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Forged Flanges 31803

Home 9 FLANGES 9 DSS 9 FORGED FLANGES 31803
FORGED FLANGES 31803

Forged Flanges 31803,  forged flanges manufacturer in India, forged flanges suppliers in Mumbai, India

Ratna Exports is proud to supply and export high-quality 31803 Forged Flanges, made from Duplex Steel 31803. These flanges are well-regarded in various industries for their outstanding mechanical properties, particularly their excellent strength and resistance to corrosion. As Forged Flanges 31803 are made to withstand high pressure, they are the perfect option for demanding applications in the oil and gas, maritime engineering, and chemical processing industries.

31803 Forged Flanges are manufactured using Duplex Steel 31803, a material known for its balanced composition of austenite and ferrite phases. This unique composition gives the flanges a higher tensile strength compared to standard stainless steel, along with superior resistance to stress corrosion cracking, pitting, and crevice corrosion. These properties make them particularly suitable for use in harsh environments where they are exposed to aggressive chemicals and extreme conditions.

As a leading forged flanges manufacturer, we ensure that our Duplex Steel 31803 Forged Flanges meet the highest standards of quality and durability. The flanges are carefully forged, heat-treated, and machined to achieve precise dimensions and ensure optimal performance in various industrial applications. Additionally, our flanges offer excellent weldability, allowing for secure and leak-proof connections in piping systems.

Our 31803 Forged Flanges are thoroughly tested to ensure they meet all relevant industry standards, giving you the confidence that they will perform well under the most demanding conditions. As trusted forged flanges suppliers, we work closely with our clients to offer tailored solutions, ensuring that each product is perfectly suited to their specific application requirements.

Forged Flanges 31803 Specification

A182 S31803 Flange Size Chart 1/2″ (15 NB) to 48″ (1200NB) DN10~DN5000
Duplex steel S31803 Flange Standards 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
Duplex S31803 Flange Pressure Rating ANSI Class 150 LBS, 300 LBS, 600 LBS, 900 LBS, 1500 LBS, 2500 LBS
ASTM A182 S31803 Duplex Flanges Pressure Calculation in DIN 6Bar 10Bar 16Bar 25Bar 40Bar / PN6 PN10 PN16 PN25 PN40, PN64
ASME SA 182 S31803 Flange 5K, 10 K, 16 K 20 K, 30 K, 40 K, 63 K
ASME SA182 S31803 Duplex steel Flange UNI 6Bar 10Bar 16Bar 25Bar 40Bar
A182 S31803 Flange EN 6Bar 10Bar 16Bar 25Bar 40Bar
Coating Oil Black Paint, Anti-rust Paint, Zinc Plated, Yellow Transparent, Cold and Hot Dip Galvanized
most typical types of ASTM A182 S31803 Duplex Flange Forged / Threaded / Screwed / Plate
Test Certificates

EN 10204/3.1B

Raw Materials Certificate

100% Radiography Test Report

Third-Party Inspection Report, etc
ASME SA182M Duplex S31803 Flange Production technique Forged, Heat treated, and machined
A182 S31803 Flange Connect Type/ 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
Special design

As per your drawing

AS, ANSI, BS, DIN, and JIS

15 NB (1/2″) to 200 NB (8″)

Equal and Reducing Configurations
ASME A182 Duplex S31803 Flange Test Direct-reading Spectrograph, Hydrostatic testing machine, X-ray detector, UI ultrasonic flaw detector, Magnetic particle detector
ASTM A182 Ferritic Stainless Steel S31803 Flange Equipment Press machine, Bending machine, Pushing Machine, electric bevelling machine, Sand-blasting machine, etc.
Duplex S31803 Flange Origin Indian / West Europe / Japan / USA / Korean
Manufacturer of Duplex steel ASTM A182 S31803 Flange

ANSI DIN, GOST, JIS, UNI, BS, AS2129, AWWA, EN, SABS, NFE, etc.

ASTM A182 S31803 Flange: -BS Flange, EN Flange, API 6A Flange, ANSI Flange, ASME Flange, DIN Flange, EN1092-1 Flange, UNI Flange, JIS/ KS Flange, BS4504 Flange, GB Flange, AWWA C207 Flange, GOST Flange, PSI Flange

B.S: BS4504, BS3293, BS1560, BS10

AS 2129: Table D; Table E; Table H

ANSI B16.5, ANSI B16.47 Series A & B, MSS SP44, ASA, API-605, AWWA, Custom Drawings

ANSI: ANSI B16.5, ANSI B16.47(API605), MSS SP44, ANSI B16.36, ANSI B16.48

ANSI B16.5, ANSI B16.47, MSS SP44, ANSI B16.36, ANSI B16.48

American Standard (ANSI)

German (DIN)

British standard (BS)

DIN: DIN 2527, DIN 2566, DIN 2573, DIN 2576, DIN 2641, DIN 2642, DIN 2655, DIN 2656, DIN 2627, DIN 2628, DIN 2629, DIN 2631, DIN 2632, DIN 2633, DIN 2634, DIN 2635, DIN 2636, DIN 2637, DIN 2638 ASTM A182 S31803 Duplex Flanges

The other standard: AWWA C207; EN1092-1, GOST12820, JIS B2220; KS B1503, SABS1123; NFE29203; UNI2276
ASME SA182M Duplex S31803 Flange Uses & application

Bitumen upgraders.

Heavy oil refineries.

Nuclear power (mostly seamless).

Petrochemicals and acids.

 

Chemical Composition Of Forged Flanges 31803

Grade

Common Name

C%

Mn%

Si%

P%

S%

Cr%

Ni%

Mo%

N%

2205

S31803

0.030

2.00

1.00

0.030

0.020

21.0-23.0

4.5-6.5

2.5-3.5

0.08-0.20

2205

S32205

0.030

2.00

1.00

0.030

0.020

22.0-23.0

4.5-6.5

3.0-3.5

0.14-0.20

 

Mechanical Properties Of Forged Flanges 31803

Tensile strength

620MPa min

Density

7,805kg/m3

Yield strength

450MPa mi

Elastic modulus

200GPa

 

Physical Properties Of Forged Flanges 31803

Elongation 25% min Mean coefficient of thermal expansion
Brinell hardness 293 HB max 0-100oC 13.7µm/m/oC
Rockwell hardness 31 HR C max 0-315oC

Duplex Steel Uns S31803 Forged Fittings Equivalent Standard:

STANDARD

UNS

WERKSTOFF NR.

Duplex 2205

S31803

1.4462

Other Grades Also Available:

Stainless Steel :

Grade: 304, 304L, 304H, 309, 309S, 316, 316L, 316H, 310, 310S, 317, 317L, 321, 347, 904L

Alloy 20:

Grade : WP 1, WP 5, WP 9, WP 11, WP 12, WP 22, WP 91

Monel :

Grade: Monel 400, Monel K500, Monel R-405

Inconel :

Grade: Inconel 600, Inconel 601, Inconel 625, Inconel 718

Nickel :

Grade: Nickel 200, Nickel 201

Titanium :

Grade: Gr1, Gr2, Gr3, Gr5, Gr7, Gr11

Alloy Steel:

Grade: WP 1, WP 5, WP 9, WP 11, WP 12, WP 22, WP 91

Carbon Steel :

Grade: WPB, WPBW, WPHY 42, WPHY 46, WPHY 52, WPH 60, WPHY 65 & WPHY 70

 

Types Of Duplex Steel Uns S31803 Forged Fittings:

  •  Duplex Steel Threaded UNS S31803 Pipe Fittings
  • Forged Threaded UNS S31803 Elbow
  • UNS S31803 Forged Threaded Equal & Unequal Tee
  • UNS S31803 Threaded Equal & Unequal Cross
  • UNS S31803 Threaded Half & Full Couplings
  • UNS S31803 Threaded Reducing Couplings
  • UNS S31803 Threaded Cap
  • UNS S31803 Threaded Reducing Insert
  • UNS S31803 Threaded Bushing
  • UNS S31803 Threaded Pipe Nipples
  • UNS S31803 Threaded Hex Nipples
  • UNS S31803 Threaded Plug
  • UNS S31803 Threaded Unions
  • UNS S31803 Duplex Steel Socket Weld Pipe Fittings
  • UNS S31803 Forged Socket Weld Elbow
  • UNS S31803 Forged Socket Weld Equal & Unequal Tee
  • UNS S31803 Socket Weld Equal & Unequal Cross
  • UNS S31803 Socket Weld Half & Full Couplings
  • UNS S31803 Socket Weld Reducing Couplings
  • UNS S31803 Socket Weld Cap
  • UNS S31803 Socket Weld Reducing Insert

Widest Stock Of Duplex Steel Forged Flanges 31803

  • Duplex Steel S32205 Industrial Flanges
  • ASME B16.5 Duplex Steel S31803 Plate Flanges
  • ASTM A182 S31803 Duplex Steel Pipe Flange
  • ASME SA182 S32205 Duplex Steel Flat Flanges
  • S31803 Forged Duplex Steel Flange
  • Duplex Steel S31803 Slip-On Flange Manufacturer
  • UNS S32205 Orifice Flanges
  • Duplex Steel S32205 Socket weld Flange Supplier
  • Duplex Steel UNS S31803 Blind Flanges
  • UNS S32205 Screwed Flanges
  • 1.4462 SORF Flanges
  • UNS S31803 Threaded Flanges

Manufacturing Standards / Pressure Rating Of Forged Flanges 31803

ASME/ANSI B 16.5

Blind Flange, High Hub Blind Flange, Slip Flange, Welding Neck Flange, Socket Weld Flange, Ring Type Joint Flange, Lap Joint Flange, Threaded Flange

PRESSURE CLASS

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

ASME/ANSI B 16.47

Blind Flange [Series A & B], Welding Neck Flange

PRESSURE CLASS

75, 150, 300, 400, 600, 900

ASME/ANSI B 16.36

Slip-on Flange, Threaded Flange, Welding Neck Flange,

PRESSURE CLASS

300, 400, 600, 900, 1500, 2500

BS 4504 SEC 3.1

Plate Flange, Loose Plate Flange, Loose Plate With Weld Neck Flange, Blank Flange, Welding Neck Flange, Hubbed Slip Flange, Hubbed Threaded Flange, Lapped Pipe End Flange,

PRESSURE CLASS

PN 2.5 TO PN 40

BS 4504[PART 1]

Plate Flange, Loose Plate With Weld On Plate Collar, Blank Flange, Welding Neck Flange, Hubbed Slip-On Hubbed Threaded,

PRESSURE CLASS

PN 2.5 TO PN 400

BS 1560 BOSS

Plate Flange, Loose Plate With Weld On Plate Collar, Blank Flange, Welding Neck Flange, Hubbed Slip-On Hubbed Threaded,

PRESSURE CLASS

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

BS10

Welding Neck Flange, Plate Slip-On Flange, Screwed Boss Flange, Slip-On Boss Flange, Blind Flange

TABLE

D, E, F, H

DIN FLANGES

DIN 2527, 2566, 2573, 2576, 2641,2642, 2655, 2656, 2627, 2628, 2629, 2631, 2632, 2633, 2634, 2635, 2636, 2637,2638, 2673

PRESSURE CLASS

PN 6 TO PN 100

 

Size Of Forged Flanges 31803 :

Normal Sizes In inch Dimension ASME B16.5 S31803 Duplex Steel Flanges Dimensional Sizes 1/2 inch. to 2 1/2 inch.

Class 125

Class 150

 Class 300 Class 400 Class 600 Class 900 Class 1500 Class 2500
inch. mm inch. millim, enter inch mm inch. mm inch. mm inch. mm inch mm
1/2 A 3 1/2 88.9 3 3/4 95.2 3 3/4 95.2 3 3/4 95.2 4 3/4 121 4 3/4 121 5 1/4 133.4
b 7/16 11.1 9/16 14.3 9/16 14.3 9/16 14.3 7/8 22.2 7/8 22.2 1 3/16 30.2
D2 1 3/8 34.9 1 3/8 34.9 1 3/8 34.9 1 3/8 34.9 1 3/8 34.9 1 3/8 34.9 1 3/8 34.9
D1 2 3/8 60.3 2 5/8 66.7 2 5/8 66.7 2 5/8 66.7 3 1/4 82.6 3 1/4 82.6 3 1/2 88.9
n 4 4 4 4 4 4 4 4 4 4 4 – 4 44
d 5/8 15.9 5/8 15.9 5/8 15.9 5/8 15.9 7/8 22.2 7/8 22.2 7/8 22.2
3/4 A 3 7/8 98.4 4 5/8 117.5 4 5/8 117.5 4 5/8 117.5 5 1/8 130 5 1/8 130 5 1/2 139.7
b 1/2 12.7 5/8 15.9 5/8 15.9 5/8 15.9 1 25.4 1 25.4 1 1/4 31.8
D2 1 11/16 42.9 1 11/16 42.9 1 11/16 42.9 1 11/16 42.9 1 11/16 42.9 1 11/16 42.9 1 11/16 42.9
D1 2 3/4 69.8 3 1/4 82.5 3 1/4 82.5 3 1/4 82.5 3 1/2 88.9 3 1/2 88.9 3 3/4 95.2
n 4 4 4 4 4 4 4 4 4 4 4 – 4 44
d 5/8 15.9 3/4 19 3/4 19 3/4 19 7/8 22.2 7/8 22.2 7/8 22.2
1 A 4 1/4 108 4 7/8 123.8 4 7/8 123.8 4 7/8 123.8 5 7/8 149.2 5 7/8 149.2 6 1/4 159
b 9/16 14.3 11/16 17.5 11/16 17.5 11/16 17.5 1 1/8 28.6 1 1/8 28.6 1 3/8 34.9
D2 2 50.8 2 50.8 2 50.8 2 50.8 2 50.8 2 50.8 2 50.8
D1 3 1/8 79.4 3 1/2 88.9 3 1/2 88.9 3 1/2 88.9 4 102 4 102 4 1/4 108
n 4 4 4 4 4 4 4 4 4 4 4 4 4 4
d 5/8 15.9 3/4 19 3/4 19 3/4 19 1 25.4 1 25.4 1 25.4
1 1/4 A 4 5/8 117.5 5 1/4 133.4 5 1/4 133.4 5 1/4 133.4 6 1/4 159 6 1/4 159 7 1/4 184.2
b 5/8 15.9 3/4 19 13/16 20.6 13/16 20.6 1 1/8 28.6 1 1/8 28.6 1 1/2 38.1
D2 2 1/2 63.5 2 1/2 63.5 2 1/2 63.5 2 1/2 63.5 2 1/2 63.5 2 1/2 63.5 2 1/2 63.5
D1 3 1/2 88.9 3 7/8 98.4 3 7/8 98.4 3 7/8 98.4 4 3/8 111 4 3/8 111 5 1/8 130
n 4 4 4 4 4 4 4 4 4 4 4 4 4 4
d 5/8 15.9 3/4 19 3/4 19 3/4 19 1 25.4 1 25.4 1 1/8 28.6
1 1/2 A 5 127 6 1/8 155.6 6 1/8 155.6 6 1/8 155.6 7 177.8 7 177.8 8 203
b 11/16 17.5 13/16 20.6 7/8 22.2 7/8 22.2 1 1/4 31.8 1 1/4 31.8 1 3/4 44.5
D2 2 7/8 73 98 2 7/8 73 2 7/8 73 2 7/8 73 2 7/8 73 2 7/8 73 2 7/8 73
D1 3 7/8 4 4 1/2 114 4 1/2 114 4 1/2 114 4 7/8 124 4 7/8 124 5 3/4 146
n 4 4 4 4 4 4 4 4 4 4 4 4 4 4
d 5/8 . 15.9 7/8 22.2 7/8 22.2 7/8 22.2 1 1/8 28.6 1 1/8 28.6 1 1/4 31.8
2 A 6 152.4 6 1/2 165.1 6 1/2 165.1 6 1/2 165.1 8 1/2 215.9 8 1/2 215.9 9 1/4 234.9
b 3/4 19 7/8 22.2 1 25.4 1 25.4 1 1/2 38.1 1 1/2 38.1 2 50.8
D2 3 5/8 92.1 3 5/8 92.1 3 5/8 92.1 3 5/8 92.1 3 5/8 92.1 3 5/8 92.1 3 5/8 92.1
D1 4 3/4 121 5 127 5 127 5 127 6 1/2 165.1 6 1/2 165.1 6 3/4 171
n 4 4 8 8 8 8 8 8 8 8 8 8 8 8
d 3/4 19 3/4 19 3/4 19 3/4 19 1 25.4 1 25.4 1 1/8 28.6
2 1/2 A 7 177.8 7 1/2 190.5 7 1/2 190.5 7 1/2 190.5 9 5/8 244 9 5/8 244 10 1/2 266.7
b 7/8 22.2 1 25.4 1 1/8 28.6 1 1/8 28.6 1 5/8 41.3 1 5/8 41.3 2 1/4 57.2
D2 4 1/8 104.8 4 1/8 104.8 4 1/8 104.8 4 1/8 104.8 4 1/8 105 4 1/8 105 4 1/8 105
D1 5 1/2 139.7 5 7/8 149.2 5 7/8 149.2 5 7/8 149.2 7 1/2 190.5 7 1/2 190.5 7 3/4 197
n 4 4 8 8 8 8 8 8 8 8 8 8 8 8
d 3/4 19 7/8 22.2 7/8 22.2 7/8 22.2

 

Tests We Carry Out (Including Both Destructive And Non-Destructive):

  • Positive material recognition
  • An examination of mechanical properties such as tensile, elongation, and area reduction.
  • Large-scale test
  • Chemical examination-Spectro analysis
  • Firmness test
  • Pitting protection test
  • Small tests
  • X-ray test
  • Impact analysis
  • Eddy current examining
  • Hydrostatic analysis
  • Prompt test

Packing:

  • Packing is quite important, especially in the case of international shipments in which consignment passes through various channels to reach the ultimate destination, so we put special concern regarding packaging.
  • We pack our goods in numerous ways based on the products. We pack our products in multiple ways, such as
  • Shrink-wrapped
  • Carton boxes,
  • Wooden pallets,
  • Wooden boxes,
  • Wooden crates

Duplex S31803/S32205 Flanges Application Industries

Our Duplex Stainless Steel S31803/S32205 Flanges are used in a wide range of applications and various industries. Below are a few of them:

  • Petrochemical Industry
  • Oil and Gas Industry
  • Chemical Industry
  • Power Plant Industry
  • Energy Industry
  • Pharmaceuticals Industry
  • Pulp & Paper Industry
  • Food Processing Industry
  • Aerospace Industry
  • Refining Industry

Duplex S31803/S32205 Flanges Application Industries

Our Duplex Stainless Steel S31803/S32205 Flanges are used in a wide range of applications and various industries. Below are a few of them:

  • Petrochemical Industry
  • Oil and Gas Industry
  • Chemical Industry
  • Power Plant Industry
  • Energy Industry
  • Pharmaceuticals Industry
  • Pulp & Paper Industry
  • Food Processing Industry
  • Aerospace Industry
  • Refining Industry

Other Products

Hot Selling Product

Countries We Export:

Cities We Supply:

London, New-York, Paris, Moscow, Tokyo, Dubai, Singapore, Barcelona, Los-Angeles, Madrid Rome, Chicago, Toronto, San-Francisco, Abu-Dhabi, St-Petersburg, Amsterdam, Berlin Prague, Washington,Istanbul, Las-Vegas, Doha, Seoul, Sydney, Beijing,  Miami, Munich, Milan, San-Diego, Bangkok, Vienna, Dublin, Vancouver, Boston,  Zurich,  Melbourne, Budapest, Houston, Seattle, Montreal, Hong-Kong, Frankfurt, Sao-Paulo, Tel-Aviv, Copenhagen, Calgary, Orlando, Atlanta, Dallas, Hamburg, Osaka, Lisbon, Austin, Phoenix Naples, Oslo, Denver, Stockholm, Riyadh, Delhi, Buenos Aires, San-Jose, Brussels, Portland Philadelphia, Ottawa, Helsinki, Valencia, Brisbane, Warsaw, Minneapolis, Shanghai, Lyon, Adelaide, Edmonton, Marseille, Muscat, Athens, Stuttgart, Rio-De-Janeii, Baltimore, Auckland, Cologne, New-Orlean, Kuwait-City,  Kiev, Hanover, Perth, Minsk, Bucharest, Nashville, Dusseldorf, Manchester, Sacramento, Glasgow, Mexico-City, Salt-Lake-Ci, Raleigh, Cracow