Alloy Steel Flanges and Low Alloy Slip On/ Blind Flange manufacturer

ASME B16.5 Class 150 Low Alloy Steel Slip On/ Weld Neck/ Blind Flanges manufacturer And supplier At Lowest Possible Price In Mumbai, India

Flanges used to connect pipes in a particular piping system are easily available in the market. Alloy Steel Flanges Manufacturer In India produces these flanges as per international and in different grades to suit the needs of the application. Low Alloy Steel Slip On Flanges are available in the size range of ½ inch to 48 inches. Chrome Moly Flanges manufacturer In India recommends these flanges as they have a high content of chromium and molybdenum that helps in improving resistance to corrosion and hardenability. Alloy Steel Blind Flanges are used to terminate the pipe temporarily or permanently.

Alloy Steel Weld Neck Flanges are widely used in aerospace and automobile bodies, along with being used in offshore oil drill and onshore engineering. These flanges are also available with threads. Alloy Steel Lap Joint Flange that is threaded or screwed inside the flange bore fit onto the pipe with matching male thread. They have a pressure rating from class 150 to class 2500. These flanges also offer resistance to pitting and crevice corrosion along with offering good durability. AISI 4130 Flange offers properties that a regular carbon flange may fail to provide.

Alloy Steel Forged Flanges are used in water lines, chemical plants, food production systems, processing plants, and the oil and gas industry. Applications that demand the need of high pressure and high temperature AS Ring Type Joint Flanges are the most suitable option. We can even customize these flanges as per the needs of the customer. We pass these through various tests to ensure that they meet the required standard. ASTM A182 Alloy Steel Reducing Flanges manufactured by us are supplied to various customers across the globe at a comparatively cheaper price without compromising on quality.

Table Of Content:

List Of Alloy Steel Flange Grade
Low Alloy Steel Flange Price List In India
Hs Code For Alloy Steel Flange
ASME B16.5 Alloy Steel Pipe Flange Specifications
Standard Dimensions Of Schedule 40 Alloy Steel Forged Flange
ASME B16.5 AS Flanges Pressure Rating Chart
Advantage Of EN 1092-1 Class 150 High Pressure Alloy Steel Flanges
Class 300 Alloy Steel Flange Pressure Rating
Chrome Moly Flanges Length Chart
Alloy Steel Weld Neck Flange Dimensions
Chemical Composition Of Alloy Steel Flanges
ASTM A182 Alloy Steel Flange Bolt Chart
Alloy Steel Forged Flanges Marking

Alloy Steel Lap Joint Flange Dimensions
Mechanical Properties Of Alloy Steel Flanges
Alloy Steel RF Flange Gasket Chart
Class 150 Alloy Steel Flange Pressure Rating
Alloy Steel Flanges Weight Chart
Alloy Steel Blind Flange Dimensions
Types Of Alloy Steel Flanges
Alloy Steel Slip On Flanges Dimensions
EN 1092-1 Alloy Steel A182 Flanges Packaging With Wood Boxes
Alloy Steel RTJ Flanges Measurement
AISI 4130 Flanges Industrial Application

List Of Alloy Steel Flange Grade

ASTM A182 F1 Flanges

ASTM A182 F5 Flanges

ASTM A182 F9 Flanges

ASTM A182 F11 Flanges

ASTM A182 F22 Flanges

ASTM A182 F91 Flanges

Low Alloy Steel Flange Price List In India

Type Of Flanges	Size	SCH	Class	Material	Price In INR (India) Per Piece
Blind Flange	3/4"	Sch 40	150	Alloy Steel	134.00
Blind Flange	3/4"	Sch 40	150	-	156.00
Blind Flange	1"	Sch 40	150	-	245.00
Blind Flange	1-1/2"	Sch 40	150	-	305.00
Blind Flange	2"	Sch 40	150	-	456.00
Blind Flange	3"	Sch 40	150	-	567.00
Blind Flange	4"	Sch 40	150	-	647.00
Blind Flange	6"	Sch 40	150	-	787.00
Blind Flange	8"	Sch 40	150	-	934.00
Weld Neck Flange	2"	SCH STD	150	Alloy Steel	300.00
Weld Neck Flange	3"	SCH STD	150	-	378.00
Weld Neck Flange	4"	SCH STD	150	-	578.00
Weld Neck Flange	6"	SCH STD	150	-	798.00
Weld Neck Flange	8"	SCH STD	150	-	11076.00
Weld Neck Flange	10"	SCH STD	150	-	1456.00
Weld Neck Flange	12"	SCH STD	150	-	1765.00
Slip On Flange	1 /1/2"	80	150	Alloy Steel	300.00
Slip On Flange	2"	80	150	-	378.00
Slip On Flange	3"	80	150	-	578.00
Slip On Flange	4"	80	150	-	789.00
Slip On Flange	6"	80	150	-	943.00
Slip On Flange	8"	80	150	-	1234.00
Socket Weld Flange	3/4"	SCH XS	300	Alloy Steel	164.00
Socket Weld Flange	1”	SCH XS	300	-	189.00
Socket Weld Flange	1-1/2"	SCH XS	300	-	267.00
Socket Weld Flange	2"	SCH XS	300	-	399.00
Socket Weld Flange	3"	SCH XS	300	-	534.00
Socket Weld Flange	4"	SCH XS	300	-	632.00
Socket Weld Flange	6"	SCH XS	300	Alloy Steel	876.00

High-Quality Alloy Steel Flanges manufacturer In India. For final Low Alloy Steel Blind Flanges Price List Please Call on +91-9987870874 or drop an Email to info@fastwell.in.

Hs Code For Alloy Steel Flange

Hs Code	Product Description
73072100	Alloy Steel Flanges

ASME B16.5 Alloy Steel Pipe Flange Specifications

Specification Checklist	Alloy Steel Flanges
Available Grade	ASTM A182 F1/ ASTM A182 F5/ ASTM A182 F9/ ASTM A182 F11/ ASTM A182 F22/ ASTM A182 F91.
Thickness	SCH 5S/ SCH 10/ SCH 40/ SCH 80/ SCH 120/ SCH 160/ SCH 180 To XXS.
Standard Dimensions	EN/ BS/ JIS/ ISO/ P235GH/ API/ EN 1092-2/ DIN 2561/ DIN 2501/ DIN 2527/ EN 1092-1
Chemical Composition	Phosphorus [P] (0.045), Sulfur [S] (0.045), Silicon [Si] (0.15-0.35), Carbon [C] (0.28), Manganese [Mn] (0.60-0.90) etc.
Hardness	143-192
Forging Methods	Forging & Casting, Rolling And Cutting
Pressure Class	Class 150/ Class 300/ Class 400/ Class 600/ Class 900/ Class 150/ Class 2500.
Famous Types, We Manufacturer Of Alloy Steel Flange For Sale	Blind/ Slip On/ Weld Neck/ Socket Weld/ Lap Joint/ Threaded/ Reducing
Manufacturer Size	NPS 1⁄₂", 3/4", 1", 2", 3", 4", 5", 6", 7", 8", 9", 10" To NPS 16”
Face Type	Raised Face/ Flat Face/ Ring Type Joint

Stock Of EN 1092-1 Alloy Steel Lap Joint Flange In Mumbai At Dealer Price, Check ANSI/ ASME B16.5 AS Flanges Dimensions I MM

Standard Dimensions Of Schedule 40 Alloy Steel Forged Flange

NPS	(O.D.) For Outside Diameter	Minimum (Wall Thickness) (T)	Diameter Of Raised Face (RF) (R)	Number of Bolts Holes	Dia. of Holes	B.C. For (Bolt Circle)	SORF Bore I.D. (SB)	WNRF Bore I.D. (WB)	Diameter Of Hub Base (H.B.)	Diameter of Hub Top (H.T.)	SORF Length (S.L.)	WNRF Length (W.L.)
¹⁄₂	3.50	0.38	1.38	4	0.62	2.38	0.88	0.62	1.19	0.84	0.56	1.81
³⁄₄	3.88	0.44	1.69	4	0.62	2.75	1.09	0.82	1.50	1.05	0.56	2.00
1	4.25	0.50	2.00	4	0.62	3.12	1.36	1.05	1.94	1.32	0.62	2.12
1¹⁄₄	4.62	0.56	2.50	4	0.62	3.50	1.70	1.38	2.31	1.66	0.75	2.19
1¹⁄₂	5.00	0.62	2.88	4	0.62	3.88	1.95	1.61	2.56	1.90	0.81	2.38
2	6.00	0.69	3.62	4	0.75	4.75	2.44	2.07	3.06	2.38	0.94	2.44
2¹⁄₂	7.00	0.81	4.12	4	0.75	5.50	2.94	2.47	3.56	2.88	1.06	2.69
3	7.50	0.88	5.00	4	0.75	6.00	3.57	3.07	4.25	3.50	1.12	2.69
3¹⁄₂	8.50	0.88	5.50	8	0.75	7.00	4.07	3.55	4.81	4.00	1.19	2.75
4	9.00	0.88	6.19	8	0.75	7.50	4.57	4.03	5.31	4.50	1.25	2.94
5	10.00	0.88	7.31	8	0.88	8.50	5.66	5.05	6.44	5.56	1.38	3.44
6	11.00	0.94	8.50	8	0.88	9.50	6.72	6.07	7.56	6.63	1.50	3.44
8	13.50	1.06	10.62	8	0.88	11.75	8.72	7.98	9.69	8.63	1.69	3.94
10	16.00	1.12	12.75	12	1.00	14.25	10.88	10.02	12.00	10.75	1.88	3.94
12	19.00	1.19	15.00	12	1.00	17.00	12.88	12.00	14.38	12.75	2.12	4.44
14	21.00	1.31	16.25	12	1.12	18.75	14.14	13.25	15.75	14.00	2.19	4.94
16	23.50	1.38	18.50	16	1.12	21.25	16.16	15.25	18.00	16.00	2.44	4.94
18	25.00	1.50	21.00	16	1.25	22.75	18.18	17.25	19.88	18.00	2.62	5.44
20	27.50	1.62	23.00	20	1.25	25.00	20.20	19.25	22.00	20.00	2.81	5.62
22	29.50	1.75	25.25	20	1.38	27.25	22.22	21.25	24.25	22.00	3.07	5.82
24	32.00	1.81	27.25	20	1.38	29.50	24.25	23.25	26.12	24.00	3.19	5.94

ASME B16.5 AS Flanges Pressure Rating Chart

Temperature In °F	150# According To ASME B16.5	300# According To ASME B16.5	400# According To ASME B16.5	600# According To ASME B16.5	900# According To ASME B16.5	1500# According To ASME B16.5	2500# According To ASME B16.5
-20 to 100	275	720	960	1440	2160	3600	6000
200	230	600	800	1200	1800	3000	5000
300	205	540	720	1080	1620	2700	4500
400	190	495	660	995	1490	2485	4140
500	170	465	620	930	1395	2330	3880
600	140	435	580	875	1310	2185	3640
650	125	430	575	860	1290	2150	3580
700	110	425	565	850	1275	2125	3540
750	95	415	555	830	1245	2075	3460
800	80	405	540	805	1210	2015	3360
850	65	395	530	790	1190	1980	3300
900	50	390	520	780	1165	1945	3240
950	35	380	510	765	1145	1910	3180
1000	20	320	430	640	965	1605	2675
1050	20	310	410	615	925	1545	2570
1100	20	255	345	515	770	1285	2145
1150	20	200	265	400	595	995	1655
1200	20	155	205	310	465	770	1285
1250	20	115	150	225	340	565	945
1300	20	85	115	170	255	430	715
1350	20	60	80	125	185	310	515
1400	20	50	65	95	145	240	400
1450	15	35	45	70	105	170	285
1500	10	25	35	55	80	135	230

Advantage Of EN 1092-1 Class 150 High Pressure Alloy Steel Flanges

Type Of ASME B16.5 Flange	Check Pressure Class Of Pipe Flange	NPS List	Advantages & Applications
Blind Flange	Very High Pressure	All	Pressure Testing/ Connected To Closing Pipe And Valve/ Low Price/ Easy Installation
Slip On Flange	Low Pressure	All	Simple Installation/ Low Price/ Easy To Use
Socket Weld Flange	High Pressure	Small	SW Flange For ; Smooth Bore And Better Fluid Flow
Threaded Flange	Low Pressure	Small	Threaded Flange (NPT/ BSP): Bore Which Matches An External Thread On The Pipe
Weld Neck Flange	High Pressure	All	WN Flange use Conditions Are Critical And Severe.
Lap Joint Flange	Low Pressure	All	Lap Joint Flange Have A Long Neck And Stub End That Is Welded To The Pipe

Class 300 Alloy Steel Flange Pressure Rating

Temperature (in F°)	Class 300
< 100	740
200	680
300	655
400	635
500	605
600	570
650	550
700	530
750	505
800	410
850	320
900	230
950	135
1000	85

Get AWWA C207 Chrome Moly Flanges And AISI 4130 Flange As Per EN 1092-1/ AWWA C207/ BS 4504 Standards

Chrome Moly Flanges Length Chart

(NPS) For Nominal Pipe Size In (inches)	As Per ASME B16.5 Class 150
(NPS) For Nominal Pipe Size In (inches)	Flange Diameter In (inch)	Bolts Number	Bolt Diameter In (inch)	Bolt Holes (B.H.) Diameter In (inch)	Bolt Circle (B.C.) In(inch)
1/4	3-3/8	4	1/2	0.62	2-1/4
1/2	3-1/2	4	1/2	0.62	2-3/8
3/4	3-7/8	4	1/2	0.62	2-3/4
1	4-1/4	4	1/2	0.62	3-1/8
1-1/4	4-5/8	4	1/2	0.62	3-1/2
1-1/2	5	4	1/2	0.62	3-7/8
2	6	4	5/8	0.75	4-3/4
2-1/2	7	4	5/8	0.75	5-1/2
3	7-1/2	4	5/8	0.75	6
3-1/2	8-1/2	8	5/8	0.75	7
4	9	8	5/8	0.75	7-1/2
5	10	8	3/4	0.88	8-1/2
6	11	8	3/4	0.88	9-1/2
8	13-1/2	8	3/4	0.88	11-3/4
10	16	12	7/8	1	14-1/4
12	19	12	7/8	1	17
14	21	12	1	1.12	18-3/4
16	23-1/2	16	1	1.12	21-1/4
18	25	16	1-1/8	1.25	22-3/4
20	27-1/2	20	1-1/8	1.25	25
24	32	20	1-1/4	1.38	29-1/2

Alloy Steel Weld Neck Flange Dimensions

Size (NPS) in Inches	NPS (Normal Pipe Size) Size in Millimeter	Outer Diameter For (O.D.)	Thickness Of Weld Neck Flange	Hub Outer Diameter	Weld Neck Outer Diameter	Length Of ASME B16.5 Welding Neck	Daimeter Of WN Bore	Diameter Of RF (Raised Face)	Raised Face (RF) Height	PCD	Face Of Weld
		A	B	C	D	E	F	G	H	I	J
1/2	15	90	9.6	30	21.3	46	-	34.9	2	60.3	1.6
3/4	20	100	11.2	38	26.7	51		42.9	2	69.9	1.6
1	25	110	12.7	49	33.4	54		50.8	2	79.4	1.6
1 1/4	32	115	14.3	59	42.2	56		63.5	2	88.9	1.6
1 1/2	40	125	15.9	65	48.3	60		73	2	98.4	1.6
2	50	150	17.5	78	60.3	62		92.1	2	120.7	1.6
2 1/2	65	180	20.7	90	73	68		104.8	2	139.7	1.6
3	80	190	22.3	108	88.9	68		127	2	152.4	1.6
3 1/2	90	215	22.3	122	101.6	70		139.7	2	177.8	1.6
4	100	230	22.3	135	114.3	75		157.2	2	190.5	1.6
5	125	255	22.3	164	141.3	87		185.7	2	215.9	1.6
6	150	280	23.9	192	168.3	87		215.9	2	241.3	1.6
8	200	345	27	246	219.1	100		269.9	2	298.5	1.6
10	250	405	28.6	305	273	100		323.8	2	362	1.6
12	300	485	30.2	365	323.8	113		381	2	431.8	1.6
14	350	535	33.4	400	355.6	125		412.8	2	476.3	1.6
16	400	595	35	457	406.4	125		469.9	2	539.8	1.6
18	450	635	38.1	505	457.2	138		533.4	2	577.9	1.6
20	500	700	41.3	559	508	143		584.2	2	635	1.6
24	600	815	46.1	663	610	151		692.2	2	749.3	1.6

Chemical Composition Of Alloy Steel Flanges

ASTM A182 Low Alloy Steel Flanges Chemical Composition, %
ID. Symbol*	C	Mn	P	S	Si	Cr	Mo	Others
ASTM A182 F1 Flanges	0.28	0.60-0.90	0.045	0.045	0.15-0.35	-	0.44-0.65	-
ASTM A182 F5 Flanges	0.15	0.30-0.60	0.030	0.030	0.50	4.0-6.0	0.44-0.65	*A
ASTM A182 F9 Flanges	0.15	0.30-0.60	0.030	0.030	0.50-1.00	8.0-10.0	0.90-1.10	-
ASTM A182 F11 Flanges	0.05-0.15	0.30-0.60	0.030	0.030	0.50-1.00	1.00-1.50	0.44-0.65	-
ASTM A182 F22 Flanges	0.05-0.15	0.30-0.60	0.040	0.040	0.50	2.00-2.50	0.87-1.13	-
ASTM A182 F91 Flanges	0.08-0.12	0.30-0.60	0.020	0.010	0.20-0.50	8.0-9.5	0.85-1.05	*D

ASTM A182 Alloy Steel Flange Bolt Chart

Size in (Inches)	Size in (Millimeter)	Number of Bolts	Bolt (UNC) Size	RF (Raised Face) Stud Length	Stud (ISO) Size	Machine Flange Bolt Length
1/2	15	4	1/2	55	M14	50
3/4	20	4	1/2	65	M14	50
1	25	4	1/2	65	M14	55
1 1/4	32	4	1/2	70	M14	55
1 1/2	40	4	1/2	70	M14	65
2	50	4	5/8	85	M16	70
2 1/2	65	4	5/8	90	M16	75
3	80	4	5/8	90	M16	75
3 1/2	90	8	5/8	90	M16	75
4	100	8	5/8	90	M16	75
5	125	8	3/4	95	M20	85
6	150	8	3/4	100	M20	85
8	200	8	3/4	110	M20	90
10	250	12	7/8	115	M24	100
12	300	12	7/8	120	M24	100
14	350	12	1	135	M27	115
16	400	16	1	135	M27	115
18	450	16	1 1/8	145	M30	125
20	500	20	1 1/8	160	M30	140
24	600	20	1 1/4	170	M33	150

Alloy Steel Forged Flanges Marking

Alloy Steel Flanges Marking includes ANSI Or ASME/ ASA Code

Name of Manufacturer = (Fastwell Engineering)
NPS = (4 Inch)
Flanges Type = (ASME B16.36 Orifice)
Schedule = (SCH 80)
Material Designation = (ASTM A182 F11)
Class = (300#)
Country Name = (Made In India)

Alloy Steel Lap Joint Flange Dimensions

Normal Pipe Size For (NPS) in Inches	Normal Pipe Size For (NPS) in Millimeter	Outer Diameter For (O.D.)	Wall Thickness	Lapped Thick.	Lapped (I.D.) For Inside Daimeter	PCD	Thickness Of Lapped	Radius Of Lapped	Bolts No.	Bolts UNC Size	Machine Bolt Length	Length Of Stud (RF)	Size Of Bolts Hole	Size Of ISO Stud	Weight In KG (Kilogram)
		A	B	C	D	E	G
1/2	15	90	30	16	22.9	60.3	11.2	3	4	1/2	50	55	5/8	M14	0.8
3/4	20	100	38	16	28.2	69.9	12.7	3	4	1/2	50	65	5/8	M14	0.9
1	25	110	49	17	34.9	79.4	14.3	3	4	1/2	55	65	5/8	M14	0.9
1 1/4	32	115	59	21	43.7	88.9	15.9	5	4	1/2	55	70	5/8	M14	1.4
1 1/2	40	125	65	22	50	98.4	17.5	6	4	1/2	65	70	5/8	M14	1.4
2	50	150	78	25	62.5	120.7	19.1	8	4	5/8	70	85	3/4	M16	2.3
2 1/2	65	180	90	29	75.4	139.7	22.3	8	4	5/8	75	90	3/4	M16	3.2
3	80	190	108	30	91.4	152.4	23.9	10	4	5/8	75	90	3/4	M16	3.7
3 1/2	90	215	122	32	104.1	177.8	23.9	11	8	5/8	75	90	3/4	M16	5
4	100	230	135	33	116.8	190.5	23.9	11	8	5/8	75	90	3/4	M16	5.9
5	125	255	164	36	144.4	215.9	23.9	11	8	3/4	85	95	7/8	M20	6.8
6	150	280	192	40	171.4	241.3	25.4	13	8	3/4	85	100	7/8	M20	8.6
8	200	345	246	44	222.2	298.5	28.6	13	8	3/4	90	110	7/8	M20	13.7
10	250	405	305	49	277.4	362	30.2	13	12	7/8	100	115	1	M24	19.5
12	300	485	365	56	328.2	431.8	31.8	13	12	7/8	100	120	1	M24	29
14	350	535	400	79	360.2	476.3	35	13	12	1	115	135	1 1/8	M27	41
16	400	595	457	87	411.2	539.8	36.6	13	16	1	115	135	1 1/8	M27	54
18	450	635	505	97	462.3	577.9	39.7	13	16	1 1/8	125	145	1 1/4	M30	59
20	500	700	559	103	514.4	635	42.9	13	20	1 1/8	140	160	1 1/4	M30	75
24	600	815	663	111	616	749.3	47.9	13	20	1 1/4	150	170	1 3/8	M33	100

Mechanical Properties Of Alloy Steel Flanges

ASTM A182 Low Alloy Steel Flanges Mechanical Properties
Grade	Tensile Strength minimum ksi[MPa]	Yield Strength minimum ksi[MPa]	Elongation, minimum %	Reduction of Area, minimum %	Brinell Hardness Number, HBW
ASTM A182 F1 Flanges	70[485]	40[275]	20	30	143-192
ASTM A182 F5 Flanges	70[485]	40[275]	20	35	143-217
ASTM A182 F9 Flanges	85[585]	55[380]	20	40	179-217
ASTM A182 F11 Flanges	60[415]	30[205]	20	45	121-174
ASTM A182 F22 Flanges	60[415]	30[205]	20	35	≤170
ASTM A182 F91 Flanges	90[620]	60[415]	20	40	190-248

Alloy Steel RF Flange Gasket Chart

NPS For (Normal Pipe Size)	Gasket (I.D.) Inside Daimeter	Gasket (O.D.) Outside Daimeter
NPS For (Normal Pipe Size)	Gasket (I.D.) Inside Daimeter	#150LB	#300LB	#400LB	#600LB	#900LB
1/2"	0.84	1.875	2.125	2.125	2.125	2.50
3/4"	1.06	2.25	2.625	2.625	2.625	2.75
1"	1.31	2.625	2.875	2.875	2.875	3.125
1 1/4"	1.66	3	3.25	3.25	3.25	3.50
1 1/2"	1.91	3.375	3.75	3.75	3.75	3.875
2"	2.38	4.125	4.375	4.375	4.375	5.625
2 1/2"	2.88	4.875	5.125	5.125	5.125	6.50
3"	3.50	5.375	5.875	5.875	5.875	6.625
4"	4.50	6.875	7.125	7.00	7.625	8.125
5"	5.56	7.75	8.50	8.375	9.50	9.75
6"	6.62	8.75	9.875	9.75	10.50	11.375
8"	8.62	11	12.125	12.00	12.625	14.125
10"	10.75	13.375	14.25	14.125	15.75	17.125
12"	12.75	16.125	16.625	16.50	18.00	19.625

Call For Material Test Certificate And Sample Of BS 4504 Alloy Steel Forged Flanges, Refer MSS SP-44 AS Ring Type Joint Flanges Schedule Chart/ Specification/ Pressure Rating

Class 150 Alloy Steel Flange Pressure Rating

Temperature (in F°)	Class 150
< 100	285
200	260
300	230
400	200
500	170
600	140
650	125
700	110
750	95
800	80
850	65
900	50
950	35
1000	20

Alloy Steel Flanges Weight Chart

Nominal Pipe Size For (NPS)	Slip On Flange (SORF)	Threaded Flange (NPT)	Socket Weld Flange (SWRF)	Lap Joint Flange (Loose)	Blind Flange (BLRF)	Weld Neck Flange (WNRF)
½	1	1	2	1	2	2
¾	2	2	2	2	2	2
1	2	2	2	2	2	3
1¼	3	3	3	3	3	3
1½	3	3	3	3	4	4
2	5	5	5	5	5	6
2½	8	8	8	8	7	10
3	9	9	9	9	9	11.5
3½	11	12	11	11	13	12
4	13	13	13	13	17	16.5
5	15	15	15	15	20	21
6	19	19	19	19	27	26
8	30	30	30	30	47	42
10	43	43	43	43	70	54
12	64	64	64	64	123	88
14	90	90	90	105	140	114
16	106	98	98	140	180	140
18	130	130	130	160	220	165
20	165	165	165	195	285	197
22	185	185	185	245	355	225
24	220	220	220	275	430	268

Alloy Steel Blind Flange Dimensions

NPS For (Normal Pipe Size)	Outside Daimeter Of (O.D.) (A)	Wall Thickness Of (B)	Daimeter Of Raised Face (C)	(D) (B.C.D.)	# Flanges Bolts Holes	Daimeter Of Bolt Holes	Approx. Weight In KG (Kilogram)
1/2"	3-1/2	7/16	1-3/8	2-3/8	4	5/8	2
3/4"	3-7/8	1/2	1-11/16	2-3/4	4	5/8	2
1"	4-1/4	9/16	2	3-1/8	4	5/8	2
1-1/4"	4-5/8	5/8	2-1/2	3-1/2	4	5/8	3
1-1/2"	5	11/16	2-7/8	3-7/8	4	5/8	3
2"	6	3/4	3-5/8	4-3/4	4	3/4	4
2-1/2"	7	7/8	4-1/8	5-1/2	4	3/4	7
3"	7-1/2	15/16	5	6	4	3/4	9
3-1/2"	8-1/2	15/16	5-1/2	7	8	3/4	13
4"	9	15/16	6-3/16	7-1/2	8	3/4	17
5"	10	15/16	7-5/16	8-1/2	8	7/8	20
6"	11	1	8-1/2	9-1/2	8	7/8	27
8"	13-1/2	1-1/8	10-5/8	11-3/4	8	7/8	47
10"	16	1-3/16	12-3/4	14-1/4	12	1	67
12"	19	1-1/4	15	17	12	1	123
14"	21	1-3/8	16-1/4	18-3/4	12	1-1/8	139
16"	23-1/2	1-7/16	18-1/2	21-1/4	16	1-1/8	187
18"	25	1-9/16	21	22-3/4	16	1-1/4	217
20"	27-1/2	1-11/16	23	25	20	1-1/4	283
24"	32	1-7/8	27-1/4	29-1/2	20	1-3/8	415

Types Of Alloy Steel Flanges

Alloy Steel Socket Weld Flange

Alloy Steel Plate Flange

Alloy Steel Lap Joint Flange

Alloy Steel Blind Flange

Alloy Steel Slip On Flange

Alloy Steel Weld Neck Flange

Alloy Steel Spectacle Blind Flange

Alloy Steel Orifice Flanges

Alloy Steel Puddle Flange

Alloy Steel Threaded Flange

Alloy Steel Raised Face Flange

Alloy Steel RTJ Flange

Alloy Steel Square Flange

Alloy Steel High Hub Blind Flange

Alloy Steel Flat Face Flange

Alloy Steel Slip On Flanges Dimensions

Normal Pipe Size For (NPS)	(Inside Diameter) For I.D.	O.D. For (Outside Daimeter)	B.C. For (Circle Bolt)	Raised (R)	RF For (Raised Face)	H For (Hight)	Raised Face Wall Thickness	Thickness1	Flat Face (FF) (Thickness2)	Bolts Holes For (B.C.)	Number Of Bolt Hole (B.H.)
1/2	0.88	3.50	2.38	1.38	.063	1.19	.62	.38	.56	.62	4
3/4	1.09	3.88	2.75	1.69	.063	1.50	.62	.44	.56	.62	4
1	1.36	4.25	3.12	2.00	.063	1.94	.69	.50	.63	.62	4
1-1/4	1.70	4.62	3.50	2.50	.063	2.31	.81	.56	.75	.62	4
1-1/2	1.97	5.00	3.88	2.88	.063	2.56	.88	.62	.82	.62	4
2	2.44	6.00	4.75	3.62	.063	3.06	1.00	.69	.94	.75	4
2-1/2	2.94	7.00	5.50	4.12	.063	3.56	1.12	.82	1.06	.75	4
3	3.57	7.50	6.00	5.00	.063	4.25	1.19	.88	1.13	.75	4
3-1/2	4.07	8.50	7.00	5.50	.063	4.81	1.25	.88	1.19	.75	8
4	4.57	9.00	7.50	6.19	.063	5.31	1.31	.88	1.25	.75	8
5	5.66	10.00	8.50	7.31	.063	6.44	1.44	.88	1.38	.88	8
6	6.72	11.00	9.50	8.50	.063	7.56	1.56	.94	1.50	.88	8
8	8.72	13.50	11.75	10.62	.063	9.69	1.75	1.06	1.69	.88	8
10	10.88	16.00	14.25	12.75	.063	12.00	1.94	1.13	1.88	1.00	12
12	12.88	19.00	17.00	15.00	.063	14.38	2.19	1.19	2.13	1.00	12
14	14.14	21.00	18.75	16.25	.063	15.75	2.25	1.32	2.19	1.12	12
16	16.16	23.50	21.25	18.50	.063	18.00	2.50	1.38	2.44	1.12	16
18	18.18	25.00	22.75	21.00	.063	19.88	2.69	1.50	2.63	1.25	16
20	20.20	27.50	25.00	23.00	.063	22.00	2.88	1.63	2.83	1.25	20
22	22.22	29.50	27.25	25.25	.063	24.25	3.13	1.75	3.07	1.38	20
24	24.25	32.00	29.50	27.25	.063	26.12	3.25	1.82	3.19	1.38	20