Stainless Steel Flanges Manufacturer in India

How can buyers ensure that they are purchasing high-quality stainless steel flanges?

Request material test reports to verify the grade and composition.
Purchase from reputable Stainless Steel Flanges manufacturer in India like Vishal Steel, who is known for delivering quality products.
Ensure the Stainless flanges meet relevant industry standards.
Inspect the flanges for any surface defects, cracks, etc.
Consider third party inspection to validate the quality of the stainless steel stub end flanges.

What is the difference between schedule and wall thickness in stainless steel forged flanges?

The schedule is the nominal pipe size and thickness of the flange hub. It is used to standardize the dimensions of the stainless steel forged flanges to match the corresponding pipe size.

The wall thickness of the forged steel tube flange is measured on the connecting end where the pipe is joined. It should match the wall thickness of the corresponding pipe to ensure a proper and secure fit.

What is the relation between the thickness and sizes of the SS flange?

The thickness of the SS pipe flange is related to the nominal pipe size and the pressure class or schedule of the flange. The thickness of the hub matches the wall thickness of the corresponding pipe to ensure a proper fit and secure connection. The larger the nominal pipe size, the thicker will be the flange hub to handle higher pressure.

What is the different between RTJ and RF face types of SS pipe flange?

RTJ stainless pipe flanges have grooves on the face that accommodate metal ring gaskets. It offers a more robust and reliable seal which is suitable for high pressure and temperature applications.
RF SS puddle flange has a raised flat face that allows a simple gasket. They are suitable for low to moderate pressure and temperature applications.

Table Of Content:

Stainless Steel Flange specification
SS Flange Price List
Stainless Flange Suitable Environment
Stainless Steel Flange Wall Thickness
Stainless Steel Flange Size Chart
Stainless Flanges Grades
Type of SS Flange
Available Types Of SS Pipe Flanges
Forged SS Flanges Finish Types
SS Pipe Flange Manufacturing Method
Stainless Steel Flange Stainless Flange
Most Common Standards Of SS Pipe Flanges
ANSI Class 150 Stainless Steel Flange Pressure Rating
Class 300 Stainless Steel Flange Pressure Rating
Class 600 Stainless Steel Flange Pressure Rating

Refer Stainless Steel Forged Flanges Specification as per ASTM A182

Stainless Steel Flange Specification

Most Selling Size :

NPS: ½” to 48″
15NB – 1500NB
PN 2.5 – PN 400

Temperature Of Melting :

1400 To 1530 °C

Benefits :

Impact resistance
Sustainability
Corrosion Resistance
Long Term Value

Schedule :

SCH 10/ 20/ 40
SCH 60/ 80/ 100
SCH 120/ 140
SCH 160/ 180

Pressure :

Class 125, 150
Class 300, 400
Class 600, 900
Class 1500, 2500

Standard :

ASME B16.5
ASME B16.36
ASME B16.47
ASME B16.48

Manufacturing Method :

Cast
Plate
Forged

Forging Temperature :

1700 and 2300°F

No. Of Bolts Hole :

4 To 48

Supporting Material :

Ring Joint
Nuts
Gaskets
Bolts

Threads :

BSPP (Male & female)
MNPT (Male)
MPT/ BSPT (Female)
NPT/ BSP/ FPT

Surface Finish :

Smooth finish
Concentric serrated
Cold water finish
Spiral serrated

Faces Method :

M&F face (Male & female)
RF face (Raised)
RTJ face (Ring type joint)
FF face (Plain or flat)
T&G face (Tongue & groove)

Installations :

Sea water exchanger
Petrochemical plants
Nuclear energy sector

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
Bahrain = 9 to 10 days
Qatar = 7 day

Services :

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

Low Thermal Conductivity :

15 W/(mK)

Elasticity Modulus :

342 – 45000 KSI
2.36 – 310 GPa

Electrical Resistivity :

0.0000720 ohm-cm

Types Of Connection :

Threaded
Welding

Available Material:

Carbon steel
Nickel alloy
Titanium
Copper nickel
Alloy steel
Stainless steel

Testing :

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

For More Information Please Contact US

Manufacturer of SS Flange For Petrochemical Plants in India, Check Price List & Suitable Environment

SS Flange Price List

Standard = ASME B16.5
Grade = 304
Class = 150
Face = RTJ/RF/FF
SCH = 40S

Size	Price In Dirham (AED) per unit	Price In US$ (Dollar) per unit
1.1/2”	112.76	US $30.70
1.1/4”	90.80	US $24.72
1”	73.83	US $20.10
2”	149.20	US $40.62
3.1/2”	293.10	US $79.80
3”	308.94	US $84.11
4”	495.45	US $134.89
5”	570.56	US $155.34
6”	652.80	US $177.73
8”	748.96	US $203.91
10”	1123.02	US $305.75
12”	1685.94	US $459.01
14”	2185.98	US $595.15
16”	2491.90	US $678.44
18”	3247.84	US $884.25
20”	4221.00	US $1149.20

Stainless Flange Suitable Environment

Environment	Suitable Grades
Caustic Soda	SS 304/ 304L, 316/ 316L
Corrosion-resistant service	316L
Chlorine, hydrochloric acid and hydrogen chlorine	SS 304L, 316L
Organic acids	304L, 316L, 317L, 904L
Corrosion-resistant service	316L

SS Flange Thickness Chart

SCH 10	SCH 20
SCH 30	STD Wall
SCH 40	SCH 60
EXT Hvy	SCH 80
XX Hvy	–
SCH 140	SCH 160
SCH 100	SCH 120

Stainless Steel Flange Size Chart

Size	Pressure Class	International Standard
1/2″ To 48″	150 lb to 2500 lb	Australian flange
1/2″ To 80″	150 lb to 300 lb	Korean flange
3/8 to 60″	150 lb to 2500 lb	Japanese standard flange
1/2″ To 48″	PN6 To PN40	DIN flange
3/8″ to 80″	PN 2.5 to PN 400	EN 1092-1/2
26″ To 48″	150 lb to 600 lb	BS 3293
22″ To 48″	150 lb to 900 lb	MSS SP 44
4″ To 144″	Class B/D/E/F	Awwa C207
2 1/2″ To 24″	–	ISO flange
1/4″ to 24″	150 lb to 2500 lb	ASME B16.5
1/4″ to 24″	300 lb to 2500 lb	ASME B16.36
26″ to 60″	150 lb to 900 lb	ASME B16.47
1/4″ to 24″	150 lb to 2500 lb	ASME B16.48

Stainless Flanges Grades

Stainless Steel 304 Flanges

Stainless Steel 304L Flanges

Stainless Steel 304H Flanges

Stainless Steel 310 Flanges

Stainless Steel 316 Flanges

Stainless Steel 316L Flanges

Stainless Steel 321 Flanges

Stainless Steel 347 Flanges

Stainless Steel 410 Flanges

Type Of SS Flange

Stainless Steel Slip On Flange

Stainless Steel Weld Neck Flange

Stainless Steel Blind Flange

Stainless Steel Plate Flange

Stainless Steel Orifice Flange

RTJ Flange

Stainless Steel Reducing Flange

Stainless Steel Spectacle Blind Flanges

Stainless Steel Threaded Flange

Stainless Steel Socket Weld Flange

Does the density of the stainless steel pipe flange change with temperature?

Yes, the density of SS pipe flanges can change with temperature. As temperature increases, steel flanges tends to expand which causes a decrease in density and vice versa.

Available Types Of SS Pipe Flanges

Steel Flange

Pressure Class
Class 150 To 300
600LBS To 900LBS
1500# To 2500#

Stainless Flange

Type Of Flanges :
Weld neck/ slip-on
Socket weld/ threaded
Lap joint/ blind

Stainless Pipe Flanges

Wall Thickness:
Schedule 10/ 20/ 40
SCH 60/ 80/ 100
Schedule 120/ 140 / 180

SS Floor Flange

Manufacturing Process :
Castings
Forgings
Plates

Steel Tank Flange

Dimensions
ASME B16.5
ASME B16.47
ANSI B16.5

Forged Stainless Steel Flanges

Face Type :
Ring type joint
Flat face
Raised face

Flange SS

Marking :
Pressure class/ NPS/ material
Flange facing/ schedule
Manufacturer logo

SS Threaded Flange

Production Process :
Casting
Forging
Rolling/ cutting

Stainless Steels Forged Flanges

Sizes :
1/2" to 24" Inch
12.7 to 609.6 MM
DN15 To DN1200

SS Van Stone Flange

EN Standard :
6Bar/ 10Bar
16Bar/ 25Bar
40Bar

Forged Stainless Flanges

Supporting Material :
Gasket
Ring joint
Flange bolts

SS Pipe Flange manufacturer in India Offers 2 Inch, 4 Inch Tube Flange At Factory Price In Mumbai, ASTM A182 Flanges available in various face such as RF, RTJ, FF according to EN 1092-1

Forged SS Flanges Finish Types

Types Of Finish	Finish Value	Diagram
Smootd Finish	63-125 AA
Concentric Serrated	125 and 500 micro inches
Stock Finish	125- to 250-μin
Spiral Serrated	Generated using a 90-deg tool
Serrated Finish	Required 30 to 55 grooves per inches

Looking For Large Diameter Stainless Steel Flanges? Buy Directly From Ss Flange Manufacturer In Mumbai, We Produce Class 150-2500 Stainless Pipe Flanges In Plate, Forging And Casting Methods.

SS Pipe Flange Manufacturing Method

Standard	Manufacturing Technique	Forging
ASTM A341 & MSS SP-51	Cast
ASME/ANSI B16.5	Forged
ASME/ANSI B16.5	125- to 250-μin

Stainless Steel Flange Stainless Flange

Temperature In °C	Material & Grade	Temperature In °F
1399 °C – 1454 °C	ASTM A182 F304	2,550 °F – 2,650 °F
1,371 °C – 1,399 °C	ASTM A182 F304L	2,500 °F – 2,550 °F
1,371 °C – 1,399 °C	ASTM A182 F316	2,500 °F – 2,550 °F
1040 to 1175° C	ASTM A182 F316L	1900 to 2150° F

Most Common Standards Of SS Pipe Flanges

ASME B16.47 Series A	ASME B16.47 Series B	ASME B16.5	ASME B16.48	ASME B16.36
150# 300# 600# 900# 1500# 2500#	75 PSI 150 PSI 300 PSI 400 PSI 600 PSI 900 PSI 1500 PSI 2500 PS	Class 150 Class 300 Class 600 Class 900 Class 1500 Class 2500	300 LB 600 LB 900 LB 1500 LB 2500 LB	CL 300 CL 400 CL 600 CL 900 CL 1500 CL 2500

Supplier of Stainless Steel Pipe Flange in Plate ASTM A240 (Forging) or ASTM A351 (Casting) as per ANSI/ ASME B16.5 Specification, Check Pressure Rating & Weight

ANSI Class 150 Stainless Steel Flange Pressure Rating

Temp. °F	Class 150
-20~100	275
200	230
300	205
400	190
500	170
600	140
700	110
800	80
900	50
1000	20
1100	-
1200	-
1300	-
1400	-
1500	-

Class 300 Stainless Steel Flange Pressure Rating

Temp. °F	Class 300
-20~100	720
200	600
300	540
400	495
500	465
600	440
700	420
800	405
900	390
1000	355
1100	255
1200	165
1300	115
1400	75
1500	40

Class 600 Stainless Steel Flange Pressure Rating

Temp. °F	Class 600
-20~100	1,440
200	1,200
300	1,075
400	995
500	930
600	885
700	845
800	810
900	780
1000	710
1100	515
1200	330
1300	225
1400	150
1500	85

Class 900 SS Flange Pressure Rating Chart

Temp. °F	Class 900
-20~100	2,160
200	1,800
300	1,615
400	1,490
500	1,395
600	1,325
700	1,265
800	1,215
900	1,165
1000	1,065
1100	770
1200	495
1300	340
1400	225
1500	125

Class 1500 Stainless Steel Flange Pressure Rating

Temp. °F	Class 1500
-20~100	3,600
200	3,000
300	2,690
400	2,485
500	2,330
600	2,210
700	2,110
800	2,030
900	1,945
1000	1,770
1100	1,285
1200	825
1300	565
1400	380
1500	205

Class 2500 SS Flange Pressure Rating

Temp. °F	Class 2500
-20~100	6,000
200	5,000
300	4,480
400	4,140
500	3,880
600	3,680
700	3,520
800	3,380
900	3,240
1000	2,950
1100	2,145
1200	1,370
1300	945
1400	630
1500	345

SS Weld Neck Flanges Weight

Nominal Size Of Pipe (NPS)	Weld Neck(WNRF)
½	2
¾	2
1	3
1¼	3
1½	4
2	6
2½	10
3	11.5
3½	12
4	16.5
5	21
6	26
8	42
10	54
12	88
14	114
16	140
18	165
20	197
22	225
24	268

Stainless Steel Slip On Flanges Weight Chart

Nominal Size Of Pipe (NPS)	Slip On(SORF)
½	1
¾	2
1	2
1¼	3
1½	3
2	5
2½	8
3	9
3½	11
4	13
5	15
6	19
8	30
10	43
12	64
14	90
16	106
18	130
20	165
22	185
24	220

Stainless Steel Blind Flanges Weight Chart

Nominal Size Of Pipe (NPS)	Blind(BLRF)
½	2
¾	2
1	2
1¼	3
1½	4
2	5
2½	7
3	9
3½	13
4	17
5	20
6	27
8	47
10	70
12	123
14	140
16	180
18	220
20	285
22	355
24	430

SS Socket Weld Weight Chart

Nominal Size Of Pipe (NPS)	Socket Weld(SWRF)
½	2
¾	2
1	2
1¼	3
1½	3
2	5
2½	8
3	9
3½	11
4	13
5	15
6	19
8	30
10	43
12	64
14	90
16	98
18	130
20	165
22	185
24	220

Stainless Steel PN16 Flange Dimensions

Flanges Size MM	Thickness inches	Outer Diameter (O.D.) inches	Inner Diameter (I.D.) inches	Weight Kilogram
200	1.020	13.39	8.72	9.5
250	1.140	15.94	10.88	14.1
300	1.260	18.11	12.88	19.4
350	1.380	20.47	14.19	28.3
400	1.500	22.83	16.19	36.5
450	1.650	25.20	18.19	50.1
500	1.810	28.15	20.19	64.2
600	2.050	33.07	24.19	96.9

Stainless Steel Flanges Gaskets Types

PTFE Gasket
Oval Ring Gasket
Spiral Wound Gaskets
Metal Jacketed Gasket
RTJ Gaskets
RF Gaskets
FF Gaskets

Table E Stainless Steel Flange Dimensions

(NBS)	(D)	(K)	(L)	(A)	(C)	(B)	(H1)	(H2)	(R1)
15	95.3	66.8	14.5	21.3	6.4	22.4	9.5	22.2	6.4
20	101.6	73.2	14.5	26.7	6.4	27.7	11.1	22.2	6.4
1"	25	114.3	82.6	14.5	33.5	47.6	34.6	11.1	22.2
1 ¼"	32	120.7	87.4	14.5	42.2	55.6	43.2	11.1	25.4
1 ½"	40	133.4	98.6	14.5	48.3	61.9	49.5	12.7	28.6
2"	50	152.4	114.3	17.5	60.5	74.6	62.0	12.7	28.6
2 ½"	65	165.1	127.0	17.5	73.2	90.5	74.7	15.9	31.8
3"	80	184.2	146.1	17.5	88.9	106.4	90.7	15.9	34.9
3 ½"	88	203.2	165.1	17.5	101.6	119.1	103.4	17.5	34.9
4"	100	215.9	177.8	17.5	114.3	133.4	116.1	19.1	41.3
5"	125	254.0	209.6	17.5	141.2	160.3	143.8	19.1	44.5
6"	150	279.4	235.0	17.5	168.4	185.7	171.7	19.1	47.6
8"	200	336.6	292.1	17.5	219.2	241.3	221.5	22.2	50.8
10"	250	406.4	355.6	22.2	273.1	298.5	276.4	27.0	63.5
12"	300	457.2	406.4	22.2	323.9	349.3	325.9	28.6	69.9
14"	350	527.1	469.9	25.4	355.6	-	359.2	-	73.0

European Standards Of ASTM A182 Flanges

Flanges Types	European Standards
Plate welding flange	EN 1092-1 Type 01
Loose plate flange including TYPE 32 weld-on plate collar	EN 1092-1 Type 02
Loose plate flange including TYPE 33 weld-on plate collar	EN 1092-1 Type 02
Loose plate flange including TYPE 34 weld-neck collar	EN 1092-1 Type 04
Blank and blind flange	EN 1092-1 Type 05
Welding neck flange	EN 1092-1 Type 11
Slip on hubbed flange for welding	EN 1092-1 Type 12
Hubbed threaded (NPT) flange	EN 1092-1 Type 13
long welding-neck – integral flange	EN 1092-1 Type 21

A182 Flange DIN Standard

DIN Threaded Flange	DIN Blind Flange	DIN Plate & DIN Slip On Flange	DIN Weld Neck Flange
DIN 25 DIN 2565 PN6	DIN 2527 PN16 DIN 2527 PN25 DIN 2527 PN40 DIN 2527 PN6 DIN 2527 PN10	DIN 2503 PN25 DIN 2543 PN16 DIN 2573 PN6 DIN 2576 PN10 DIN 2502 PN16	DIN 2633 PN16 DIN 2635 PN40 DIN 2631 PN6 DIN 2634 PN25 DIN 2632 PN10

SS Pipe Flange Class Ratings

ASME B16.5 Piping class ratings based on PN rating
Class	150	300	400	600	900	1500	2500
(PN)	20	50	68	100	150	250	420

DN80 Stainless Steel Flange Dimensions In MM

Class	Diameter in mm	Number of Bolt Holes	Bolts Diameter In Metric	Holes Diameter In MM	(RF) Diameter In MM	(RF) Height In MM
PN6	190	4	M16	18	128	3
PN10	200	8	M16	18	138	3
PN16	200	8	M16	18	138	3
PN25	200	8	M16	18	138	3
PN40	200	8	M16	18	138	3
PN64	215	8	M20	22	138	3
Table D	7 1/4" (184)	4	5/8" (16)	11/16" (17)
Table E	7 1/4" (184)	4	5/8" (16)	11/16" (17)
Table F	8" (203)	8	5/8" (16)	11/16" (17)
Table H	8" (203)	8	5/8" (16)	11/16" (17)	5" (127)	1/16" (2)

Marking On Stainless Steel Flanges

size
item
specification and number
pressure rating, with unit
OD
WT, with unit
bore when applicable
std schedule when applicable,
material specification

6"
FLANGE
RFWN
ASME B16.5 #150
6" OD x 0.250"
152.4 Unit
Bore 15.500"
SCH10S
ASTM A182 F304

Face Types Of Forged Stainless Flanges

Face Types	Marking symbol	Diagram
Male Female Face	M&F
Tongue Groove Face	T & G
Lap Joint Face	LJRF
Ring Type Joint	RTJ
Flat Face	FF
Raised Face	RF

Stainless Steel Flange Thickness

NPS	Outer Diameter (O.D.)	20 Schedule	40 Schedule	80 Schedule	120 Schedule	160 Schedule
½	0.84	...	0.109	0.147	...	0.188
¾	1.05	...	0.113	0.154	...	0.219
1	1.315	...	0.133	0.179	...	0.25
1 ¼	1.66	...	0.14	0.191	...	0.25
1 ½	1.9	...	0.145	0.2	...	0.281
2	2.375	...	0.154	0.218	...	0.344
2 ½	2.875	...	0.203	0.276	...	0.375
3	3.5	-	0.216	0.3	-	0.438
3 ½	4	-	0.226	0.318	-	-
4	4.5	-	0.237	0.337	0.438	0.531
5	5.563	-	0.258	0.375	0.5	0.625
6	6.625	-	0.28	0.432	0.562	0.719
8	8.625	0.25	0.322	0.5	0.719	0.906
10	10.75	0.25	0.365	0.594	0.844	1.125
12	12.75	0.25	0.406	0.688	1	1.312
14	14	0.312	0.438	0.75	1.094	1.406
16	16	0.312	0.5	0.844	1.219	1.594

SS Flange Standard

BS 4504
ASME B16.5
ANSI B16.5
MSS SP-44
EN 1092-2 PN16
DIN
EN 1092-1
AWWA C207
JIS
ISO

Stainless Steel Pipe Flange Sizes

Normal Pipe Size	DN
1/2	15
3/4	20
1	25
1 1/4	32
1 1/2	40
2	50
2 1/2	65
3	80
4	100

Stainless Steel Flange Bolt Torque

Size MM	(Maximum) Radial Projection
Size MM	No Deeper Than the Bottom In Millimeter	Deeper Than the Bottom In Millimeter
15	3.0	1.5
20	3.0	1.5
25	3.0	1.5
32	3.0	1.5
40	3.0	1.5
50	3.0	1.5
65	3.0	1.5
80	4.5	1.5
90	6.0	3.0
100	6.0	3.0
125	6.0	3.0
150	6.0	3.0
200	8.0	4.5
250	8.0	4.5
300	8.0	4.5
350	8.0	4.5
400	10.0	4.5
450	12.0	6.0

SS Flange Bolt Chart

Size	No of Bolts	Machine Bolt Length
15	4	50
20	4	50
25	4	55
32	4	55
40	4	65
50	4	70
65	4	75
80	4	75
90	8	75
100	8	75
125	8	85
150	8	85
200	8	90
250	12	100
300	12	100
350	12	115
400	16	115
450	16	125
500	20	140
600	20	150

What is the purpose of gaskets in ASTM A182 flanges?

The purpose of gaskets in ASTM A182 flanges is to create a reliable and leak proof seal between the mating flange faces. Gaskets are placed between the flange surfaces to fill the imperfections and prevent fluid or gas leakage from the pipeline. They provide a critical sealing element and ensure the integrity of the connection. Gaskets also help to maintain the safety and efficiency of the system, especially in high pressure and temperature applications.

How is the packaging of stainless flanges done by manufacturers?

Stainless flanges are wrapped individually to prevent surface damage during handling.
They are packed in sturdy wooden crates to provide additional protection against impacts and moisture.
Proper labeling with product details and handling instructions ensures easy identification during shipping.

What are the documentation requirements for forged stainless steel flanges?

Certifying through MTR the chemical composition and mechanical properties of the flanges.
Dimensional inspection reports to verify the flange dimensions and tolerances.
Non-destructive testing reports to detect any internal defects in the flange.
Compliance certificates confirm the adherence to forged SS flanges to relevant standards.
A packing list helps to identify the contents and quantities of the shipment.

What are the non-destructive testing methods used for stainless steel weld flanges?

Ultrasonic, radiographic, magnetic particle and liquid penetrant are some of the most common NDT methods used for stainless steel weld flanges.

Flange Forging Companies In India