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Spectacle Blind Flanges

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Email : sales01@sdzzsteel.com

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Spectacle Blind Flanges are available in the following specifications:
Size	1/2"NB to 56"NB
Class	150#, 300#, 3000#, 6000#, 9000#
Pressure Ratings	PN 1 - PN 400
Stainless Steel Spectacle Blind	ASTM A 182 F - 304 / 304H / 304L / 316 / 316H / 316L / 316Ti, 309, 310, 317L, 321, 347, 904L
Duplex Steel Spectacle Blind	ASTM A 182 - F 51, F 53, F 55
Alloy Steel Spectacle Blind	ASTM A 182 - F5, F9, F11, F21, F22 & F91
Carbon Steel Spectacle Blind	ASTM A 105
Low Temp. Carbon Steel Flanges (LTCS Spectacle Blind)	A 350 LF2
Cupro Nickel (Cu-Ni) Spectacle Blind	C70600, 90/10, C71500, 70/30, C71640
Nickel Spectacle Blind	UNS N02200, UNS N02201
Monel Spectacle Blind	UNS N04400, UNS N05500, Alloy 20
Inconel Spectacle Blind	UNS N06600, UNS N06601, UNS N06625, UNS N08800, UNS N08810, UNS N08825
Hastelloy Spectacle Blind	UNS N10276, UNS N06022, UNS N10665, UNS N06455
Titanium Spectacle Blind	Gr. 1, Gr. 2, Gr. 3, DTH 3.7035, DTH 3.7055
Other Services	Hot Dip Galvanized (GI) Spectacle Blind Sand Blasting on Spectacle Blind Shot Peening on Spectacle Blind Epoxy Coating on Spectacle Blind FBE Coating on Spectacle Blind

Class 150 Spectacle Blind Dimensions as per ASME B16.48

NPS	Outside Ø A	Inside Ø B	Centerline C	Thickness t	Web Width W
1/2	45	16	60	3	38
3/4	54	21	70	3	38
1	64	27	80	3	38
1¼	73	42	90	6.4	38
1½	83	48	100	6.4	38
2	102	61	120	6.4	51
2½	107	73	140	6.4	51
3	133	89	150	6.4	64
3½	159	102	175	9.7	64
4	172	114	190	9.7	64
5	194	141	215	9.7	76
6	219	168	240	12.7	76
8	276	219	300	12.7	76
10	337	273	360	15.7	102
12	406	324	430	19.1	102
14	448	356	475	19.1	108
16	511	406	460	22.4	108
18	546	457	580	25.4	114
20	603	508	635	28.4	121
24	714	610	750	31.8	140

Class 300 Spectacle Blind Dimensions as per ASME B16.48

NPS	Outside Ø A	Inside Ø B	Centerline C	Thickness t	Web Width W
1/2	51	16	65	6.4	38
3/4	64	21	80	6.4	38
1	70	27	90	6.4	38
1¼	79	42	100	6.4	38
1½	92	48	115	6.4	38
2	108	61	125	9.7	51
2½	127	73	150	9.7	51
3	146	89	170	9.7	64
3½	162	102	185	12.7	64
4	178	114	200	12.7	64
5	213	141	235	15.7	76
6	248	168	270	15.7	76
8	305	219	330	22.4	76
10	359	273	385	25.4	102
12	419	324	450	28.4	102
14	483	356	515	31.8	108
16	536	406	570	38.1	108
18	594	457	630	41.1	114
20	651	508	685	44.5	121
24	772	610	810	50.8	140

Class 600 Spectacle Blind Dimensions as per ASME B16.48

NPS	Outside Ø A	Inside Ø B	Centerline C	Thickness t	Web Width W
1/2	51	16	65	6.4	38
3/4	64	21	80	6.4	38
1	70	27	90	6.4	57
1¼	79	37	100	9.7	57
1½	92	43	115	9.7	67
2	108	55	125	9.7	57
2½	127	67	150	12.7	67
3	146	83	170	12.7	67
3½	159	96	185	15.7	76
4	191	108	215	15.7	76
5	238	135	265	19.1	86
6	264	162	290	22.4	86
8	318	212	350	28.4	95
10	397	265	430	35.1	105
12	454	315	490	41.1	105
14	489	346	525	44.5	114
16	562	397	605	50.8	124
18	610	448	655	53.8	133
20	679	497	725	63.5	133
24	787	597	840	73.2	152

Class 900 Spectacle Blind Dimensions as per ASME B16.48

NPS	Outside Ø A	Inside Ø B	Centerline C	Thickness t	Web Width W
1/2	60	16	80	6.4	38
3/4	67	21	90	6.4	41
1	76	27	100	6.4	57
1¼	86	37	110	9.7	57
1½	95	43	125	9.7	67
2	140	55	165	12.7	57
2½	162	67	190	12.7	67
3	165	83	190	15.7	67
4	203	108	235	19.1	76
5	244	135	280	22.4	86
6	286	162	320	25.4	86
8	356	212	395	35.1	95
10	432	265	470	41.1	105
12	495	315	535	47.8	105
14	518	346	560	53.8	114
16	572	397	615	60.5	124
18	635	448	685	66.5	133
20	696	497	750	73.2	133
24	835	597	900	88.9	152

Class 1500 Spectacle Blind Dimensions as per ASME B16.48

NPS	Outside Ø A	Inside Ø B	Centerline C	Thickness t	Web Width W
1/2	61	16	80	6.4	38
3/4	67	21	90	9.7	41
1	76	27	100	9.7	64
1¼	86	35	110	9.7	64
1½	95	41	125	12.7	70
2	140	53	165	12.7	70
2½	162	63	190	15.7	76
3	172	78	205	19.1	76
4	206	102	240	22.4	89
5	251	128	290	28.4	89
6	279	154	320	35.1	89
8	349	203	395	41.1	102
10	432	255	480	50.8	114
12	518	303	570	60.5	114
14	575	333	635	66.5	127
16	638	381	705	76.2	133
18	702	429	775	85.9	146
20	752	478	830	95.3	152
24	899	575	990	111.3	178

Class 2500 Spectacle Blind Dimensions as per ASME B16.48

NPS	Outside Ø A	Inside Ø B	Centerline C	Thickness t	Web Width W
1/2	67	16	90	9.7	38
3/4	73	21	95	9.7	41
1	83	27	110	9.7	64
1¼	102	35	130	12.7	64
1½	114	41	145	15.7	70
2	143	53	170	15.7	70
2½	165	63	195	19.1	76
3	194	78	230	22.4	76
4	232	102	275	28.4	89
5	276	128	325	35.1	89
6	314	154	370	41.1	89
8	384	198	440	53.8	102
10	473	248	540	66.5	114
12	546	289	620	79.2	114

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