BS T/E Flange | SABS 1123 Flange, BS T/D Flange, BS 4504 Flange, Backing Ring Flange, ANSI Flange

BRITISH BS 10 TABLE E FLANGE SPECIFICATION
N.B. SIZE		D	K	L	A	C	N1	N2	B	H1	H2	R1	R2	HOLES
IN	mm
½"	15	95.3	66.8	14.5	21.3	6.4	27.0	33.3	22.4	9.5	22.2	6.4	1.6	4
¾"	20	101.6	73.2	14.5	26.7	6.4	33.3	38.1	27.7	11.1	22.2	6.4	1.6	4
1"	25	114.3	82.6	14.5	33.5	7.2	42.9	47.6	34.6	11.1	22.2	6.4	1.6	4
1 ¼"	32	120.7	87.4	14.5	42.2	7.9	49.2	55.6	43.2	11.1	25.4	6.4	1.6	4
1 ½"	40	133.4	98.6	14.5	48.3	8.7	58.7	61.9	49.5	12.7	28.6	6.4	1.6	4
2"	50	152.4	114.3	17.5	60.5	9.5	69.9	74.6	62.0	12.7	28.6	6.4	1.6	4
2 ½"	65	165.1	127.0	17.5	73.2	10.3	82.6	90.5	74.7	15.9	31.8	6.4	1.6	4
3"	80	184.2	146.1	17.5	88.9	11.1	101.6	106.4	90.7	15.9	34.9	6.4	1.6	4
3 ½"	88	203.2	165.1	17.5	101.6	11.9	114.3	119.1	103.4	17.5	34.9	6.4	1.6	4
4"	100	215.9	177.8	17.5	114.3	12.7	130.2	133.4	116.1	19.1	41.3	9.5	3.2	4
5"	125	254.0	209.6	17.5	141.2	14.3	152.4	160.3	143.8	19.1	44.5	9.5	3.2	8
6"	150	279.4	235.0	17.5	168.4	17.5	184.2	185.7	171.7	19.1	47.6	9.5	3.2	8
8"	200	336.6	292.1	17.5	219.2	19.1	241.3	241.3	221.5	22.2	50.8	9.5	3.2	8
10"	250	406.4	355.6	22.2	273.1	22.2	292.1	298.5	276.4	27.0	63.5	9.5	3.2	8
12"	300	457.2	406.4	22.2	323.9	25.4	342.9	349.3	325.9	28.6	69.9	9.5	4.8	12
14"	350	527.1	469.9	25.4	355.6	28.6	406.4	-	359.2	-	73.0	9.5	4.8	12
16"	400	577.9	520.7	25.4	406.4	31.8	431.8	-	410.5	-	-	-	-	12
18"	450	641.4	584.2	25.4	457.2	34.9	-	-	461.8	-	-	-	-	12
20"	500	704.9	641.4	25.4	508.0	38.1	-	-	513.1	-	-	-	-	16
24"	600	825.5	755.7	28.7	609.6	47.6	-	-	616.0	-	-	-	-	16

British Standard BS 10 : 1962 - Specification for Flanges and Bolting for Pipes, Valves, and Fittings. This covers plain, boss, integrally cast or forged, and welding neck type flanges, in ten tables. Although BS 10 is obsolescent, it remains in use for the dimensions of light duty, economy stainless steel flanges in applications where corrosion resistance and/or hygiene, rather than high pressures and temperatures, are the primary considerations. The following tables detail the applicable standard dimensions from Tables D, E, F and H of BS 10.