Corrosion Resistance
Duplex SS Flanges are extremely corrosion resistant. They have high resistance to intergranular corrosion.
Duplex Flanges suppliers in UAE
Alloy 2205 blind flanges and UNS S32205 slip on flange manufacturers in Dubai
What Makes Duplex Flanges Rust-resistant?
Duplex Flanges differ from austenitic stainless steel in that they include less nickel, more chromium, and close to 5% molybdenum. 2205 and 2507 are the two most popular duplex stainless steel. Due to its excellent corrosion resistance, 2507 is referred to as a "super duplex."
Like with any stainless steel, the amount of nitrogen, molybdenum, and chromium determines the stainless steel's ability to resist corrosion. Duplex stainless steel has high resilience to stress corrosion splitting even in sulfur and chloride conditions, making it corrosion-resistant.
It is a form of corrosion that can happen when a specific combination of conditions. These may include a corrosive atmosphere, maximum tensile, and a high enough temperature is met.
Which is Better: Flanged connections VS Welded connections For Duplex 2205 Flanges
An appropriate dual-phase ratio is a foundation for the outstanding efficiency of duplex stainless steel. Unfortunately, after welding, the double phase proportion of the joint is substantially out of balance, significantly lowering joint performance. Manual electrode arc welding has become the most often used method in practical uses.It is essential to understand how it affects joint performance.
The Duplex 2205 Flanges has a varied iron or austenitic phase concentration. The weld zone has the most excellent austenite content, whereas the heat-affected region has the minor austenite content.
Contact directly duplex stainless steel weld neck flanges and 2505 duplex flanges importers in the Middle East for the lowest price and fast delivery
Benefits & Uses Of Duplex Stainless Steel Flanges
Mixing ferritic with austenitic grades can produce a metal with a two-phase mechanical architecture that gains from the characteristics of microstructures.
Due to these qualities, duplex steel is valued in sectors like nuclear and industrial processing and oil and gas extraction.
Duplex Stainless Steel Flangesare now about half as robust as standard austenitic or ferritic stainless steels. They aren't as soft as austenitic grades, but duplex stainless steels are more ductile and robust than ferritic ones.
Check advantages of DDS flanges, stockists of DIN 1.4462 socket weld flanges in UAE, also check dimensions, composition, and weight chart as per ASME B16.5
Table of content
Specialized in manufacturing
Duplex Flanges
Duplex Flanges consists of a two-phase microstructure, which is ferritic and austenitic.
Size
1/2 Inches To 48 Inches
Class
150 To 2500
Schedule
SCH 10S To SCH 80S
ASME
B16.5
Properties Of Duplex Stainless Steel Flanges
Heat Resistance
The high chromium content of Duplex Flanges that p rotects against corrosion, at temperatures over about 300°C.
Fabrication
Fabrication of all stainless steel should be done only with tools dedicated to stainless steel materials.
Duplex 2205 Flanges Advantages
- Low thermal expansion
- High energy absorption
- Good weldability and workability
- High strength and good fatigue resistance
- Good general corrosion resistance
Duplex Stainless Steel Flanges Are Typically Used In:
- hemical processing, transport and storage
- Oil and gas exploration and offshore rigs
- Marine environments
- Chemical process plant
- Marine environments
- Pulp & paper manufacturing
DDS Flanges Facing Types
- Flat Face (FF)
- Raised Face (RF)
- Ring Type Joint (RTJ)
- Tongue Face (TF)
- Grooved Face (GF)
- Make & Female Flanges
| Specifications | Duplex Flanges |
|---|---|
| Brand Name | Schulzmann |
| Certificate | ISO |
| Supporting Material For Flanges | Gasket/ Ring Joint/ Flanges Bolts |
| Testing | Hydrostatic testing machine Magnetic particle detector Direct-reading Spectrograph UI trasonic flaw detector |
| Methods Of Forging | Casting Forging Rolling Cutting |
| JIS Standard | 5K/ 10K/ 16K 20K/ 30K/ 40K/ 63K |
| Size | 1/2” to 24” (customized diameters: up to 60”.) |
| Payment Type | L/C,T/T,D/P,Paypal |
| Available Packing | Packing In Plywood Box And Plywood Pallet |
| Transportation In | Air & Ocean and Land |
| DIN Standard | PN6/ PN10/ PN16/ PN25/ PN40/ PN64 |
| Equipment | Pushing Machine Press machine electric bevelling machine |
| Class | Class 150 to 2500. PN 2.5 to PN 250. |
| EN Standard | 6Bar/ 10Bar/ 16Bar/ 25Bar/ 40Bar |
| Use In | Marine & dredging Sanitation Process Instrumentation Oil and Gas Petrochemical/ Refinery/Chemical Power etc. |
| Manufacturing Productivity | 700 ton per month |
| Supply Ability | 500 Ton Per Month |
| Face Type | RF (Raised Face), RTJ (Ring Type Joint) |
Duplex 2205 Flanges Price List
| Description | Price In US ($) |
|---|---|
| DUPLEX SS LWNRF, NPS 2 (DN 50) X 19.5 MM THK X 600#, HUB OD 84 MM X ID 45 | US $450.77 Per KG |
| DUPLEX SS LWNRF, NPS 1.5 (DN40) X 18 MM THK X 600# HUB OD 70 MM X ID 34 | US $726.46 Per KG |
| WELDNECK, 4 IN, CLASS 900, ASME B16.5 RF A/SA182 F51 | US $4454.19 Per KG |
| 1.5 INCH, 300#, BLRF DUPLEX -FLANGE | US $57.93 Per KG |
| 1.5 INCH, 600# RTJ, (WITHOUT RTJ GROOVE) UNS 32205 F60 | US $410.56 Per KG |
| 2 INCH, 300#, BLRF, DUPLEX Steel, F60, ASME B16.5 | US $332.71 Per KG |
| 1.5 INCH, CLASS 150, BLRF, DUPLEX, UNS 32205 B16.5 | US $175.81 Per KG |
| SORF FLANGE, 1.5MM DUPLEX 2205, 150# | US $195.10 Per KG |
| SORF FLANGE, 3MM, DUPLEX 2205, 300# | US $1554.18 Per KG |
Standard
Types Of ASTM A182 2505 Duplex Steel Flanges
Duplex Blind Flange
Duplex 2205 Slip On Flange
Alloy 2205 Weld Neck Flange
DIN 1.4462 Threaded Flange
UNS S31803 RTJ Flange
Duplex S32205 Orifice Flange
ASTM A182 F51 Spectacle Blind Flange
Duplex Stainless Steel Plate Flange
Duplex 2205 Reducing Flange
2205 Stainless Steel Raised Face Flange
Duplex 2205 Socket Weld Flange
Duplex 2205 Flange
Duplex Stainless Steel Flange
Duplex Steel Flange
UNS S32205 Flange
UNS S31803 Flange
Duplex SS Flange
DDS Flanges
*For Class 75, Class 150 and Class 300.
| Temperature °F |
Working Pressure by Classes, psi | ||
| Class 75 | Class 150 | Class 300 | |
| -20~100 | 145 | 290 | 750 |
| 200 | 130 | 260 | 745 |
| 300 | 115 | 230 | 665 |
| 400 | 100 | 200 | 615 |
| 500 | 85 | 170 | 580 |
| 600 | 70 | 140 | 555 |
| 650 | 60 | 125 | 545 |
| 700 | - | 110 | 540 |
| 750 | - | 95 | 530 |
*For Class 400, Class 600 and Class 900.
| Temperature °F |
Working Pressure by Classes, psi | ||
| Class 400 | Class 600 | Class 900 | |
| -20~100 | 1000 | 1500 | 2250 |
| 200 | 990 | 1490 | 2230 |
| 300 | 890 | 1335 | 2000 |
| 400 | 820 | 1230 | 1845 |
| 500 | 775 | 1160 | 1740 |
| 600 | 740 | 1115 | 1670 |
| 650 | 730 | 1095 | 1640 |
| 700 | 725 | 1085 | 1625 |
| 750 | 710 | 1065 | 1595 |
*For Class 1500 and Class 2500.
| Temperature °F |
Working Pressure by Classes, psi | |
| Class 1500 | Class 2500 | |
| -20~100 | 3750 | 6250 |
| 200 | 3720 | 6200 |
| 300 | 3335 | 5560 |
| 400 | 3070 | 5120 |
| 500 | 2905 | 4840 |
| 600 | 2785 | 4640 |
| 650 | 2735 | 4560 |
| 700 | 2710 | 4520 |
| 750 | 2660 | 4430 |
Duplex Stainless Steel Flanges Formula
This is calculated the usage of weighted % of key alloying elements present in any particular grade of duplex stainless steel flanges. The formula used is:
PREn = % Cr + (3.3 x % Mo) + (16 x % N)
View heat treatment and manufacturing process of duplex 2205 flanges, manufacturers & suppliers of duplex S32205 orifice flange and ASTM A182 F51 spectacle blind flange in UAE
Class 150 2205 Duplex Flanges Dimensions
| NPS /strong> |
O.D. of flanges |
Minimum WT |
Length Of Overall | B.C. | Number Holes | O.D. of R/F | |||
|---|---|---|---|---|---|---|---|---|---|
| WNRF | SORF & SWRF BLRF |
Lapped Joint | |||||||
| O | Q | Y | Diameter | Number | Diameter | R | |||
| 1/2 | 89 | 11.2 | 47.6 | 15.9 | 15.9 | 60.5 | 4 | 15 | 35 |
| 3/4 | 117 | 15.9 | 57.2 | 25.4 | 25.4 | 82.5 | 4 | 15 | 43 |
| 1 | 108 | 14.3 | 55.6 | 17.5 | 17.5 | 79.5 | 4 | 15 | 51 |
| 1.1/4 | 117 | 15.9 | 57.2 | 20.6 | 20.6 | 89.0 | 4 | 15 | 64 |
| 1.1/2 | 127 | 17.5 | 61.9 | 22.2 | 22.2 | 98.5 | 4 | 15 | 73 |
| 2 | 152 | 19.1 | 63.5 | 25.4 | 25.4 | 120.5 | 4 | 19 | 92 |
| 2.1/2 | 178 | 22.3 | 69.8 | 28.6 | 28.6 | 139.5 | 4 | 19 | 105 |
| 3 | 190 | 23.9 | 69.8 | 30.2 | 30.2 | 152.5 | 4 | 19 | 127 |
| 3.1/2 | 216 | 23.9 | 71.4 | 31.8 | 31.8 | 178.0 | 8 | 19 | 140 |
| 4 | 229 | 23.9 | 86.2 | 33.3 | 33.3 | 190.5 | 8 | 19 | 157 |
| 5 | 254 | 23.9 | 88.9 | 36.5 | 36.5 | 216.0 | 8 | 22 | 186 |
| 6 | 279 | 25.4 | 88.9 | 39.7 | 39.7 | 241.5 | 8 | 22 | 216 |
| 8 | 343 | 28.6 | 101.6 | 44.4 | 44.4 | 298.5 | 8 | 22 | 270 |
| 10 | 406 | 30.2 | 101.6 | 49.2 | 49.2 | 362.0 | 12 | 25 | 324 |
| 12 | 483 | 31.8 | 114.3 | 55.6 | 55.6 | 432.0 | 12 | 25 | 381 |
| 14 | 533 | 35.0 | 127.0 | 57.2 | 79.4 | 476.0 | 12 | 29 | 413 |
| 16 | 597 | 36.6 | 127.0 | 63.5 | 87.3 | 539.5 | 16 | 29 | 470 |
| 18 | 635 | 39.7 | 139.7 | 68.3 | 96.8 | 578.0 | 16 | 32 | 533 |
| 20 | 698 | 42.9 | 144.5 | 73.0 | 103.2 | 635.0 | 20 | 32 | 584 |
| 24 | 813 | 47.7 | 152.4 | 82.6 | 111.1 | 749.5 | 20 | 35 | 692 |
Heat Treatment Of Duplex Steel Flanges
2205 Duplex Stainless Steel Flanges Mechanical Properties
| Grade | Duplex 2205 Flanges |
| Proof Stress 0.2% (MPa) | 450 |
| Elongation A5 (%) | 25 |
| Tensile Strength (MPa) | 620 |
Duplex 2505 Weld Neck Flanges Chemical Composition
| % | Duplex 2205 Flanges |
| Cr | 21-23 |
| Mo | 2.5-3.5 |
| Ni | 4.5-6.5 |
| N | 0.08-0.2 |
| Cu | - |
| Si | 1.0 |
| P | 0-0.03 |
| S | 0-0.02 |
| C | 0-0.03 |
| Mn | 2.0 |
Don't forget to check our duplex SS plate flange oil & gas application, and also check the online inventory of duplex steel lap joint flanges
How Is Duplex Steel Flanges Made?
UNS S32205 Flanges Physical Properties
| Grade | 2205 |
| Elongation A5 (%) | 25 |
| Tensile Strength (MPa) | 620 |
| Proof Stress 0.2% (MPa) | 450 |
Duplex Blind Flange Weight Chart
| NPS | Weight In Duplex 2205 Blind Flanges In KG |
|---|---|
| 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 |
2205 Duplex Slip On Flanges Tolerance
| OD * | |
|---|---|
| ≤ 24 = 1.6 (mm) | > 24 = ± 3.2 (mm) |
| ID | |
| ≤ 10 = ± 0.8 (mm) | ≥ 12 = + 1.6 (mm) / - 0 (mm) |
| Hub OD | |
| ≤ 12 = + 2.4 (mm) / - 1.6 (mm) | ≥ 14 = ± 3.2 (mm) |
| Drilling | |
| B.C.= 1.6 (mm) | Spacing Of Bolt Hole = ± 0.8 (mm) |
| Eccentricity Of Bolt Circle | |
| ≤ 2.1/2 = 0.8 (mm) max. | ≥ 3 = 1.6 (mm) max. |
| Thick. | |
| ≤ 18 = + 3.2 (mm) / - 0 | ≥ 20 = + 4.8 (mm) / - 0 |
| thru Hub Length | |
| ≤ 18 = + 3.2 (MM) / - 0.8 (MM) | ≥ 20 = + 4.8 (MM) / - 1.6 (MM) |
| Contact Face Dia. | |
| 1.6 MM R/F = ± 0.8 MM | 6.35 MM R/F, Tongue and Groove |
Questions Of DDS Flanges With Answers
