Stainless Steel Blind Flange, SS Spectacle Blind Flanges Manufacturer

Stainless Steel Blind Flange

1.Type: Slip-On, Welding Neck, Blind, Socket Welding, Threaded, Lap Joint and Plate etc;

2.Standard: ANSI, JIS, DIN, EN;

3.Material: 304/304L, 316/316L, 316H, 310, F321 F44 (UNS S31254)

Alloy Steel flanges ASTM A182 F1, F5a, F9, F11, F12, F22, F91;

4.Wall Thickness: Sch10, Sch20 , Sch30, STD, Sch40, XS,Sch80, Sch100, Sch120, Sch140, XXS;

5.Pressure Rating: Class 150LBS, 300LBS, 600LBS, 900LBS, 1500LBS, 2000LBS, 3000LBS, 6000LBS, 9000 LBS;

6.Size: 1/2" - 24";

7.Surface treatment: antirust oil, black / yellow / transparent / electric galvanized / hot galvanized.

Stainless Steel Blind Flange structure

forged steel flange dimensions class150

	Nominal size	Outside diam. of flange	Thick. of flange	Diam. of raised face	No. of holes	Diam. of holes	Diam. of bolts	Diam. of bolt circle	Approx. weight pounds Kg
		O	C	R
in.	1/2"	3.5	0.44	1.38	4	0.62	1/2	2.38	1
mm.		88.9	11.2	35.1		15.7	12.7	60.5	0.5
in.	3/4"	3.88	0.5	1.69	4	0.62	1/2	2.75	2
mm.		98.6	12.7	42.9		15.7	12.7	69.9	1
in.	1"	4.25	0.56	2	4	0.62	1/2	3.12	2
mm.		108	14.2	50.8		15.7	12.7	79.2	1
in.	1 1/4"	4.62	0.62	2.5	4	0.62	1/2	3.5	3
mm.		117.3	15.7	63.5		15.7	12.7	88.9	1
in.	1 1/2"	5	0.69	2.88	4	0.62	1/2	3.88	4
mm.		127	17.5	73.2		15.7	12.7	98.6	2
in.	2"	6	0.75	3.62	4	0.75	5/8	4.75	5
mm.		152.4	19.1	91.9		19.1	15.9	120.7	2
in.	2 1/2"	7	0.88	4.12	4	0.75	5/8	5.5	7
mm.		177.8	22.4	104.6		19.1	15.9	139.7	3
in.	3"	7.5	0.94	5	4	0.75	5/8	6	9
mm.		190.5	23.9	127		19.1	15.9	152.4	4
in.	3 1/2"	8.5	0.94	5.5	8	0.75	5/8	7	13
mm.		215.9	23.9	139.7		19.1	15.9	177.8	6
in.	4"	9	0.94	6.19	8	0.75	5/8	7.5	17
mm.		228.6	23.9	157.2		19.1	15.9	190.5	8
in.	5"	10	0.94	7.31	8	0.88	3/4	8.5	20
mm.		254	23.9	185.7		22.4	19.1	215.9	9
in.	6"	11	1	8.5	8	0.88	3/4	9.5	26
mm.		279.4	25.4	215.9		22.4	19.1	241.3	12
in.	8"	13.5	1.12	10.62	8	0.88	3/4	11.75	45
mm.		342.9	28.4	269.7		22.4	19.1	298.5	20
in.	10"	16	1.19	12.75	12	1	7/8	14.25	70
mm.		406.4	30.2	323.9		25.4	22.2	362	32
in.	12"	19	1.25	15	12	1	7/8	17	110
mm.		482.6	31.8	381		25.4	22.2	431.8	50
in.	14"	21	1.38	16.25	12	1.12	1	18.75	140
mm.		533.4	35.1	412.8		28.4	25.4	476.3	64
in.	16"	23.5	1.44	18.5	16	1.12	1	21.25	180
mm.		596.9	36.6	469.9		28.4	25.4	539.8	82
in.	18"	25	1.56	21	16	1.25	1 1/8	22.75	220
mm.		635	39.6	533.4		31.8	28.6	577.9	100
in.	20"	27.5	1.69	23	20	1.25	1 1/8	25	285
mm.		698.5	42.9	584.2		31.8	28.6	635	129
in.	24"	32	1.88	27.25	20	1.38	1 1/4	29.5	430
mm.		812.8	47.8	692.2		35.1	31.8	749.3	195

forged steel flange dimensions class300

	Nominal size	Outside diam. of flange	Thick. of flange	Diam. of raised face	No. of holes	Diam. of holes	Diam. of bolts	Diam. of bolt circle	Approx. weight pounds Kg
		O	C	R
in.	1/2"	3.75	0.56	1.38	4	0.62	1/2	2.62	2
mm.		95.3	14.2	35.1		15.7	12.7	66.5	1
in.	3/4"	4.62	0.62	1.69	4	0.75	5/8	3.25	3
mm.		117.3	15.7	42.9		19.1	15.9	82.6	1
in.	1"	4.88	0.69	2	4	0.75	5/8	3.5	3
mm.		124	17.5	50.8		19.1	15.9	88.9	1
in.	1 1/4"	5.25	0.75	2.5	4	0.75	5/8	3.88	4
mm.		133.4	19.1	63.5		19.1	15.9	98.6	2
in.	1 1/2"	6.12	0.81	2.88	4	0.88	3/4	4.5	6
mm.		155.4	20.6	73.2		22.4	19.1	114.3	3
in.	2"	6.5	0.88	3.62	8	0.75	5/8	5	8
mm.		165.1	22.4	91.9		19.1	15.9	127	4
in.	2 1/2"	7.5	1	4.12	8	0.88	3/4	5.88	12
mm.		190.5	25.4	104.6		22.4	19.1	149.4	5
in.	3"	8.25	1.12	5	8	0.88	3/4	6.62	16
mm.		209.6	28.4	127		22.4	19.1	168.1	7
in.	3 1/2"	9	1.19	5.5	8	0.88	3/4	7.25	21
mm.		228.6	30.2	139.7		22.4	19.1	184.2	10
in.	4"	10	1.25	6.19	8	0.88	3/4	7.88	27
mm.		254	31.8	157.2		22.4	19.1	200.2	12
in.	5"	11	1.38	7.31	8	0.88	3/4	9.25	35
mm.		279.4	35.1	185.7		22.4	19.1	235	16
in.	6"	12.5	1.44	8.5	12	0.88	3/4	10.62	50
mm.		317.5	36.6	215.9		22.4	19.1	269.7	23
in.	8"	15	1.62	10.62	12	1	7/8	13	81
mm.		381	41.1	269.7		25.4	22.2	330.2	37
in.	10"	17.5	1.88	12.75	16	1.12	1	15.25	124
mm.		444.5	47.8	323.9		28.4	25.4	387.4	56
in.	12"	20.5	2	15	16	1.25	1 1/8	17.75	185
mm.		520.7	50.8	381		31.8	28.6	450.9	84
in.	14"	23	2.12	16.25	20	1.25	1 1/8	20.25	250
mm.		584.2	53.8	412.8		31.8	28.6	514.4	113
in.	16"	25.5	2.25	18.5	20	1.38	1 1/4	22.5	295
mm.		647.7	57.2	469.9		35.1	31.8	571.5	134
in.	18"	28	2.38	21	24	1.38	1 1/4	24.75	395
mm.		711.2	60.5	533.4		35.1	31.8	628.7	179
in.	20"	30.5	2.5	23	24	1.38	1 1/4	27	505
mm.		774.7	63.5	584.2		35.1	31.8	685.8	229
in.	24"	36	2.75	27.25	24	1.62	1 1/2	32	790
mm.		914.4	69.9	692.2		41.1	38.1	812.8	358

forged steel flange dimensions class600

	Nominal size	Outside diam. of flange	Thick. of flange	Diam. of raised face	No. of holes	Diam. of holes	Diam. of bolts	Diam. of bolt circle	Approx. weight pounds Kg
		O	C	R
in.	1/2"	3.75	0.56	1.38	4	0.62	1/2	2.62	2
mm.		95.3	14.2	35.1		15.7	12.7	66.5	1
in.	3/4"	4.62	0.62	1.69	4	0.75	5/8	3.25	3
mm.		117.3	15.7	42.9		19.1	15.9	82.6	1
in.	1"	4.88	0.69	2	4	0.75	5/8	3.5	4
mm.		124	17.5	50.8		19.1	15.9	88.9	2
in.	1 1/4"	5.25	0.81	2.5	4	0.75	5/8	3.88	5
mm.		133.4	20.6	63.5		19.1	15.9	98.6	2
in.	1 1/2"	6.12	0.88	2.88	4	0.88	3/4	4.5	8
mm.		155.4	22.4	73.2		22.4	19.1	114.3	4
in.	2"	6.5	1	3.62	8	0.75	5/8	5	10
mm.		165.1	25.4	91.9		19.1	15.9	127	5
in.	2 1/2"	7.5	1.12	4.12	8	0.88	3/4	5.88	15
mm.		190.5	28.4	104.6		22.4	19.1	149.4	7
in.	3"	8.25	1.25	5	8	0.88	3/4	6.62	20
mm.		209.6	31.8	127		22.4	19.1	168.1	9
in.	3 1/2"	9	1.38	5.5	8	1	7/8	7.25	29
mm.		228.6	35.1	139.7		25.4	22.2	184.2	13
in.	4"	10.75	1.5	6.19	8	1	7/8	8.5	41
mm.		273.1	38.1	157.2		25.4	22.2	215.9	19
in.	5"	13	1.75	7.31	8	1.12	1	10.5	68
mm.		330.2	44.5	185.7		28.4	25.4	266.7	31
in.	6"	14	1.88	8.5	12	1.12	1	11.5	86
mm.		355.6	47.8	215.9		28.4	25.4	292.1	39
in.	8"	16.5	2.19	10.62	12	1.25	1 1/8	13.75	140
mm.		419.1	55.6	269.7		31.8	28.6	349.3	64
in.	10"	20	2.5	12.75	16	1.38	1 1/4	17	230
mm.		508	63.5	323.9		35.1	31.8	431.8	104
in.	12"	22	2.62	15	20	1.38	1 1/4	19.25	295
mm.		558.8	66.5	381		35.1	31.8	489	134
in.	14"	23.75	2.75	16.25	20	1.5	1 3/8	20.75	355
mm.		603.3	69.9	412.8		38.1	34.9	527.1	161
in.	16"	27	3	18.5	20	1.62	1 1/2	23.75	495
mm.		685.8	76.2	469.9		41.1	38.1	603.3	225
in.	18"	29.25	3.25	21	20	1.75	1 5/8	25.75	630
mm.		743	82.6	533.4		44.5	41.3	654.1	286
in.	20"	32	3.5	23	24	1.75	1 5/8	28.5	810
mm.		812.8	88.9	584.2		44.5	41.3	723.9	367
in.	24"	37	4	27.25	24	2	1 7/8	33	1250
mm.		939.8	101.6	692.2		50.8	47.6	838.2	567

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