Bhadra Engimech is one of the premier Duplex Steel Flanges Manufacturers in India. Duplex stainless steels have a mixed microstructure of austenite and ferrite, providing double the strength of standard austenitic grades along with superior stress corrosion resistance.
Technical Specifications
Duplex Steel Flanges Specification
| Specifications |
ASTM A182 / ASME SA182 |
| Duplex Steel Flanges 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 Flanges. |
| ASTM A182 Duplex Steel Flange HS Code |
Duplex Steel Flange HS Code: 7307 |
| Duplex Steel Flanges Standard DIN |
6Bar 10Bar 16Bar 25Bar 40Bar / PN6 PN10 PN16 PN25 PN40, PN64 |
| Duplex Steel Flanges Standard ANSI |
Class 150 LBS, 300 LBS, 600 LBS, 900 LBS, 1500 LBS, 2500 LBS |
| Duplex Steel Flanges Standard UNI |
6Bar 10Bar 16Bar 25Bar 40Bar |
| Duplex Steel Flanges Standard JIS |
5K, 10 K, 16 K 20 K, 30 K, 40 K, 63 K |
| ASME B16.5 Duplex Steel Flange size range |
1/2″ (15 NB) to 48″ (1200NB) DN10~DN5000 |
| Stainless Steel Duplex Flange Standard EN |
6Bar 10Bar 16Bar 25Bar 40Bar |
| Duplex Steel Pipe Flanges Test Certificates |
EN 10204/3.1B
Raw Materials Certificate
100% Radiography Test Report
Third Party Inspection Report, etc |
| Material |
Gasket, Ring Joint, Flange Bolts |
| ASTM A182 Duplex Steel Flanges Production technique |
Forged, Heat treated, and machined |
| Duplex Flanges Main Types |
Forged / Threaded / Screwed / Plate |
| Most common types of Duplex Steel Flanges |
Weld Neck Ring Flanges (WNRF), Duplex Steel
Slip-On Ring Flanges (SORF), Duplex Steel
Blind Ring Flanges (BLRF), Duplex Steel
Socket Weld Ring Flanges (SWRF), Duplex Steel
Threaded Ring Flanges, Duplex Steel
Lap Joint Ring Flanges (LJRF), Duplex Steel
Ring Type Joint Flanges (RTJF), Duplex Steel |
| Duplex Flange Connect Type/ Flange Face Type |
Raised Face (RF), Ring Type Joint (RTJ), Large Male-Female (LMF), Flat Face (FF), Small Male-Female (SMF), Lap-Joint Face (LJF), Small Tongue, Large Tongue & Groove, Groove |
| Duplex Steel Flange Test |
X-ray detector, direct-reading Spectrograph, Hydrostatic testing machine, UI trasonic flaw detector, Magnetic particle detector |
| Equipment for DSS Flange |
Press machine, Bending machine, Pushing Machine, electric bevelling machine, Sand-blasting machine, etc |
| Special design |
As per your drawing
AS, ANSI, BS, DIN, and JIS
15 NB (1/2″) to 200 NB (8″)
Equal and Reducing Configurations |
| Specialized manufacturer of Duplex Flanges |
DSS Rtj Flanges
Duplex Stainless Steel Pn16 Flanges
DIN 2566 pn16
DIN 2566 en 1092 1
DIN 2566 pn10
Duplex Steel Weld Neck Flanges
ASTM A182 Duplex Steel Threaded Flanges
Duplex Slip-On Flanges
ASTM A182 Duplex Steel Large Diameter Flanges
Duplex Stainless Sorf Flanges
Stainless Steel Duplex Blind Flanges
Duplex Steel Table Flanges
Duplex Stainless Socketweld Flanges
Stainless Steel Duplex Plate Flanges
DSS Lap Joint Flanges
Duplex Steel Loose Flanges
ASME B16.36 ASME SA182 Duplex Steel Orifice Flanges
ASTM A182 Duplex Steel AS 4087 Water Flanges |
| Key markets and industries for Duplex Steel Flanges |
Bitumen upgraders.
Heavy oil refineries.
Nuclear power (mostly seamless).
Petrochemicals and acids. |
| Duplex Steel Flanges Standard |
ANSI Flange
JIS/ KS Flange
API 6A Flange
ASME Flange
DIN Flange
EN1092-1 Flange
UNI Flange
BS4504 Flange
GB Flange
AWWA C207 Flange
GOST Flange
PSI Flange |
Duplex Steel Flange Types
Duplex Steel Slip-on Flange
Duplex Steel Threaded Flanges
Duplex Steel Lap Joint Flange
Duplex Steel Blind Flange
Duplex Steel Socket Weld Flange
Duplex Steel Weld Neck Flange
Duplex Steel Long Weld Neck Flange
Duplex Steel Companion Flange
Duplex Steel Orifice Flange
Duplex Steel Flanges Equivalent Standards
| STANDARD |
WERKSTOFF NR. |
UNS |
| Duplex 2205 |
1.4462 |
S31803 / S32205 |
Mechanical & Physical Properties of Duplex Steel Flanges
| Density (g/cm 3) |
Density (lb/in 3) |
Melting Point (°C) |
Melting Point (°F) |
| 7.805 |
0.285 |
1420 – 1465 |
2588 – 2669 |
ASME B16.5 300 LB Flanges Dimensions & Weight Chart
| Standard |
Class |
Diameter |
Bolt Circle Diameter |
Number of Bolts |
Bolt Size |
Diameter of Bolt Hole |
| AS4087 |
PN14 |
95 |
67 |
4 |
M12 |
14 |
| AS 2129 |
Table C |
95 |
67 |
4 |
13 |
14 |
| Table D |
95 |
67 |
4 |
13 |
14 |
| Table E |
95 |
67 |
4 |
13 |
14 |
| Table F |
95 |
67 |
4 |
13 |
14 |
| Table H |
114 |
83 |
4 |
16 |
17 |
| Table J |
114 |
83 |
4 |
16 |
17 |
| ANSI B16.5 |
ANSI 150 |
89 |
60 |
4 |
13 |
16 |
| ANSI 300 |
95 |
67 |
4 |
13 |
16 |
| ANSI 600 |
95 |
67 |
4 |
13 |
16 |
| ANSI 900 |
121 |
83 |
4 |
19 |
22 |
| ANSI 1500 |
121 |
83 |
4 |
19 |
22 |
| ISO 7005 (DIN) |
PN6 |
80 |
55 |
4 |
M10 |
11 |
| PN10 |
95 |
65 |
4 |
M12 |
14 |
| PN16 |
95 |
65 |
4 |
M12 |
14 |
| PN20 |
90 |
60.5 |
4 |
M14 |
16 |
| PN25 |
95 |
65 |
4 |
M12 |
14 |
| PN40 |
95 |
65 |
4 |
M12 |
14 |
Application And Uses
- Duplex Steel Flanges used in Chemicals Industry
- Duplex Steel Flanges used in Heavy Oil refineries.
- Duplex Steel Flanges used in Textile Machinery.
- Duplex Steel Flanges used in Bitumen upgraders.
- Duplex Steel Flanges used in Nuclear power (mostly seamless).
- Duplex Steel Flanges used in Petrochemicals and acids.
- Duplex Steel Flanges used in Pulp and Paper Industry
