BS4504 Part 1 PIPE FLANGES

TO ALLSTAINLESS LIMITED STAINLESS STEEL SITE

ALL STAINLESS LIMITED info section
21 Camford Way, Sundon Park Luton, Bedfordshire, LU3 3AN
Telephone: 01582 584075 Facsimile: 01582 585234
mailto:info@allstainlessltd.co.uk

BS4504 Part 1 PIPE FLANGES

We stock a full range of BS4504 flanges, from table 6 bar to 40 bar in grades 304, 316 and 321. Specials can be manufactured to customer’s special requirements. As an example, we show the dimensions of 16 bar, which is the most commonly used.
We also offer a range of BS10 Table and ANSI flanges. For more information contact our sales desk.

	WELD NECK FLANGE
	SCREWED BOSS FLANGE
	SLIP ON BOSS FLANGE
	PLATE FLANGE
	PLATE BLANK FLANGE

BS4504:Part 1:1969 PIPE FLANGES
Dimensions of Nominal Pressure 2.5 & 6 Flanges

N.B	Size																	No. of Holes
		D	C1	C2	C3	F	E	B	H1	H2	H3	N1	N2	A	K	R	L
Ins	mm

3/8	10	75	12	12	12	2	35	18.2	20	28	6	26	25	17.2	50	3	11	4
½	15	80	12	12	12	2	40	22.4	20	30	6	30	30	21.3	55	3	11	4
¾	20	90	14	14	14	2	50	27.7	24	32	6	38	40	26.9	65	4	11	4
1"	25	100	14	14	14	2	60	34.5	24	35	6	42	50	33.7	75	4	11	4
1 ¼	32	120	16	14	14	2	70	43.2	26	35	6	55	60	42.4	90	5	14	4
1 ½	40	130	16	14	14	3	80	49.5	26	38	7	62	70	48.3	100	5	14	4
2"	50	140	16	14	14	3	90	62.0	28	38	8	74	80	60.3	110	5	14	4
2 ½	65	160	16	14	14	3	110	74.7	32	38	9	88	100	76.1	130	6	14	4
3	80	190	18	16	16	3	128	90.7	34	42	10	102	110	88.9	150	6	18	4
4	100	210	18	16	16	3	148	116.1	40	45	10	130	130	114.3	170	6	18	4
5	125	240	20	18	18	3	178	143.8	44	48	10	155	160	139.7	200	6	18	8
6	150	265	20	18	18	3	202	170.7	44	48	12	184	185	168.3	225	8	18	8
8	200	320	22	20	20	3	258	221.5	44	55	15	236	240	219.1	280	8	18	8
10	250	375	24	22	22	3	312	276.4	44	60	15	290	295	273.0	335	10	18	12
12	300	440	24	22	22	4	365	327.2	44	62	15	342	355	323.9	395	10	22	12
14	350	490	26	22	22	4	415	359.2	-	62	15	385	-	355.6	445	10	22	12
16	400	540	28	22	22	4	465	410.5	-	65	15	438	-	406.4	495	10	22	16
18	450	595	30	24	24	4	520	461.8	-	65	15	492	-	457.0	550	12	22	16
20	500	645	30	24	24	4	570	513.1	-	68	15	538	-	508.0	600	12	22	20
24	600	755	32	24	34	5	670	616.0	-	70	16	640	-	610.0	705	12	26	20

BS4504:Part 1:1969 PIPE FLANGES
Dimensions of Nominal Pressure 10 Flanges

N.B	Size																		No. of Holes
		D	C1	C2	C3	F	E	B	H1	H2	H3	N1	N2	A	G	K	R	L
Ins	mm

8	200	340	24	24	24	3	268	221.5	44	62	16	235	247	219.1	190	295	10	22	8
10	250	395	26	26	26	3	320	276.4	46	68	16	292	292	273.0	237	350	12	22	12
12	300	445	26	26	26	4	370	327.2	46	68	16	344	344	323.9	285	400	12	22	12
14	350	505	28	26	26	4	430	359.2	-	68	16	385	-	355.6	332	460	12	22	16
16	400	565	32	26	26	4	482	410.5	-	72	16	440	-	406.4	380	515	12	26	16
18	450	615	36	28	28	4	532	461.8	-	72	16	492	-	457.2	428	565	12	26	20
20	500	670	38	28	28	4	585	513.1	-	75	16	542	-	508.0	475	620	12	26	20
24	600	780	42	28	-	5	685	616.0	-	80	18	642	-	609.6	-	725	12	30	20

BS4504:Part 1:1969 PIPE FLANGES
Dimensions of Nominal Pressure 16 Flanges

N.B	Size																		No. of Holes
		D	C1	C2	C3	F	E	B	H1	H2	H3	N1	N2	A	G	K	R	L
Ins	mm

3/8	10	90	14	14	14	2	40	18.2	20	35	6	28	30	17.2	-	60	4	14	4
½	15	95	14	14	14	2	45	22.4	20	35	6	32	35	21.3	-	65	4	14	4
¾	20	105	16	16	16	2	58	27.7	24	38	6	39	45	26.9	-	75	4	14	4
1"	25	115	16	16	16	2	68	34.5	24	38	6	46	52	33.7	-	85	4	14	4
1 ¼	32	140	16	16	16	2	78	43.2	26	40	6	56	60	42.4	-	100	6	18	4
1 ½	40	150	16	16	16	3	88	49.5	26	42	7	64	70	48.3	-	110	6	18	4
2"	50	165	18	18	18	3	102	62.0	28	45	8	74	84	60.3	-	125	6	18	4
2 ½	65	185	18	18	18	3	122	74.7	32	45	10	92	104	76.1	55	145	6	18	4
3	80	200	20	20	20	3	138	90.7	34	50	10	110	118	88.9	70	160	8	18	8
4	100	220	20	20	20	3	158	116.1	40	52	12	130	140	114.3	90	180	8	18	8
5	125	250	22	22	22	3	188	143.8	44	55	12	158	168	139.7	115	210	8	18	8
6	150	285	22	22	22	3	212	170.7	44	55	12	184	195	168.3	140	240	10	22	8
8	200	340	24	24	24	3	268	221.5	44	62	16	234	246	219.1	190	295	10