.35	110-0.5	205	3	175-0.53	1760.53	4.5±0.5	360.62	98	300.62	135	172	8	17.5	16.6	8	M27	110
150	159	3401.35	142-0.5	240	3	203-0.6	2040.6	4.5±0.5	380.62	110	340.62	161	206	8	25.3	24.1	8	M30	120
200	219	4051.55	198-0.5	300	3	259-0.6	2600.6	4.5±0.5	400.62	116	340.62	222	264	10	37.5	35.9	12	M30	130
250	273	4701.55	246-1.0	355	3	312-0.68	3130.68	4.5±0.5	480.62	122	410.62	278	316	10	52.4	60.3	12	M36	140
300	325	5301.8	294-1.0	415	4	363-0.76	3640.76	4.5±0.5	540.74	136	410.62	330	370	12	70.8	68.3	16	M36	160
350	377	5951.8	342-1.0	470	4	421-0.76	4220.76	5±0.5	600.74	154	410.62	382	430	12	103.5	99.8	16	M36	170
400	426	6702.0	386-1.0	525	4	473-0.76	4740.76	5±0.5	660.74	170	480.62	432	484	12	142	137	16	M42	180

steel butt weld flange with nose and recessplatePg=64Kg/cm2

Figure No.:1standard-2009