Stainless Steel Orifice Flange | CS Orifice Plate Flange Manufacturer

Table Of Content:

ASME B16.36 Orifice Flange specification
Stainless Steel Orifice Flange Price
Carbon Steel Orifice Flange Price List
Types Of Orifice Flange ASME B16.36
Restriction orifice plate types
Orifice Plate Types
Pressure Taps For Orifice Plates
Restriction Orifice Isometric Symbol
Restriction Orifice Design Standard
Orifice Flange Jack Screw Size
Tapping Standard Of Orifice Flange
Advantages And Disadvantages Of Using Orifice Plate
Types of Orifice Flange
ASME B16.36 Orifice Flange Dimensions
300# Orifice Flange Dimensions
Class 600 Orifice Flange Dimensions In mm

Class 900 Orifice Flange Dimensions
1500# Orifice Flange Dimensions
Class 2500 Orifice Flange Dimensions
Orifice Flange Drawing
ASTM A105 Orifice Flange Assembly
Orifice Plate Application
Stainless Steel Orifice Flange Weight Chart
Orifice Flange Pressure Rating
Wall Thickness Of Orifice Plate
Hs Code Of Stainless Steel Orifice Flange
Class 300 Orifice Flange Bolt Size
Class 600 Orifice Flange Bolt Chart
Class 900 Orifice Flange Bolt Size
Class 1500 Orifice Flange Bolt Chart
Class 2500 Orifice Flange Bolt Size
Orifice Flange Gasket Types
ASME B16.36 Orifice Flange Tolerances

Carbon Steel Orifice Plate Flange Manufacturer in India as per ASME B16.36

ASME B16.36 Orifice Flange Specification

Size In Ready Stock :

NPS ½” – 24”
DN15 – DN1200

Orifice Plate Types :

Concentric Orifice Plate
Eccentric Orifice Plate

Manufacturing Method :

Cast
Forged
Plate

Common Thickness :

SCH 10/ 20/ 40
SCH 60/ 80/ 100
SCH 120/ 140
SCH 160

Pressure :

300 - 2500 lbs

Standard :

ASME B16.36

Type :

Raised face (RF)
Ring type joint (RTJ)

Manufacturing Way :

Forged / drilling
Rolled/ Turning
CNC machining
Milling / stamping

Bolts Hole :

4 To 24

Coating :

Oil Black Paint
Anti-rust Paint
Zinc Plated
Yellow Transparent

Surface Finish :

Serrated finish
Smooth Finish
Spiral serrated
Stock finish

Uses :

Power generation plant
Petrochemical plants
Petrochemicals industry
Oil & gas plants
Nuclear energy sector
Sea water exchanger

Types Of Packaging :

Carton box
Plastic bag
Wooden case
Or custom as required

Logistics Way :

By Air
By Sea
Saudi Arabia = 7 to 8 day
UAE = 6 to 7 day
Oman = 5 to 6 days

Sour Service :

Drilling/ Electroplating
Threading/ Forging
Cutting/ Minor Fabrication
CNC machined/ Casting
Sand Blasting/ Rolling

Connection :

Threaded
Welding

Material:

Carbon steel
Nickel alloy
Titanium
Copper nickel
Alloy steel
Stainless steel

Testing :

Impact test
Material inspection
Hardness test
Tensile test
Visual inspection
PMI test

Process :

Forging & machining
Surface finish
Material selection & cutting
Shaping
Heat treatment & forming

Resistance :

Nitric Acid
Sulfuric Acidr
Hydrochloric Acid
Alkalies and Salts
Phosphoric Acid
Organic Acid
Seawater

Germany Standards :

DIN 19214

For More Information Please Contact US

Stainless Steel Orifice Flange Price

Type = Orifice Plate Flange
Grade = ASTM A182 F316L

Size In Inch	SCH	Class	Price In US$ (Dollar) per unit	Price In Dirham (AED) per unit
3/4	40	150	US$4.10	15.06
1	40	150	US$6.53	23.98
2	40	150	US$9.06	33.28
3	40	150	US$11.77	43.23
4	80	300	US$15.12	55.54
6	80	300	US$19.82	72.80
8	80	300	US$23.80	87.42
10	80	300	US$30.22	111.00
12	80	300	US$41.04	150.74

Carbon Steel Orifice Flange Price List

Type = Orifice Weld Neck Flange
Grade = ASTM A105 Carbon Steel

Size In Inch	SCH	Class	Price In US$ (Dollar) per unit	Price In Dirham (AED) per unit
3/4	40	150	US$1.61	5.91
1	40	150	US$2.82	10.36
2	40	150	US$4.24	15.57
3	40	150	US$7.82	28.72
4	40	150	US$11.77	43.23
6	40	150	US$16.09	59.10
8	40	150	US$22.45	82.46
10	40	150	US$27.25	100.09

Types Of Orifice Flange ASME B16.36

Orifice plate flange (made from plate)
CNC machined orifice flange
Cast orifice flange
Forged orifice flange

Restriction Orifice Plate Types

Single Chamber
Dual Chamber
Double Block and Bleed
Integral Orifice Plates
Eccentric Orifice Flats
Segmental Orifice Plate
Conical Orifice Plate
Edge Orifice Plate
Edge Orifice Plate

Supplier of ASTM A182 F304 Weld Neck Orifice Flange with Jack Screw, View RTJ Orifice Plate Types & Pressure Taps

Orifice Plate Types

Concentric Orifice Plate
Eccentric Orifice Plate
Segmental Orifice Plate
Quadrant Edge Orifice

Pressure Taps For Orifice Plates

1.Vena-contractive tap
2.Radius tap
3.Pipe And Full Flow taps
4.Corner taps
5.Flange tap
6.Elbow tap

Restriction Orifice Isometric Symbol

Type	Symbol	Image
Restriction Orifice

Restriction Orifice Design Standard

API 2531
ISO 5168
ISA RP 3.2
EC 60534-8-3
API MPMS 14.3.2
ISO 5024

Orifice Flange Jack Screw Size

NPS	Class 300			Class 400			Class 600			Class 900			Class 1500
NPS	Sizes	Lengths	Size Of Hole	Sizes	Lengths	Size Of Hole	Sizes	Lengths	Size Of Hole	Sizes	Lengths	Size Of Hole	Sizes	Lengths	Size Of Hole
1	5/8	2-3/4	11/16	5/8	2-3/4	11/16	5/8	2-3/4	11/16	5/8	3-1/4	3/4	5/8	3-1/4	3/4
1-1/4	5/8	2-3/4	11/16	5/8	2-3/4	11/16	5/8	2-3/4	11/16	5/8	3-1/4	3/4	5/8	3-1/4	3/4
1-1/2	5/8	2-3/4	11/16	5/8	2-3/4	11/16	5/8	2-3/4	11/16	5/8	3-1/4	3/4	5/8	3-1/4	3/4
2	5/8	2-3/4	11/16	5/8	2-3/4	11/16	5/8	2-3/4	11/16	5/8	3-1/4	3/4	5/8	3-1/4	3/4
2-1/2	5/8	2-3/4	13/16	5/8	2-3/4	13/16	3/4	2-3/4	13/16	5/8	3-1/2	3/4	5/8	3-1/2	3/4
3	3/4	2-3/4	13/16	3/4	2-3/4	13/16	3/4	2-3/4	13/16	3/4	3-1/4	7/8	3/4	3-3/4	7/8
4	3/4	2-3/4	13/16	3/4	3-1/4	7/8	3/4	3-1/4	7/8	3/4	3-1/2	7/8	3/4	4	7/8
5	3/4	2-3/4	7/8	3/4	3-1/4	7/8	3/4	3-1/2	7/8	3/4	3-3/4	7/8	3/4	5	7/8
6	3/4	2-3/4	7/8	7/8	3-1/2	1	7/8	4	1	1	4	1-1/8	1	5	1-1/8
8	3/4	3	7/8	7/8	4	1	7/8	4	1	1	4-1/2	1-1/8	1	5-1/2	1-1/8
10	1	3-1/2	1-1/8	7/8	4	1	7/8	4-1/2	1	1	4-1/2	1-1/8	1	6	1-1/8
12	1	3-1/2	1-1/8	7/8	4	1	7/8	4-1/2	1	1	5	1-1/8	1	7	1-1/8

Tapping Standard Of Orifice Flange

Advantages And Disadvantages Of Using Orifice Plate

Advantages	Disadvantages
Easy to Install and uninstall	Square root characteristics
Cost Effective	limited ranges of pressure
A wide range	Fluid must be in single phase
Good quality	limited ranges of temperature
Very reliable	Need to be replaced specific Time
Low pressure drops	High pressure drop

Types Of Orifice Flange

Orifice Plate Flange

Carbon Steel Orifice Flange

SS Orifice Flange

Orifice Flange ASME B16.36

Weld Neck Orifice Flange

Rtj Orifice Plate

Restriction Orifice Flange

Ro Flange

Socket Weld Orifice Flange

Ring Joint Orifice Plate

Eccentric Orifice Plate

Concentric Orifice Plate

Blind Orifice Plate

Orifice Tapping

Flange Tapping Orifice Plate

ANSI B16.36 Orifice Flange

Orifice WN Flange

Threaded Orifice Flange

A182 F316 Orifice Flange

SS 304 Orifice Flange

Other Materials Of ASME B16.36 Orifice Flange

Duplex Orifice Flange

Super Duplex Orifice Flanges

Titanium Orifice Flanges

Mild Steel Orifice Flange

Nickel Alloy Orifice Flanges

Copper Orifice Flanges

Inconel Orifice Flanges

Ductile Iron Orifice Flanges

Aluminum Orifice Flanges

Alloy Steel Orifice Flanges

ASTM A350 LF2 Orifice Flanges

UNS S31803 Orifice Flanges

ASME B16.36 Orifice Flange Dimensions

Extra Machining SS 316 Ro Flange Stockist in India, Check Restriction Orifice Flange Design Standard and Dimensions in Class 300 To 2500

300# Orifice Flange Dimensions

Orifice Size in Inchch	Orifice Size in mm	Outer Diameter (O.D.)	Orifice Flange Thickness	Hub Outer Diameter	Weld Neck Outer Diameter	Length Of Welding Neck	RF Diameter	Height Of RF	PCD	Orifice Hole diameter	Number of Bolts	Bolt Size In UNC	Stud Length Of RF	Size Of Hole	Stud Size In ISO	Weight in Kilogram
A	B	C	D	E	F	G	H	I	-	-	-	-	-	-	-	-
1	25	125	36.6	54	33.4	81	50.8	2	88.9	6.4	4	5/8	125	3/4	M16	4.5
1 1/2	40	155	36.6	70	48.3	84	73	2	114.3	6.4	4	3/4	135	7/8	M20	6.5
2	50	165	36.6	84	60.3	84	92.1	2	127	6.4	8	5/8	125	3/4	M16	7
2 1/2	65	190	36.6	100	73	87	104.8	2	149.2	6.4	8	3/4	135	7/8	M20	7.5
3	80	210	36.6	117	88.9	87	127	2	168.3	9.5	8	3/4	135	7/8	M20	9.4
4	100	255	36.6	146	114.3	90	157.2	2	200	12.7	8	3/4	135	7/8	M20	13.2
6	150	320	36.6	206	168.3	98	215.9	2	269.9	12.7	12	3/4	135	7/8	M20	14.6
8	200	380	39.7	260	219.1	110	269.9	2	330.2	12.7	12	7/8	145	1	M24	30
10	250	445	46.1	321	273	116	323.8	2	387.3	12.7	16	1	165	1 1/8	M27	41
12	300	520	49.3	375	323.8	129	381	2	450.8	12.7	16	1 1/8	180	1 1/4	M30	62
14	350	585	52.4	425	355.6	141	412.8	2	514.4	12.7	20	1 1/8	185	1 1/4	M30	84
16	400	650	55.6	483	406.4	144	469.9	2	571.5	12.7	20	1 1/4	195	1 3/8	M33	111
18	450	710	58.8	533	457	157	533.4	2	628.6	12.7	24	1 1/4	205	1 3/8	M33	138
20	500	775	62	587	508	160	584.2	2	685.8	12.7	24	1 1/4	215	1 3/8	M33	171
24	600	915	68.3	702	610	167	692.2	2	812.8	12.7	24	1 1/2	240	1 5/8	M39	247

Class 600 Orifice Flange Dimensions In mm

Orifice Size in Inchch	Orifice Size in mm	Outer Diameter (O.D.)	Orifice Flange Thickness	Hub Outer Diameter	Weld Neck Outer Diameter	Length Of Welding Neck	RF Diameter	Height Of RF	PCD	Orifice Hole diameter	Number of Bolts	Bolt Size In UNC	Stud Length Of RF	Size Of Hole	Stud Size In ISO	Weight in Kilogram
A	B	C	D	E	F	G	H	I	-	-	-	-	-	-	-	-
1	25	125	36.6	54	33.5	81	50.8	7	88.9	6.4	4	5/8	125	3/4	M16	5.5
1 1/2	40	155	36.6	70	48.3	84	73	7	114.3	6.4	4	3/4	135	7/8	M20	7.8
2	50	165	36.6	84	60.3	84	92.1	7	127	6.4	8	5/8	125	3/4	M16	8.3
2 1/2	65	190	36.6	100	73	87	104.8	7	149.2	6.4	8	3/4	135	7/8	M20	10.8
3	80	210	36.6	117	88.9	87	127	7	168.3	9.5	8	3/4	135	7/8	M20	12.6
4	100	275	38.1	152	114.3	102	157.2	7	215.9	12.7	8	7/8	150	1	M24	19
6	150	355	47.7	222	168.3	117	215.9	7	292.1	12.7	12	1	180	1 1/8	M27	37
8	200	420	55.6	273	219.1	133	269.9	7	349.2	12.7	12	1 1/8	195	1 1/4	M30	53
10	250	510	63.5	343	273	152	323.8	7	431.8	12.7	16	1 1/4	220	1 3/8	M33	86
12	300	560	66.7	400	323.8	156	381	7	489	12.7	20	1 1/4	230	1 3/8	M33	102
14	350	605	69.9	432	355.6	165	412.8	7	527	12.7	20	1 3/8	240	1 1/2	M36	150
16	400	685	76.2	495	406.4	178	469.9	7	603.2	12.7	20	1 1/2	260	1 5/8	M39	190
18	450	745	82.6	546	457.2	184	533.4	7	654	12.7	20	1 5/8	280	1 3/4	M42	240
20	500	815	88.9	610	508	190	584.2	7	723.9	12.7	24	1 5/8	300	1 3/4	M42	295
24	600	940	101.6	718	609.6	203	692.2	7	838.2	12.7	24	1 7/8	335	2	M48	365

Class 900 Orifice Flange Dimensions

Orifice Size in Inchch	Orifice Size in mm	Outer Diameter (O.D.)	Orifice Flange Thickness	Hub Outer Diameter	Weld Neck Outer Diameter	Length Of Welding Neck	RF Diameter	Height Of RF	PCD	Orifice Hole diameter	Number of Bolts	Bolt Size In UNC	Stud Length Of RF	Size Of Hole	Stud Size In ISO	Weight in Kilogram
A	B	C	D	E	F	G	H	I	-	-	-	-	-	-	-	-
1	25	150	38.1	52	33.5	83	50.8	7	101.6	6.4	4	7/8	150	1	M24	5.4
1 1/2	40	180	38.1	70	48.3	89	73	7	123.8	6.4	4	1	160	1 1/8	M27	7.8
2	50	215	38.1	105	60.3	102	92.1	7	165.1	6.4	8	7/8	150	1	M30	11.5
2 1/2	65	245	41.3	124	73	105	104.8	7	190.5	6.4	8	1	165	1 1/8	M27	15.8
3	80	240	38.1	127	88.9	102	127	7	190.5	9.5	8	7/8	150	1	M24	22
4	100	290	44.5	159	114.3	114	157.2	7	235	12.7	8	1 1/8	180	1 1/4	M30	22
6	150	380	55.6	235	168.3	140	215.9	7	317.5	12.7	12	1 1/8	195	1 1/4	M30	70
8	200	470	63.5	298	219.1	162	269.9	7	393.7	12.7	12	1 3/8	230	1 1/2	M36	119
10	250	545	69.9	368	273	184	323.8	7	469.9	12.7	16	1 3/8	240	1 1/2	M36	204
12	300	610	79.4	419	323.8	200	381	7	533.4	12.7	20	1 3/8	260	1 1/2	M36	303
14	350	640	85.8	451	355.6	213	412.8	7	558.8	12.7	20	1 1/2	280	1 5/8	M39	400
16	400	705	88.9	508	406.4	216	469.9	7	616	12.7	20	1 5/8	290	1 3/4	M42	510
18	450	785	101.9	565	457.2	229	533.4	7	685.8	12.7	20	1 7/8	330	2	M48	738
20	500	855	108	622	508	248	584.2	7	749.3	12.7	20	2	355	2 1/8	M52	932
24	600	1040	139.7	749	609.6	292	692.2	7	901.7	12.7	20	2 1/2	445	2 5/8	M64	1511

1500# Orifice Flange Dimensions

Orifice Size in Inchch	Orifice Size in mm	Outer Diameter (O.D.)	Orifice Flange Thickness	Hub Outer Diameter	Weld Neck Outer Diameter	Length Of Welding Neck	RF Diameter	Height Of RF	PCD	Orifice Hole diameter	Number of Bolts	Bolt Size In UNC	Stud Length Of RF	Size Of Hole	Stud Size In ISO	Weight in Kilogram
A	B	C	D	E	F	G	H	I	-	-	-	-	-	-	-	-
1	25	150	38.1	52	33.5	83	50.8	7	101.6	6.4	4	7/8	150	1	M24	5.4
1 1/2	40	180	38.1	70	48.3	89	73	7	123.8	6.4	4	1	160	1 1/8	M27	7.8
2	50	215	38.1	105	60.3	102	92.1	7	165.1	6.4	8	7/8	150	1	M24	11.5
2 1/2	65	245	41.3	124	73	105	104.8	7	190.5	6.4	8	1	165	1 1/8	M27	15.8
3	80	265	47.7	133	88.9	117	127	7	203.2	9.5	8	1 1/8	185	1 1/4	M30	22
4	100	310	54	162	114.3	124	157.2	7	241.3	12.7	8	1 1/4	205	1 3/8	M33	22
6	150	395	82.6	229	168.3	171	215.9	7	317.5	12.7	12	1 3/8	265	1 1/2	M36	70
8	200	485	92.1	292	219.1	213	269.9	7	393.7	12.7	12	1 5/8	300	1 3/4	M42	119
10	250	585	108	368	273	254	323.8	7	482.6	12.7	12	1 7/8	345	1	M48	204
12	300	675	123.9	451	323.8	283	381	7	571.5	12.7	16	2	380	2 1/8	M52	303
14	350	750	133.4	495	355.6	298	412.8	7	635	12.7	16	2 1/4	415	2 3/8	M56	400
16	400	825	146.1	552	406.4	311	469.9	7	704.8	12.7	16	2 1/2	450	2 5/8	M64	510
18	450	915	162	597	457.2	327	533.4	7	774.7	12.7	16	2 3/4	500	2 7/8	M72	738
20	500	985	177.8	641	508	356	584.2	7	831.8	12.7	16	3	545	3 1/8	M76	932
24	600	1170	203.2	762	609.6	406	692.2	7	990.6	12.7	16	3 1/2	620	3 5/8	M90	1511

Class 2500 Orifice Flange Dimensions

Orifice Size in Inchch	Orifice Size in mm	Outer Diameter (O.D.)	Orifice Flange Thickness	Hub Outer Diameter	Weld Neck Outer Diameter	Length Of Welding Neck	RF Diameter	Height Of RF	PCD	Orifice Hole diameter	Number of Bolts	Bolt Size In UNC	Stud Length Of RF	Size Of Hole	Stud Size In ISO	Weight in Kilogram
A	B	C	D	E	F	G	H	I	-	-	-	-	-	-	-	-
1	25	160	38.1	57	33.5	92	50.8	7	108	6.4	4	7/8	150	1	M24	6.5
1 1/2	40	205	44.5	79	48.3	111	73	7	146	6.4	4	1 1/8	180	1 1/4	M30	13
2	50	235	50.8	95	60.3	127	92.1	7	171.4	6.4	8	1	185	1 1/8	M27	19
2 1/2	65	265	57.2	114	73	143	104.8	7	196.8	6.4	8	1 1/8	205	1 1/4	M30	24
3	80	305	66.7	133	88.9	168	127	7	228.6	9.5	8	1 1/4	230	1 3/8	M33	43
4	100	355	76.2	165	114.3	190	157.2	7	273	12.7	8	1 1/2	260	1 5/8	M39	66
6	150	485	108	235	168.3	273	215.9	7	368.3	12.7	8	2	350	2 1/8	M52	172
8	200	550	127	305	219.1	318	269.9	7	438.2	12.7	12	2	385	2 1/8	M52	261
10	250	675	165.1	375	273	419	323.8	7	539.8	12.7	12	2 1/2	490	2 5/8	M64	485
12	300	760	184.2	441	323.8	464	381	7	619.1	12.7	12	2 3/4	540	2 7/8	M72	730

Orifice Flange Drawing

ASTM A105 Orifice Flange Assembly

ASME B16.36 Orifice Flange Test Certificates

100% Radiography Test Report
Raw Materials Certificate
Third Party Inspection Repor
EN 10204/3.1B,

Orifice Plate Application

Specialty Chemicals
Power Generation
Condensers
Chemical Equipment
Gas Processing
Pulp and Paper Industry
Sea Water Equipment

Pharmaceutical Equipment
Off-Shore Oil Drilling Companies
Petrochemicals
Heat Exchangers
Pharmaceuticals

Check Weight Chart of ASTM A105 Orifice Plate Flange, and Assembly Types Of A350 LF2 Eccentric Orifice Plate As per DIN 19214

Stainless Steel Orifice Flange Weight Chart

SIZEIN MM	SIZEIN INCH	CLASS 300
25	1	4.5
40	1 1/2	6.5
50	2	7
65	2 1/2	7.5
80	3	9.4
100	4	13.2
150	6	14.6
200	8	30
250	10	41
300	12	62
350	14	84
400	16	111
450	18	138
500	20	171
600	24	247

Orifice Flange Pressure Rating

Service Temp (°F)	150	300
Service Temp (°F)	ASTM A182 F304	ASTM A182 F316
100	275	720
200	235	610
300	210	545
400	190	495
500	170	460
600	140	435
650	125	430
700	110	420
750	95	415
800	80	415
850	65	410
900	50	405
950	35	385
1000	-	-

ASME B16.36 Orifice Flange Value Added Services

Chemical Analysis – Spectro Analysis
Intergranular Corrosion (IGC) Test
Hardness Test
Chemical Equipment
Pitting Resistance Test

Positive Material Identification – PMI Testing
Micro and MacroTest
Flattening Test
Mechanical Testing Such as Tensile of Area

SS Orifice Flange Manufacturer in India offers large size A516 Gr.70 Concentric Orifice Plate Wall Thickness & Bolt Size

Wall Thickness Of Orifice Plate

Normal Size Of Steel Pipe	Outer Diameter (O.D.)	20 Schedule	30 Schedule	60 Schedule
½	0.84	-	-	-
¾	1.05	-	-	-
1	1.315	-	-	-
1 ¼	1.66	-	-	-
1 ½	1.9	-	-	-
2	2.375	-	-	-
2 ½	2.875	-	-	-
3	3.5	-	-	-
3 ½	4	-	-	-
4	4.5	-	-	-
5	5.563	-	-	-
6	6.625	-	-	-
8	8.625	0.25	0.277	0.406
10	10.75	0.25	0.307	0.5
12	12.75	0.25	0.33	0.562
14	14	0.312	0.375	0.594

ASME B16.36 Orifice Flange Documentation

Raw Material Test Reports
Fumigation Certificates
Fumigation Certificates
Guarantee Letter

QAP (Quality Assurance Plan)
NABL approved Laboratory Test Reports
Heat Treatment Charts
Commercial Invoice which includes HS Code

Hs Code Of Stainless Steel Orifice Flange

HS Code	Destination
73079990	Stainless Steel Orifice Flange

Class 300 Orifice Flange Bolt Size

NPS	B.C.	Diameter Of Stud Bolt	Holes Diameter	Bolts Number	Stub Bolt Length
1	88.9	5/8	11/16	4	125
1½	114.3	3/4	13/16	4	135
2	127.0	5/8	11/16	8	125
2½	149.2	3/4	13/16	8	135
3	168.3	3/4	13/16	8	135
4	200.0	3/4	13/16	8	135
6	269.9	3/4	7/8	12	135
8	330.2	7/8	1	12	145
10	387.4	1	1.1/8	16	165
12	450.8	1.1/8	1¼	16	180
14	514.4	1.1/8	1¼	20	185
16	571.5	1¼	1.3/8	20	195
18	628.6	1¼	1.3/8	24	205
20	685.8	1¼	1.3/8	24	215
24	812.8	1½	1.5/8	24	240

Class 600 Orifice Flange Bolt Chart

NPS	B.C.	Diameter Of Stud Bolt	Holes Diameter	Bolts Number	Stub Bolt Length
1	88.9	5/8	11/16	4	125
1½	114.3	3/4	13/16	4	135
2	127.0	5/8	11/16	8	125
2½	149.2	3/4	13/16	8	135
3	168.3	3/4	13/16	8	135
4	215.9	7/8	1	8	150
6	292.1	1	1.1/8	12	180
8	349.2	1.1/8	1¼	12	195
10	431.8	1¼	1.3/8	16	220
12	489.0	1¼	1.3/8	20	230
14	527.0	1.3/8	1½	20	240
16	603.2	1½	1.5/8	20	260
18	654.0	1.5/8	1¾	20	280
20	723.9	1.5/8	1¾	24	300
24	838.2	1.7/8	2	24	335

Class 900 Orifice Flange Bolt Size

NPS	B.C.	Diameter Of Stud Bolt	Holes Diameter	Bolts Number	Stub Bolt Length
1	88.9	5/8	11/16	4	125
1½	114.3	3/4	13/16	4	135
2	127.0	5/8	11/16	8	125
2½	149.2	3/4	13/16	8	135
3	190.5	7/8	1	8	150
4	235.0	1.1/8	1¼	8	180
6	317.5	1.1/8	1¼	12	195
8	393.7	1.3/8	1½	12	230
10	469.9	1.3/8	1½	16	240
12	533.4	1.3/8	1½	20	260
14	558.8	1½	1.5/8	20	280
16	616.0	1.5/8	1¾	20	290
18	685.8	1.7/8	2	20	330
20	749.3	2	2.1/8	20	355
24	901.7	2½	2 5/8	20	445

Class 1500 Orifice Flange Bolt Chart

NPS	B.C.	Diameter Of Stud Bolt	Holes Diameter	Bolts Number	Stub Bolt Length
1	101.6	7/8	1	4	150
1½	123.8	1	1.1/8	4	160
2	165.1	7/8	1	8	150
2½	190.5	1	1.1/8	8	165
3	203.2	1.1/8	1¼	8	185
4	241.3	1¼	1.3/8	8	205
6	317.5	1.3/8	1½	12	265
8	393.7	1.5/8	1¾	12	300
10	482.6	1.7/8	2	12	345
12	571.6	2	2.1/8	16	380
14	635.0	2¼	2 3/8	16	415
16	704.8	2½	2 5/8	16	450
18	774.7	2¾	2 7/8	16	500
20	831.8	3	3.1/8	16	545
24	990.6	3½	3.5/8	16	620

Class 2500 Orifice Flange Bolt Size

NPS	B.C.	Diameter Of Stud Bolt	Holes Diameter	Bolts Number	Stub Bolt Length
1	108.0	7/8	1	4	150
1½	146.0	1.1/8	1¼	4	180
2	171.4	1	1.1/8	8	185
2½	196.8	1.1/8	1¼	8	205
3	228.6	1¼	1.3/8	8	230
4	273.0	1½	1.5/8	8	260
6	368.3	2	2.1/8	8	350
8	438.2	2	2.1/8	12	385
10	539.8	2½	2 5/8	12	490
12	619.1	2¾	2 7/8	12	540

Orifice Flange Gasket Types

Composite	Metallic – Ring Gasket	Non-Metallic
Camprofile Gaskets	Octagonal Ring Gasket	PTFE Gasket
Spiral Wound Gaskets	Oval Ring Gasket	Compressed Non-Asbestos Fibre Gasket (CNAF)
Metal Jacketed Gasket		Rubber Gasket

ASME B16.36 Orifice Flange Tolerances

ASME B16.36 Tolerances
D1 & D2 = ± 1%	D3 = ± 1 (millimeter)	D4 = 0/-0.4 (millimeter)	L = ± 0.1 (millimeter)	P = ± 0.1 (millimeter)	S = ± 0.1 (millimeter)