BS 3293 Class 300 WN

Standards, Dimensions & Weight

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Nominal pipe size	Outside diameter of flange, O	Outside diameter, R	Thickness of flange min., C	Outside diameter of large end of hub, X	Outside diameter of small end of hub: Welding neck, A	Length through hub, Y	Fillet radius	Flange bore, B	Diameter of bolt circle, D	Diameter of bolt holes	Number of bolt holes
26	869.95	742.95	50.80	723.90	660.40	127.00	6.35	To be specified by the purchaser	806.45	34.93	24
28	927.10	793.75	52.39	781.05	711.20	128.59	6.35		863.60	34.93	28
30	984.25	857.25	53.98	831.85	762.00	130.18	6.35		914.40	34.93	28
32	1060.45	908.05	57.15	889.00	812.80	133.35	7.94		977.90	41.28	28
34	1111.25	958.85	58.74	939.80	863.60	134.94	7.94		1028.70	41.28	32
36	1168.40	1022.35	60.33	996.95	914.40	136.53	7.94		1085.85	41.28	32
38	1238.25	1073.15	60.33	1060.45	965.20	136.53	9.53		1149.35	41.28	32
40	1289.05	1123.95	63.50	1111.25	1016.00	139.70	9.53		1200.15	41.28	36
42	1346.20	1193.80	66.68	1168.40	1066.80	142.88	9.53		1257.30	41.28	36
44	1403.35	1244.60	66.68	1219.20	1117.60	142.88	11.11		1314.45	41.28	40
46	1454.15	1295.40	68.26	1270.00	1168.40	144.46	11.11		1365.25	41.28	40
48	1511.30	1358.90	69.85	1327.15	1219.20	146.05	11.11		1422.40	41.28	44