PROVIDING DUPLEX AND SUPER DUPLEX STEEL PRODUCTS SINCE 1975

Our company Duplex Steel & Alloys trades and supplies the best quality Stainless Steel 304 Flanges in the domestic and international markets. We have modern machines and tools along with a committed workforce that helps to produce high-quality flanges.

The most common stainless steel product is 304L Stainless Steel Flange, which contains 18-20% Cr and 8-10.5% Ni. SS 304 is non-magnetic when annealed and cold processing techniques such as stamping, stretching, bending, and rolling can transform a part of the alloy's austenite structure into martensite, making it mildly magnetic. Air corrosion and oxidation are not a problem for SS 304 flange.

Stainless Steel 304L Flanges, SS 304 Flange, Stainless Steel 304 Flange, 304 Stainless Steel Flange, SS 304 Flange Price List, Stainless Steel 304 Flange Suppliers in Mumbai, India.

SS 304 Flange Dimensions, ASTM A182 F304 Stainless Steel Flanges, Flange SS 304, SS 304 Slip On Flange, 304 SS Flange, 304L Stainless Steel Pipe Flange, SS 304H Blind Flange, SS 304 Spectacle Blind Flange, SS 304 Flange HSN Code, Stainless Steel 304L Flange Manufacturers in India.

Stainless Steel 304 Flanges

Stainless Steel 304L Flanges are a lower carbon variation of SS 304 flanges, which has good oxidation resistance even at an elevated temperature of 899°C. When used continuously in high temperatures it doesn't scale considerably. Due to lower carbon in the composition, SS 304L can be used in harsh corrosive applications in an as-weld state without the need for annealing. If the application is for indicating stress relief then this alloy is not recommended. It can be welded using various standard methods.

Type 304H Stainless Steel Flanges are a higher carbon variation of 304 Stainless Steel flanges with increased strength at higher temperatures. These flanges are commonly used in structural and pressure-containing applications. Using standard fusion welding processes, the alloy may be readily welded with or without filler materials. SS 304H has stronger short and long-term creep strength and is more resistant to sensitization than SS 304L at temperatures over 500 ° C. Because of the grade's heat resistance, it is approved for use in ASME pressure vessels in operating service over 525° C.

Due to the popularity and usage of flanges in various industries, Duplex Steel & Alloys produces these stainless steel 304, 304L, and 304H Flanges in various types and sizes, customized to suit the application.


SS 304 Flanges Specification

Standard ASTM A182 / ASME SA182
Dimensions ANSI/ASME B16.5, B16.47 Series A & B, B16.48, BS4504, BS 10, EN-1092, DIN, ANSI Flanges, ASME Flanges, BS Flanges, DIN Flanges, EN Flanges, GOST Flange, ASME/ANSI B16.5/16.36/16.47A/16.47B, MSS S44, ISO70051, JISB2220, BS1560-3.1, API7S-15, API7S-43, API605, EN1092
Flange Size Chart 1/2" (15 NB) to 48" (1200NB), DN10~DN5000
Pressure Rating Class 150 LBS, 300 LBS, 600 LBS, 900 LBS, 1500 LBS, 2500 LBS
Pressure Calculation in DIN 6Bar 10Bar 16Bar 25Bar 40Bar / PN6 PN10 PN16 PN25 PN40, PN64
JIS 16 K, 5K, 10 K, 20 K, 30 K, 40 K, 63 K
Flange Connection / Flange Face Type Raised Face (RF), Ring Type Joint (RTJ), Flat Face (FF), Large Male-Female (LMF), Lap-Joint Face (LJF), Small Male-Female (SMF), Small Tongue, Large Tongue & Groove, Groove, Flange Pipe.
Origin West Europe / Japan / Indian / USA / Korean
Types of Flanges Threaded / Screwed / Forged / Plate
Coating Yellow Transparent, Zinc Plated, Anti-rust Paint, Oil Black Paint, Cold and Hot Dip Galvanized
Test Of Flange Direct-reading Spectrograph, Ultrasonic flaw detector, Magnetic particle detector, X-ray detector, Hydrostatic testing machine.
Production technique Used Heat treated, Forged and Machined
Equipment Press machine, Bending machine, Pushing Machine, Sand-blasting machine, electric bevelling machine etc.
Test Certificates EN 10204/3.1B, Raw Materials Certificate, 100% Radiography Test Report, Third Party Inspection Report, etc

Types of Stainless Steel 304 Flanges

SORF Flange

304 SS Slip On Flange

Plate Flanges

SS 304 Plate Flanges

Weld Neck Flange

304 SS Welding Neck Flange

Blind Flange

304L SS Blind Flange

Spectacle Blind Flange

304 SS Spectacle Blind Flange

Socket Weld Flange

304H Stainless Steel Socket Weld Flange

Threaded Flange

ASTM A182 304H SS Threaded Flange

Lap Joint Flange

304H Stainless Steel Lap Joint Flange

Ring Type Joint Flange

UNS S30400 Stainless Steel RTJ Flange

Long Weld Neck Flange

304 SS Long Weld Neck Flange

Tongue and Groove Flange

SS 304 Tongue and Groove Flange

Orifice Flange

304L Stainless Steel Orifice Flange

304H Stainless Steel Flange Equivalent Material

STANDARD WERKSTOFF NR. UNS JIS BS GOST AFNOR EN
SS 304 1.4301 S30400 SUS 304 304S31 08Х18Н10 Z7CN18‐09 X5CrNi18-10
SS 304L 1.4306 / 1.4307 S30403 SUS 304L 3304S11 03Х18Н11 Z3CN18‐10 X2CrNi18-9 / X2CrNi19-11
SS 304H 1.4948 S30409 SUS 304H

SS 304 Flanges Chemical Composition

Grade C Mn Si P S Cr Mo Ni N
SS 304 0.08 max 2 max 0.75 max 0.045 max 0.030 max 18 – 20 8 – 11
SS 304L 0.035 max 2.0 max 1.0 max 0.045 max 0.03 max 18 – 20 8 – 13
SS 304H 0.10 max 2.0 max 0.75 max 0.045 max 0.03 max 18 – 20 8 – 10.5

SS 304L Flange Mechanical Properties

Density Melting Point Tensile Strength Yield Strength (0.2%Offset) Elongation
8.0 g/cm3 1400 °C (2550 °F) Psi – 75000 , MPa – 515 Psi – 30000 , MPa – 205 35 %

304L Stainless Steel Flange, 304 Stainless Steel SORF Flange, Stainless Steel 304L Flange Supplier, Stainless Steel 304H Flange, Stainless Steel 304 Flanges, ASME B16.5 Stainless Steel 304 Flanges, Stainless Steel 304 Flange Supplier, SS 304L Flange, SS 304 Flanges Suppliers in Mumbai.

If you are looking for best prices for 304 Stainless Steel Flanges, 304 Stainless Steel Flange, 304 Grade Stainless Steel Flange email us on info@duplexsteelalloys.com or call us on +91 9664408767

SS 304 Flange Price List

Product Price
304H Stainless Steel Slange Price List US $8.72-21.57 / Piece
304 Stainless Steel Slip on Flange Price US $13.58-30.23 / Piece
Stainless Steel 304 Weld Neck Flange Price List US $8.72-13.58 / Piece
304 Stainless Steel Square Flange Price List S $13.56-28.23 / Piece
304H Stainless Steel Orifice Flange Price US $6.82-21.57 / Piece
SS 304 2 Inch SS Flange Price US $15.58-28.45 / Piece
SS 304L Lapped Flange Price US $15.86-31.33 / Piece
304L SS Threaded Flange Prices US $5.52-19.47 / Piece
304H Stainless Steel Blind Flange Price US $1.2-2.9 / Kilogram
SS 304 Spectacle Blind Flange Price US $2,100.00-3,500.00 / Ton

304 Stainless Steel Flanges Pressure and Temperature Ratings

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

SS 304 Flange Weight Chart

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

SS 304 Flange Dimensions

Normal Pipe Size (NPS) Of Flanges (I.D.) Inside Diameter Thickness Of Raised Face (RF)
(T)
Outside Daimeter (O.D.) Raised Face
(R)
RF
(Raised Face)
Holes Of Bolts
(B)
H T1 Thickness Of Flat Face (FF)
(T2)
BC (Circle Of Bolt) Bolts Holes
Numbers
1/2 0.88 0.88 3.75 1.38 .063 0.62 1.50 0.50 0.82 2.62 4
1 1.36 1.06 4.88 2.00 .063 0.75 2.12 0.63 1.00 3.50 4
3/4 1.09 1.00 4.62 1.69 .063 0.75 1.88 .056 0.94 3.25 4
1-1/4 1.70 1.06 5.25 2.50 .063 0.75 2.50 0.69 1.00 3.88 4
2 2.44 1.31 6.50 3.62 .063 0.75 3.31 0.82 1.25 5.00 8
1-1/2 1.95 1.19 6.12 2.88 .063 0.88 2.75 0.75 1.13 4.50 4
2-1/2 2.94 1.50 7.50 4.12 .063 0.88 3.94 0.94 1.44 5.88 8
3 3.57 1.69 8.25 5.00 .063 0.88 4.62 1.06 1.63 6.62 8
3-1/2 4.07 1.75 9.00 5.50 .063 0.88 5.25 1.13 1.69 7.25 8
4 4.57 1.88 10.00 6.19 .063 0.88 5.75 1.19 1.82 7.88 8
5 5.66 2.00 11.00 7.31 .063 0.88 7.00 1.32 1.94 9.25 8
18 18.18 3.50 28.00 21.00 .063 1.38 21.00 2.32 3.44 24.75 24
6 6.72 2.06 12.50 8.50 .063 0.88 8.12 1.38 2.00 10.62 12
8 8.72 2.44 15.00 10.62 .063 1.00 10.25 1.56 2.38 13.00 12
10 10.88 2.62 17.50 12.75 .063 1.12 12.62 1.82 2.56 15.25 16
12 12.88 2.88 20.50 15.00 .063 1.25 14.75 1.94 2.82 17.75 16
14 14.14 3.00 23.00 16.25 .063 1.25 16.75 2.06 2.94 20.25 20
20 20.20 3.75 30.50 23.00 .063 1.38 23.12 2.44 3.69 27.00 24
16 16.16 3.25 25.50 18.50 .063 1.38 19.00 2.19 3.19 22.50 20
22 22.22 4.00 33.00 25.25 .063 1.63 25.25 2.57 3.94 29.25 24
24 24.25 4.19 36.00 27.25 .063 1.62 27.62 2.69 4.13 32.00 24

Dimensions Tolerances Of Stainless Steel 304 Plate Flange

Flange Tolerance Table
D Inside Diameter (I.D.)
  • 10" and smaller: ±1/32" (0.8 mm)
  • 12" thru 18": +1/8" (3.2 mm)
  • 20" and larger: -1/16" (1.6 mm)
K Length of hub
  • 10" and smaller: ±1/16" (1.6 mm)
  • 12" and larger: ±1/8" (3.2 mm)
B Diameter of contact face
  • 1/16" raised face: ±1/32" (0.8 mm)
  • 1/4" RF (Raised Face), T/G (Tongue & Groove), (male & female), (m/f): ±1/64" (0.4 millimeter)
A O.D. (Outside Diameter)
  • When O.D. (Outside Diameter) is 24" or less: ±1/16" (1.6 millimeter)
  • When O.D. (Outside Diameter) is over 24": ±1/8" (3.2 millimeter)
J Diameter of hub at base
  • When hub base is 24" or smaller: ±1/16" (1.6 millimeter)
  • When hub base is over 24": ±1/8" (3.2 millimeter)
P Drilling
  • Circle Bolts: ±1/16" (1.6 mm)
  • Bolts hole spacing: ±1/32" (0.8 mm)
Eccentricity of bolt circle with respect to facing
  • 2 1/2" and smaller ±1/32" (0.8 mm) maximum
  • 3" and larger ±1/16" (1.6 mm) maximum
H Diameter of hub at point of welding
  • 5" and smaller: +3/32" (2.4 mm), -1/32" (0.8 mm)
  • 6" and larger: +5/32" (4.0 mm), -1/32 (0.8 mm)
C Thickness
  • 18" and smaller: ±1/8" (3.2 mm), -0"
  • 20" and larger: ±3/16" (4.8 mm), -0"

Ask Free Sample of SS 304 Flange, SORF Flanges, WNRF Flange, SWRF Flange, BLRF Flange, RTJ Flange Please Call +91 9664408767

Widest Range of Stainless Steel 304 Flange in Mumbai, India.

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Inspection & Testing of 304 Stainless Steel Pipe Flange

Before being prepared for shipment to the customer, ASTM A182 304 Stainless Steel Flanges Testing should be constructed in accordance with applicable standards and thoroughly tested for potential flaws.

Direct-reading Spectrograph

Direct-Reading Spectrograph

UI trasonic flaw detector

UI Trasonic Flaw Detector

Hydrostatic testing machine

Hydrostatic Testing Machine

X-ray detector

X-ray Detector

Magnetic particle detector

Magnetic Particle Detector

Flattening Test

Flattening Test

PMI Testing

PMI Testing

Hardness Test

Hardness Test

Pitting Resistance Test

Pitting Resistance Test

Hydrostatic test pressure of Stainless Steel 304H Flanges

ASTM
Specification
Class
150 300 400 600 900 1500 2500
A182-F304
A182-F304L
A182-F304H
425 1100 1450 2175 3250 5400 9000

Stainless Steel 304L Flange - Comparing International Standards

USA France Germany Germany Italy Japan Russia Spain Sweden UK European Union
AISI AFNOR DIN 17006 W.N. 17007 UNI JIS GOST UNE SIS BSI EURONORM
304 Z 6 CN 18-09 X 5 CrNi 18 10 X 5 CrNi 18 12 1.4301 X 5 CrNi 1810 SUS 304 08KH18N10 06KH18N11 X 6 CrNi 19-10 23 32 304S15 304S16 X 6 CrNi 18 10
304L Z 2 CN 18-10 X 2 CrNi 18 11 1.4306 X 2 CrNi 1911 SUS 304L 03KH18N11 X 2 CrNi 19-10 23 52 304S11 X 3 CrNi 18 10
304H  - - 1.4948 X 8 CrNi 1910 SUS F 304H - X 6 CrNi 19-10 - - -
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304 Stainless Steel Flanges Supply in Below Countries

Products We Supplied Description Country
ASME SA182 SS 304H Long Weld Neck Flange Weight 1.4948 2500 LBS LWN Flange Dimensions Portugal, New Zealand, Belgium, Taiwan
SS GOST 08Х18Н10 Plate Flanges 304 SS Loose Flanges Czech Republic, Chile, Jordan, Nigeria, Ecuador
304L Stainless Steel Forged Flanges UNS S30403 Forged Flanges Bulgaria, Nepal, Bhutan, Kuwait
ASTM A182 F304 Slip On Flange Welding 600 LBS SA182 Gr F304 SORF Flanges Belarus, Azerbaijan, South Africa, Gambia, Oman
Stainless Steel 304 Raised Face Weld Neck Flange 1.4301 Welding Neck Flange Yemen, Slovakia, Puerto Rico, Romania, Mongolia
304H SS Socket Weld Flange ANSI B16.47 SS 1.4948 Socket Weld Flange Dimensions Hong Kong, Switzerland, Singapore, Australia
304L Stainless Steel End Blind Flange BS 10 Table F SS 304L Blind Flange Connection Estonia, Denmark, Vietnam, Hungary
Stainless Steel 304L Raised Face Slip On Flange UNS S30400 Flat Face Slip On Flange Serbia, Malaysia, Germany, Venezuela

Common Application for 304L Stainless Steel Flanges

Heavy Equipment

Heavy Equipment

Automotive

Automotive

Power Generation

Power Generation

Construction

Construction

Chemical Processing

Chemical

Oil & Gas

Oil & Gas

Shipbuilding

Shipbuilding

Aerospace

Aerospace