BS 4504 Flanges, BS 4504 PN10 Flange Manufacturers, Supplier

BS 4504 PN10 Socket Weld Flanges, BS 4504 PN 5 slip on Flanges Supplier, BS 4504 Threaded Flanges, BS4504 weld neck Flange, BS4504 Plate Flange,BS 4504 Spectacle blind Flanges Manufacturer in India.

BS 4504 is a British Standard specification for flanges, which are used to connect pipes, valves, and other equipment in piping systems. The specification covers flanges made of various materials, such as carbon steel, stainless steel, and alloy steel.

BS 4504 flanges are generally used in low-pressure and low-temperature applications, and are available in several different types, including:

Weld neck flanges (type 11): These flanges have a long tapered hub that is welded to the pipe. They are often used for high-pressure applications.

Slip-on flanges (type 12): These flanges slip over the end of the pipe and are then welded in place. They are generally used for low-pressure applications.

Blind flanges (type 05): These flanges are used to close off the end of a pipe or valve.

Threaded flanges (type 13): These flanges have internal threads that are used to screw the flange onto the pipe.

Lap joint flanges (type 02): These flanges are used with a matching stub end, which is welded to the pipe. The flange then slides over the stub end and is held in place with a lap joint.

BS 4504 flanges are manufactured to various pressure ratings, such as PN6, PN10, PN16, PN25, PN40, and PN64. The pressure rating indicates the maximum pressure that the flange can withstand at a particular temperature.

Overall, BS 4504 flanges are a popular choice for many piping applications due to their versatility, ease of installation, and wide availability.

Specifications Dimensions Pressure Ratings Tolerances Applications

Suppliers of BS 4504 Welding Neck Flange, Ready Stock of BS 4504 Socket Weld Flange, BS 4504 PN16 Blind Flanges, Check Sizes And Dimensions Of BS4504 Forged Flanges, BS 4504 Ring Type Joint Orifice Flange.

BS 4504 Flange Specifications

Size Range

1/2" (15 NB) to 48" (1200NB) DN10~DN5000

Class / Pressure Rating

150#, 300#, 600#, 900#, 1500#, 2500#, PN6, PN10, PN16, PN25, PN40, PN64 etc.

Standards / Dimensions

ANSI/ASME B16.5, B16.36, B16.48, BS4504, BS 10, EN-1092, DIN, BS, GOST, MSS SP-44, ISO70051, JISB2220, BS1560-3.1, API7S-15, API7S-43, API605

Connection Type

Ring Joint Flange (RTJ), Flat Face Flange (FF), Raised Face Flange (RF), Male and Female Flange (M & F), Lap Joint Flange, Large and Small Tongue-and-Groove Flange (T & G)

BS 4504 Flanges Dimensions And Weight Chart

BS 4504 Flanges Dimensions and Tolerances	BS 4504 Flange Facing Dimensions
BS 4504 Plate Flange Dimensions	BS 4504 Weld Neck Flange Dimensions
BS 4504 Slip On Flange Dimensions	BS 4504 Threaded Flange Dimensions
BS 4504 Blank Flange Dimensions	BS 3293 Welding Neck & Slip On Flange Dimensions

BS 4504 FLANGES DIMENSIONS AND TOLERANCES

	Dimension	Range	Tolerance
	Dimension	Range	mm
Flange Facings	Eccentricity of machined facing diameters	< DN 100	1.0
	Eccentricity of machined facing diameters	> DN 100	2.0
	a (type B facing height)	2 mm	+0, -1.0
		3 mm	+0, -2.0
		4 mm	+0, -3.0
		5 mm	+0, -4.0
		6 mm	+0, -5.0
	b (type C and E facing height)	All	+0.5, -0
	b (type G facing height)	All	+0, -0.5
	b (type H facing height, outer)	All	+0.2, -0
	c (type D and F facing height)	All	+0, -0.5
	d (type H facing height, inner)	All	+0.5, -0
	B and E (facing diameters)	All	+0, -0.5
	C and D (facing diameters)	All	+0.5, -0
Surface Finish	Facing types A, B, E and F	All, turning	Ra = 3.2 µm min 12.5 µm max
	Facing types A, B, E and F	All, other than turning	Ra = 3.2 µm min 6.3 µm max
	Facing types C, D, G and H	All	Ra = 0.8 µm min 3.2 µm max
Flange Drilling Details	B (diameter of bolt circle)	Bolt sizes M10 to M24	±0.9
	B (diameter of bolt circle)	Bolt sizes M27 to M45	±1.4
	Centre to centre of adjacent bolt holes	Bolt sizes M10 to M24	±0.45
	Centre to centre of adjacent bolt holes	Bolt sizes M27 to M45	±0.7
All	A (outside diameter)	< DN 150	±2.0
		> DN 150 < DN 500	±3.0
		> DN 500 < DN 1200	±5.0
		> DN 1200 < DN 1800	±7.0
		> DN 1800	±10.0
	C (flange thickness, machined on both faces)	< 18 mm thickness	±1.0
		> 18 mm < 50 mm thickness	±1.0
		> 50 mm thickness	±1.0
	C (flange thickness, machined on front face)	< 18 mm thickness	+2.0, -1.0
		> 18 mm < 50 mm thickness	+4.0, -1.5
		> 50 mm thickness	+7.0, -2.0
Weld Neck Flanges, Code 111	B (outside diameter of hub at welding end)	< DN 125	+3.0, -0
		> DN 125 < DN 1200	+4.5, -0
		> DN 1200	+6.0, -0
	F (hub diameter)	< DN 50	+0, -2.0
		> DN 50 < DN 150	+0, -4.0
		> DN 150 < DN 300	+0, -6.0
		> DN 300 < DN 600	+0, -8.0
		> DN 600 < DN 1200	+0, -10.0
	D (length through hub)	< DN 80	±1.5
		> DN 80 < DN 250	±2.0
		> DN 250	±3.0
Slip on, Code 112 and Threaded,Code 113	E (slip on flange hub diameter)B (threaded flange hub diameter)	< DN 50	+1.0, -0
		> DN 50 < DN 150	+2.0, -0
		> DN 150 < DN 300	+4.0, -.0
		> DN 300 < DN 600	+8.0, -0
		> DN 600 < DN 1200	+12.0, -0
		> DN 1200 < DN 1800	+16.0, -0
		> DN 1800	+20.0, -0
	B (slip on bore diameter)	< DN 100	+0.5, -0
		> DN 100 < DN 400	+1.0, .0
		> DN 400 < DN 600	+1.5, .0
		> DN 600	+3.0, -0
	D (length through hub)	Same as Weld Neck D
Blank Flanges, Code 105	B (flange thickness)	Same as C for all other flanges
Blank Flanges, Code 105	C (unmachined centre portion)	Maximum specified

BS 4504 PLATE FLANGE DIMENSIONS AND TECHNICAL DRAWING

DN	PN	A mm	B mm	C mm
10	2.5, 6	75	12	18
	10 &16	90	14
	25 & 40	90	14
15	2.5 & 6	80	12	22
15	10 &16	95	14
	25 & 40	95	14
20	2.5 & 6	90	14	27.5
	10 &16	105	16
	25 & 40	105	16
25	2.5 & 6	100	14	34.5
	10 &16	115	16
	25 & 40	115	16
32	2.5 & 6	120	16	43.5
	10 &16	140	18
	25 & 40	140	18
40	2.5 & 6	130	16	49.5
	10 &16	150	18
	25 & 40	150	18
50	2.5 & 6	140	16	61.5
	10 & 16	165	20
	25 & 40	165	20
65	2.5 & 6	160	16	77.5
	10 & 16	185	20
	25 & 40	185	22
80	2.5 & 6	190	18	90.5
	10 &16	200	20
	25 & 40	200	24
100	2.5 & 6	210	18	116
	10 &16	220	22
	25 & 40	235	26
125	2.5 & 6	240	20	141.5
	10 & 16	250	22
	25 & 40	270	28
150	2.5 & 6	265	20	170.5
	10 & 16	285	24
	25 & 40	300	30
200	2.5 & 6	320	22	221.5
	10 &16	340	24
	25	360	32
	40	375	36
250	2.5 & 6	375	24	276.5
	10	395	26
	16	405	29
	25	425	35
	40	450	42
300	2.5 & 6	440	24	327.5
	10	445	26
	16	460	32
	25	485	38
	40	515	48
350	2.5 & 6	490	26	359.5
	10	505	28	359.5
	16	520	35	359
	25	555	42	359.5
	40	580	54	359.5
400	2.5 & 6	540	28	411
	10	565	32
	16	580	38
	25	620	46
	40	660	60
450	2.5 & 6	595	30	462
	10	615	36
	16	640	42
	25	670	50
	40	685	66
500	2.5 & 6	645	30	513.5
	10	670	38
	16	715	46
	25	730	56
	40	755	72
600	2.5 & 6	755	32	616.5
	10	780	42
	16	840	52
	25	845	68
	40	890	84
700	2.5	860	36	To be specifiedby purchaser
800	2.5	975	38
900	2.5	1075	40
1000	2.5	1175	42
1200	2.5	1375	44
1400	2.5	1575	48
1600	2.5	1790	51
1800	2.5	1990	54
2000	2.5	2190	58

Find the largest ready stock of BS 4504 Flanges, BS 4504 Flange Price List, BS4504 Reducing Flanges Stockist, BS 4504 Slip On Flanges Dealer, Check Availability of BS 4504 Threaded Flanges, BS 4504 PN25 RF Flanges Supplier, BS 4504 Forged Flanges in Mumbai, India.

BS 4504 SLIP ON FLANGE DIMENSIONS AND TECHNICAL DRAWING

DN	PN	A mm	B mm	C mm	D mm	E mm	F mm
10	6	75	18	12	20	25	3
	10 &16	90		14	20	30
	25 & 40	90		16	22	30
15	6	80	22	12	20	30	3
	10 &16	95		14	20	35
	25 & 40	95		16	22	35
20	6	90	27.5	14	24	40	4
	10 &16	105		16	24	45
	25 & 40	105		18	26	45
25	6	100	34.5	14	24	50	4
	10 &16	115		16	24	52
	25 & 40	115		18	28	52
32	6	120	43.5	14	26	60	5
	10 &16	140		16	26	60
	25 & 40	140		18	30	60
40	6	130	49.5	14	26	70	5
	10 &16	150		16	26	70
	25 & 40	150		18	32	70
50	6	140	61.5	14	28	80	5
	10 & 16	165		18	28	84
	25 & 40	165		20	34	84
65	6	160	77.5	14	32	100	6
	10 & 16	185		18	32	104
	25 & 40	185		22	38	104
80	6	190	90.5	16	34	110	6
	10 &16	200		20	34	118
	25&40	200		24	40	118
100	6	210	116	16	40	130	6
	10 &16	220		20	40	140
	25&40	235		24	44	145
125	6	240	141.5	18	44	160	6
	10 & 16	250		22	44	168
	25 & 40	270		26	48	170
150	6	265	170.5	18	44	185	8
	10 & 16	285		22	44	195
	25 & 40	300		28	75	190
200	6	320	221.5	20	44	240	8
	10 &16	340		24	44	246
	25	360		30	52	256
	40	375		34	52	260
250	6	375	276.5	22	44	295	10
	10	395		26	46	298
	16	405		26	46	298
	25	425		32	60	310
	40	450		38	60	312
300	6	440	327.5	22	44	355	10
	10	445		26	46	350
	16	460		28	46	350
	25	485		34	67	364
	40	515		42	67	380
350	10	505	359.5	26	53	400	10
	16	520	359	30	57	400
	25	555	359.5	38	72	418
	40	580	359.5	46	72	424
400	10	565	411	26	57	456	10
	16	580		32	63	456
	25	620		40	78	472
	40	660		50	78	478
450	10	615	462	28	63	502	12
	16	640		34	68	502
	25	670		42	84	520
	40	685		50	84	522
500	10	670	513.5	28	67	559	12
	16	715		34	73	559
	25	730		44	90	580
	40	755		52	90	576
600	10	780	616.5	28	75	658	12
	16	840		36	83	658
	25	845		46	100	684
	40	890		60	100	686

BS 4504 BLANK FLANGE DIMENSIONS AND TECHNICAL DRAWING

DN	PN	A mm	B mm	C mm
10	2.5, 6	75	12	–
	10 &16	90	14	–
	25 & 40	90	16	–
15	2.5 & 6	80	12	–
	10 &16	95	14	–
	25 & 40	95	16	–
20	2.5 & 6	90	14	–
	10 &16	105	16	–
	25 & 40	105	18	–
25	2.5 & 6	100	14	–
	10 &16	115	16	–
	25 & 40	115	18	–
32	2.5 & 6	120	14	–
	10 &16	140	16	–
	25 & 40	140	18	–
40	2.5 & 6	130	14	–
	10 &16	150	16	–
	25 & 40	150	18	–
50	2.5 & 6	140	14	–
	10 & 16	165	18	–
	25 & 40	165	20	–
65	2.5 & 6	160	14	55
	10 & 16	185	18	55
	25 & 40	185	22	55
80	2.5 & 6	190	16	70
	10 &16	200	20	70
	25&40	200	24	70
100	2.5 & 6	210	16	90
	10 &16	220	20	90
	25&40	235	24	90
125	2.5 & 6	240	18	115
	10 & 16	250	22	115
	25 & 40	270	26	115
150	2.5 & 6	265	18	140
	10 & 16	285	22	140
	25 & 40	300	28	140
200	2.5 & 6	320	20	190
	10 &16	340	24	190
	25	360	30	190
	40	375	34	190
250	2.5 & 6	375	22	235
	10	395	26	235
	16	405	26	235
	25	425	32	235
	40	450	38	235
300	2.5 & 6	440	22	285
	10	445	26	285
	16	460	28	285
	25	485	34	285
	40	515	42	285
350	2.5 & 6	490	22	325
	10	505	26	325
	16	520	30	325
	25	555	38	325
	40	580	46	325
400	2.5 & 6	540	22	375
	10	565	26	375
	16	580	32	375
	25	620	40	375
	40	660	50	375
450	2.5 & 6	595	24	425
	10	615	28	425
	16	640	34	425
	25	670	42	425
	40	685	54	425
500	2.5 & 6	645	24	475
	10	670	28	475
	16	715	36	475
	25	730	45	475
	40	755	56	475
600	2.5 & 6	755	34	575
	10	780	34	575
	16	840	44	575
	25	845	54	575
	40	890	70	575
700	2.5	860	36	–
	6	860	38	–
	10	895	38	670
	16	910	48	670
800	2.5	975	38	–
	6	975	42	–
	10	1015	42	770
	16	1025	52	770
900	2.5	1075	40	–
	6	1075	46	–
	10	1115	46	860
	16	1125	58	860
1000	2.5	1175	42	–
	6	1175	52	–
	10	1230	52	960
	16	1255	64	960
1200	2.5	1375	44	–
	6	1405	60	–
	10	1455	60	1160
	16	1485	76	1160
1400	2.5	1575	48	–
1400	6	1630	68	–
1600	2.5	1790	51	–
1600	6	1830	76	–
1800	2.5	1990	54	–
1800	6	2045	84	–
2000	2.5	2190	58	–
2000	6	2265	92	–

BS 4504 FLANGE FACING DIMENSIONS, TECHNICAL DRAWINGS.

DN	A mm									Face Dimensions
DN	PN 2.5	PN 6	PN 10	PN 16	PN 25	PN 40	B mm	C mm	D mm	E mm	a mm	b mm	c mm	d mm	αmm	e mm
10	35	35	40	40	40	40	34	35	24	23	2	4	3	2	–	5
15	40	40	45	45	45	45	39	40	29	28	2	4	3	2	–	5
20	50	50	58	58	58	58	50	51	36	35	2	4	3	2	41°16′	5
25	60	60	68	68	68	68	57	58	43	42	2	4	3	2	41°16′	5
32	70	70	78	78	78	78	65	66	51	50	2	4	3	2	41°16′	5
40	80	80	88	88	88	88	75	76	61	60	3	4	3	2	41°16′	5
50	90	90	102	102	102	102	87	88	73	72	3	4	3	2	41°16′	5
65	110	110	122	122	122	122	109	110	95	94	3	4	3	2	41°16′	5
80	128	128	138	138	138	138	120	121	106	105	3	4	3	2	41°16′	5
100	148	148	158	158	162	162	149	150	129	128	3	4.5	3.5	2.5	32°15′	6
125	178	178	188	188	188	188	175	176	155	154	3	4.5	3.5	2.5	32°15′	6
150	202	202	212	212	218	218	203	204	183	182	3	4.5	3.5	2.5	32°15′	6
200	258	258	268	268	278	285	259	260	239	238	3	4.5	3.5	2.5	32°15′	6
250	312	312	320	320	335	345	312	313	292	291	3	4.5	3.5	2.5	32°15′	6
300	365	365	370	378	395	410	363	364	343	342	4	4.5	3.5	2.5	32°15′	6
350	415	415	430	438	450	465	421	422	395	394	4	5	4	3	27°24′	7
400	465	465	482	490	505	535	473	474	447	446	4	5	4	3	27°24′	7
450	520	520	532	550	555	560	523	524	497	496	4	5	4	3	27°24′	7
500	570	570	585	610	615	615	575	576	549	548	4	5	4	3	27°24′	7
600	670	670	685	725	720	735	675	676	649	648	5	5	4	3	27°24′	7
700	775	775	800	795	820	–	777	778	751	750	5	5	4	3	27°24′	7
800	880	880	905	900	930	–	882	883	856	855	5	5	4	3	27°24′	7
900	980	980	1005	1000	1030	–	987	988	961	960	5	5	4	3	27°24′	7
1000	1080	1080	1110	1115	1140	–	1092	1094	1062	1060	5	6	5	4	28°39′	8
1200	1280	1295	1330	1330	1350	–	1292	1294	1262	1260	5	6	5	4	28°39′	8
1400	1480	1510	1535	1530	1560	–	1492	1494	1462	1460	5	6	5	4	28°39′	8
1600	1690	1710	1760	1750	1780	–	1692	1694	1662	1660	5	6	5	4	28°39′	8
1800	1890	1920	1960	1950	1985	–	1982	1894	1862	1860	5	6	5	4	28°39′	8
2000	2090	2125	2170	2150	2210	–	2092	2094	2062	2060	5	6	5	4	28°39′	8

BS 4504 WELD NECK FLANGE DIMENSIONS AND TECHNICAL DRAWING

DN	PN	A mm	B mm	C mm	D mm	E mm	F mm	G mm	H mm
10	2.5,6	75	17.2	12	28	6	26	3	1.8
	10	90		14	35		28		1.8
	16	90		14	35		28		1.8
	25	90		16	35		28		1.8
	40	90		16	35		28		1.8
15	2.5,6	80	21.3	12	30	6	30	3	2
	10	95		14	35		32		2
	16	95		14	35		32		2
	25	95		16	38		32		2
	40	95		16	38		32		2
20	2.5,6	90	26.9	14	32	6	38	4	2.3
	10	105		16	38		39		2.3
	16	105		16	38		39		2.3
	25	105		18	40		40		2.3
	40	105		18	40		40		2.3
25	2.5,6	100	33.7	14	35	6	42	4	2.6
	10	115		16	38		46		2.6
	16	115		16	38		46		2.6
	25	115		18	40		46		2.6
	40	115		18	40		46		2.6
32	2.5,6	120	42.4	14	35	6	55	5	2.6
	10	140		16	40		56		2.6
	16	140		16	40		56		2.6
	25	140		18	42		56		2.6
	40	140		18	42		56		2.6
40	2.5,6	130	48.3	14	38	7	62	5	2.6
	10	150		16	42		64		2.6
	16	150		16	42		64		2.6
	25	150		18	45		64		2.6
	40	150		18	45		64		2.6
50	2.5,6	140	60.3	14	38	8	74	5	2.9
	10	165		18	45		74		2.9
	16	165		18	45		74		2.9
	25	165		20	48		74		2.9
	40	165		20	48		74		2.9
65	2.5,6	160	76.1	14	38	9	88	6	2.9
	10	185		18	45	10	92		2.9
	16	185		18	45		92		2.9
	25	185		22	52		92		2.9
	40	185		22	52		92		2.9
80	2.5,6	190	88.9	16	42	10	102	6	3.2
	10	200		20	50	10	110		3.2
	16	200		20	50	12	110		3.2
	25	200		24	58		110		3.2
	40	200		24	58		110		3.2
100	2.5,6	210	114.3	16	45	10	130	6	3.6
	10	220		20	52	12	130		3.6
	16	220		20	52		130		3.6
	25	235		24	65		134		3.6
	40	235		24	65		134		3.6
125	2.5,6	240	139.7	18	48	10	155	6	4
	10	250		22	55	12	158		4
	16	250		22	55		158		4
	25	270		26	68		162		4
	40	270		26	68		162		4
150	2.5,6	265	168.3	18	48	12	184	8	4.5
	10	285		22	55		184		4.5
	16	285		22	55		184		4.5
	25	300		28	75		190		4.5
	40	300		28	75		190		4.5
200	2.5,6	320	219.1	20	55	15	236	8	5.6
	10	340		24	62	16	234		5.6
	16	340		24	62		234		5.6
	25	360		30	80		244		6.3
	40	375		34	88		244		6.3
250	2.5,6	375	273	22	60	15	290	10	6.3
	10	395		26	68	16	288		6.3
	16	405		26	70	16	288		6.3
	25	425		32	88	18	296		7.1
	40	450		38	105	18	306		7.1
300	2.5,6	440	323.9	22	62	15	342	10	7.1
	10	445		26	68	16	342		7.1
	16	460		28	78	16	342		7.1
	25	485		34	92	18	350		8
	40	515		42	115	18	362		8
350	2.5,6	490	355.6	22	62	15	385	10	7.1
	10	505		26	68	16	390		7.1
	16	520		30	82	16	390		8
	25	555		38	100	20	398		8
	40	580		46	125	20	408		8.8
400	2.5,6	540	406.4	22	65	15	438	10	7.1
	10	565		26	72	16	440		7.1
	16	580		32	85	16	444		8
	25	620		40	110	20	452		8.8
	40	660		50	135	20	462		11
450	2.5,6	595	457	24	65	15	492	12	7.1
	10	615		28	72	16	488		7.1
	16	640		34	87	16	490		8
	25	670		42	110	20	500		8.8
	40	685		50	135	20	500		12.5
500	2.5,6	645	508	24	68	15	538	12	7.1
	10	670		28	75	16	540		7.1
	16	715		34	90	16	546		8
	25	730		44	125	20	558		10
	40	755		52	140	20	562		14.2
600	2.5,6	755	610	24	70	16	640	12	7.1
	10	780		28	80	18	640		7.1
	16	840		36	95	18	650		8.8
	25	845		46	125	20	660		11
	40	890		60	150	20	666		16
700	2.5	860	711	24	70	16	740	12	-1
	6	860		24	70	16	740		7.1
	10	895		30	80	18	746		8
	16	910		36	100	18	750		8.8
	25	960		46	125	20	760		12.5
800	2.5	975	813	26	70	16	842	12	-1
	6	975		24	70	16	842		7.1
	10	1015		32	90	18	848		8
	16	1025		38	105	20	848		10
	25	1085		50	135	22	864		14.2
900	2.5	1075	914	26	70	16	942	12	-1
	6	1075		26	70	16	942		7.1
	10	1115		34	95	20	948		10
	16	1125		40	110	20	948		10
	25	1185		54	145	24	968		16
1000	2.5	1175	1016	26	70	16	1045	12	-1
	6	1175		26	70	16	1045		7.1
	10	1230		34	95	20	1050		10
	16	1255		42	120	22	1056		10
	25	1320		58	155	24	1070		17.5
1200	2.5	1375	1220	26	70	16	1245	16	-1
	6	1405		28	90	20	1248	12	8
	10	1455		38	115	25	1256		11
	16	1485		48	130	30	1260		12.5
1400	2.5	1575	1420	26	70	16	1445	16	-1
	6	1630		32	90	20	1452	12	8
	10	1675		42	120	25	1460		12
	16	1685		52	145	30	1465		14.2
1600	2.5	1790	1620	26	80	20	1645	16	-1
	6	1830		34	90	20	1655	12	9
	10	1915		46	130	25	1666		14
	16	1930		58	160	35	1668		16
1800	2.5	1990	1820	26	80	20	1845	16	-1
	6	2045		36	100	20	1855	15	10
	10	2115		50	140	30	1866		15
	16	2130		62	170	35	1870		17.5
2000	2.5	2190	2020	26	80	22	2045	16	-1
	6	2265		38	110	25	2058	15	11
	10	2325		54	150	30	2070		16
	16	2345		66	190	40	2072		20

BS 4504 THREADED FLANGE DIMENSIONS AND TECHNICAL DRAWING

DN	PN	A mm	B mm	C mm	D mm	E mm
10	6	75	25	12	20	3
	16	90	30	14	20
	40	90	30	16	22
15	6	80	30	12	20	3
	16	95	35	14	20
	40	95	35	16	22
20	6	90	40	14	24	4
	16	105	45	16	24
	40	105	45	18	26
25	6	100	50	14	24	4
	16	115	52	16	24
	40	115	52	18	28
32	6	120	60	14	26	5
	16	140	60	16	26
	40	140	60	18	30
40	6	130	70	14	26	5
	16	150	70	16	26
	40	150	70	18	32
50	6	140	80	14	28	5
	16	165	84	18	28
	40	165	84	20	34
65	6	160	100	14	32	6
	16	185	104	18	32
	40	185	104	22	38
80	6	190	110	16	34	6
	16	200	118	20	34
	40	200	118	24	40
100	6	210	130	16	40	6
	16	220	140	20	40
	40	235	145	24	44
125	6	240	160	18	44	6
	16	250	168	22	44
	40	270	170	26	48
150	6	265	185	18	44	8
	16	285	195	22	44
	40	300	200	28	52
200	6	320	240	20	44	8
	16	340	246	24	44
	40	375	260	34	52
250	6	375	295	22	44	10
	16	405	298	26	46
	40	450	312	38	60
300	6	440	355	22	44	10
	16	460	350	28	46
	40	515	380	42	67
350	16	520	400	30	57	10
350	40	580	424	46	72	10
400	16	580	456	32	63	10
400	40	660	478	50	78	10
450	16	640	502	34	68	12
450	40	685	522	50	84	12
500	16	715	559	34	73	12
500	40	755	576	52	90	12
600	16	840	658	36	83	12
600	40	890	686	60	100	12
700	16	910	760	36	83	12
800	16	1025	864	38	90	12
900	16	1125	968	40	94	12
1000	16	1255	1072	42	100	12

BS 3293 STANDARD WELDING NECK , SLIP ON FLANGE DIMENSIONS AND TECHNICAL DRAWING

	Dimension	Tolerance
	Dimension	in	mm
Weld Neck and Slip On Flanges (pages 8-56 to8-59)	G (raised face diameter)	±1/64	±0.40
	C (flange thickness)	+3/16, -0	+4.76, -0
	D (overall length)	±1/8	±3.18
	E (outside diameter at welding end of weld neck hub)	+5/32, 1/32	+3.97, -0.79
	B (inside diameter of weld neck flange)	+1/8, 1/16	+3.18, -1.59
	B (inside diameter of slip on flange)	+1/16, -0	+1.59, -0
Ring Joint Facingon Weld Neck and Slip On Flanges (see below)	L (depth of groove)	+1/64, -0	+0.40, -0
	M (width of groove)	±0.008	±0.20
	K (pitch diameter of groove)	±0.005	±0.13

BS 4504 Flanges Pressure Ratings

–	–	–	–	Temperature		–	–	–
BS 4504 FLANGE TABLE	-10°C to 200°C	250°C	300°C	350°C	400°C	425°C	450°C	475°C
–	–	–	–	–	–	–	–	–
6	6	5.5	5	–	–	–	–	–
–	–	–	–	–	–	–	–	–
10	10	9	8	7	6	–	–	–
–	–	–	–	–	–	–	–	–
16	16	15	13	11	9	–	–	–
–	–	–	–	–	–	–	–	–
25	25	24	21	17	14	12	9	6
–	–	–	–	–	–	–	–	–
40	40	38	33	28	23	20	15	10
–	–	–	–	–	–	–	–	–
64	64	61	53	44	36	32	24	16
–	–	–	–	–	–	–	–	–
100	100	95	83	70	57	50	37	25
–	–	–	–	–	–	–	–	–
160	160	152	132	112	92	80	60	40
–	–	–	–	–	–	–	–	–

BS 4504 Flanges Tolerances

Dimensions	Range	BS 4504 Tolerance
Dimensions	Range	Millimeter
Flange Facings	Eccentricity of machined facing diameters	< DN 100	1.0
	Eccentricity of machined facing diameters	> DN 100	2.0
	a (type B facing height)	2 millimeter	+0, -1.0
		3 millimeter	+0, -2.0
		4 millimeter	+0, -3.0
		5 millimeter	+0, -4.0
		6 millimeter	+0, -5.0
	b (type C and E facing height)	All	+0.5, -0
	b (type G facing height)	All	+0, -0.5
	b (type H facing height, outer)	All	+0.2, -0
	c (type D and F facing height)	All	+0, -0.5
	d (type H facing height, inner)	All	+0.5, -0
	B and E (facing diameters)	All	+0, -0.5
	C and D (facing diameters)	All	+0.5, -0
Surface Finish	Facing types A, B, E and F	All, turning	Ra = 3.2 µm min 12.5 µm max
	Facing types A, B, E and F	All, other than turning	Ra = 3.2 µm min 6.3 µm max
	Facing types C, D, G and H	All	Ra = 0.8 µm min 3.2 µm max
Flange Drilling Details	B (diameter of bolt circle)	Bolt sizes M10 to M24	±0.9
	B (diameter of bolt circle)	Bolt sizes M27 to M45	±1.4
	Centre to centre of adjacent bolt holes	Bolt sizes M10 to M24	±0.45
	Centre to centre of adjacent bolt holes	Bolt sizes M27 to M45	±0.7
All	A (outside diameter)	< DN 150	±2.0
		> DN 150 < DN 500	±3.0
		> DN 500 < DN 1200	±5.0
		> DN 1200 < DN 1800	±7.0
		> DN 1800	±10.0
	C (flange thickness, machined on both faces)	< 18 millimeter thickness	±1.0
		> 18 millimeter < 50 millimeter thickness	±1.0
		> 50 mm thickness	±1.0
	C (flange thickness, machined on front face)	< 18 mm thickness	+2.0, -1.0
		> 18 mm < 50 mm thickness	+4.0, -1.5
		> 50 mm thickness	+7.0, -2.0
Weld Neck Flanges, Code 111	B (outside diameter of hub at welding end)	< DN 125	+3.0, -0
		> DN 125 < DN 1200	+4.5, -0
		> DN 1200	+6.0, -0
	F (hub diameter)	< DN 50	+0, -2.0
		> DN 50 < DN 150	+0, -4.0
		> DN 150 < DN 300	+0, -6.0
		> DN 300 < DN 600	+0, -8.0
		> DN 600 < DN 1200	+0, -10.0
	D (length through hub)	< DN 80	±1.5
		> DN 80 < DN 250	±2.0
		> DN 250	±3.0
Slip on, Code 112 and Threaded,Code 113	E (slip on flange hub diameter)B (threaded flange hub diameter)	< DN 50	+1.0, -0
		> DN 50 < DN 150	+2.0, -0
		> DN 150 < DN 300	+4.0, -.0
		> DN 300 < DN 600	+8.0, -0
		> DN 600 < DN 1200	+12.0, -0
		> DN 1200 < DN 1800	+16.0, -0
		> DN 1800	+20.0, -0
	B (slip on bore diameter)	< DN 100	+0.5, -0
		> DN 100 < DN 400	+1.0, .0
		> DN 400 < DN 600	+1.5, .0
		> DN 600	+3.0, -0
	D (length through hub)	Same as Weld Neck D
Blank Flanges, Code 105	B (flange thickness)	Same as C for all other flanges
Blank Flanges, Code 105	C (unmachined centre portion)	Maximum specified

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BS 4504 Flanges Applications

We stock in India and export to the following countries

Australia, Afghanistan, Algeria, Angola, Argentina, Armenia, Azerbaijan, Bahrain, Bangladesh, Benin,
Bhutan, Botswana, Brazil, Brunei, Burkina Faso, Cambodia, Cameroon, Canada, Central Africa Republic,
Chad, Chile, Colombia, Cuba, Cyprus, DRC, Djibouti, Egypt, Equatorial Guinea, Eritrea, Eswatini,
Ethiopia, Fiji, Finland, France, Georgia, Germany, Ghana, Greece, Hungary, Iceland, Indonesia, Iran,
Iraq, Ireland, Israel, Italy, Japan, Jordan, Kazakhstan, Kenya, Kuwait, Kyrgyzstan, Laos, Lebanon,
Lesotho, Liberia, Libya, Lithuania, Madagascar, Malawi, Malaysia, Maldives, Mali, Mexico, Morocco,
Mozambique, Mauritania, Myanmar, Namibia, Nepal, Netherlands, New Zealand, Nigeria, Norway, Oman,
Panama, Peru, Philippines, Poland, Portugal, Palestine, Qatar, Russia, Rwanda, Romania, Saudi Arabia,
Senegal, Sierra Leone, Singapore, Slovakia, Somalia, South Africa, South Korea, South Sudan, Spain,
Sri Lanka, Sweden, Switzerland, Syria, Taiwan, Tajikistan, Tanzania, Tasmania, Thailand, The Gambia,
Timor-Leste, Togo, Tunisia, Turkey, Turkiye, Turkmenistan, Uganda, Uzbekistan, United Arab Emirates (UAE),
United Kingdom (UK), United States (US), Venezuela, Vietnam, Yemen, Zambia, Zimbabwe

We stock in Mumbai and supply to the following cities

Abu Dhabi, Amsterdam, Abuja, Accra, Addis Ababa, Ahmedabad, Algiers, Amman, Ankara, Antananarivo,
Ashgabat, Asmara, Astana, Athens, Baghdad, Baku, Bamako, Bandar Seri Begawan, Bangkok, Bangui,
Banjul, Beirut, Bengaluru, Berlin, Bishkek, Bloemfontein, Bogotá, Bern, Brasília, Bratislava,
Bucharest, Budapest, Buenos Aires, Cairo, Canberra, Cape Town, Caracas, Chennai, Coimbatore, Dakar,
Damascus, Dhaka, Dili, Djibouti city, Dodoma, Doha, Dublin, Dushanbe, Freetown, Gaborone, Ghaziabad,
Guwahati, Hanoi, Harare, Havana, Helsinki, Hobart, Hyderabad, Indore, Jaipur, Jakarta, Jerusalem,
Juba, Jurong East, Kabul, Kampala, Kanpur, Kathmandu, Kigali, Kinshasa, Kochi, Kolkata, Kuala Lumpur,
Kuwait City, Lisbon, Lilongwe, Lima, Lobamba, Lomé, London, Luanda, Lucknow, Lusaka, Malabo, Madrid,
Malé, Mexico City, Manama, Moscow, Manila, Maputo, Maseru, Mbabane, Mogadishu, Monrovia, Mumabi,
Muscat, Nagpur, Nairobi, New Delhi, Niamey, Nicosia, Noida, Nouakchott, N’Djamena, Oslo, Ottawa,
Ouagadougou, Panama City, Paris, Patna, Phnom Penh, Porto-Novo, Pretoria, Pune, Rabat, Reykjavík,
Riyadh, Rome, Sana’a, Santiago, Sri Jayawardenepura Kotte, Stockholm, Seoul, Singapore, Surat,
Suva, Taipei City, Tashkent, Tokyo, Tbilisi, Tehran, Thimphu, Tripoli, Tunis, Vientiane, Vilnius,
Visakhapatnam, Warsaw, Washington D.C., Wellington, Windhoek, Yaoundé, Yerevan, Naypyidaw

BS 4504 Flanges Price

Omaa Metal Sources is BS 4504 Flanges Exporters and Suppliers in the US, UK, South Africa, Saudi Arabia, Singapore, UAE, Oman, South Korea, Turkey, Bahrain, Malaysia, Philippines, Thailand, Norway, Indonesia, Iraq, Yemen, Bangladesh, Nigeria, Egypt, Peru, Ghana, Morocco, Etc.