Duplex Stainless Steel Flanges Manufacturer in Mumbai With Different Grades
Duplex Stainless Steel Flanges Grades
| Grades |
UNS Number |
Type |
| Duplex 2205 |
S31803 / S32205 |
Standard Duplex |
Duplex Steel Blind Flanges
Duplex Stainless Weld Neck Flanges
Stainless Steel Duplex Socket Weld Flanges
Duplex Flanges Specification
Duplex Flanges Standard Sizes
- Schedule :Sch 5 to XXS
- NPS:1/2" to 48"
- Class:150 to 2500#
Duplex Steel Flange Face
Duplex Flanges Thread
Flange Duplex Testing
- Pressure
- Tensile
- PMI
- Hardness test
DSS Weld Neck Flange Supporting Material
- Gaskets
- Flange Bolts
- Ring Joint
Duplex Steel Flange Physical Properties
- Density: 7.8 g/cm³
- Melting Point: 1350 – 1450 °C
- Temprature Range:500 J/kg·K
Duplex Flanges Standards
- UNS S31803 / S32205
- WNR 1.4462
Duplex SS Flanges Origin
- Japanese
- Indian, Korean
- European, American
Duplex SS Threaded Flange Fulfill
- NACE MR0175/ MR0103
- ISO 15156
- Sour service
DSS Blind Flanges Process
Duplex SS Weld Neck Flange Surface Finish
- Spiral/Concentric
- Mirror, Serrated
- Smooth
Duplex Flanges Types
- Blind
- Weld Neck
- Slip On etc.
DSS Weld Neck Flange Documentation
- MTC
- 100% Radiography Test Report
- Third Party Inspection
Duplex SS Plate Flange Dimensional Standards
- ASME B16.47 Series A & B
- MSS SP44
- ASME B16.5
Duplex Flanges Application
- Oil & Gas
- Chemical & Petrochemical
- Marine & Shipbuilding
- Pulp & Paper
Duplex Steel Slip On Packaging
- Bubble Wrap
- Plastic Bags
- Anti-tarnish Paper
- Plastic Wrap
Purchase Duplex Steel Slip On and Blind Flanges With Pressure Class 150 to 2500 LBS
Duplex SS Flange Pressure Rating
| Temperature In °F |
Working Pressure |
| CL 150 |
CL 300 |
CL 600 |
CL 900 |
CL 1500 |
CL 2500 |
| -20~100 |
290 |
750 |
1500 |
2250 |
3750 |
6250 |
| 500 |
170 |
580 |
1160 |
1740 |
2905 |
4840 |
| 600 |
140 |
555 |
1115 |
1670 |
2785 |
4640 |
| 700 |
110 |
540 |
1085 |
1625 |
2710 |
4520 |
| 200 |
260 |
745 |
1490 |
2230 |
3720 |
6200 |
| 300 |
230 |
665 |
1335 |
2000 |
3335 |
5560 |
| 400 |
200 |
615 |
1230 |
1845 |
3070 |
5120 |
Duplex Steel Pipe Flanges Size Chart
| Normal Pipe Size |
DN |
| 1/2 |
15 |
| 3/4 |
20 |
| 1 1/4 |
32 |
| 2 |
50 |
| 1 1/2 |
40 |
| 1 |
25 |
| 3 |
80 |
| 2 1/2 |
65 |
| 4 |
100 |
Duplex Stainless Steel Flanges Price
Duplex Flanges Dimension Chart
| Class |
Nominal Pipe Size |
NPT Flange |
SW Flange |
Slip on Flange |
Blind Flange |
Weld Neck Flange |
Loose Flange |
| 150# |
½ |
1 |
2 |
1 |
2 |
2 |
1 |
| - |
¾ |
2 |
2 |
2 |
2 |
2 |
2 |
| - |
1 |
2 |
2 |
2 |
2 |
3 |
2 |
| - |
1¼ |
3 |
3 |
3 |
3 |
3 |
3 |
| - |
1½ |
3 |
3 |
3 |
4 |
4 |
3 |
| - |
2 |
5 |
5 |
5 |
5 |
6 |
5 |
| - |
2½ |
8 |
8 |
8 |
7 |
10 |
8 |
| - |
3 |
9 |
9 |
9 |
9 |
11.5 |
9 |
| - |
3½ |
12 |
11 |
11 |
13 |
12 |
11 |
| - |
4 |
13 |
13 |
13 |
17 |
16.5 |
13 |
| - |
5 |
15 |
15 |
15 |
20 |
21 |
15 |
| - |
6 |
19 |
19 |
19 |
27 |
26 |
19 |
| - |
8 |
30 |
30 |
30 |
47 |
42 |
30 |
| - |
10 |
43 |
43 |
43 |
70 |
54 |
43 |
| 300# |
½ |
2 |
3 |
2 |
2 |
2 |
2 |
| - |
¾ |
3 |
3 |
3 |
3 |
3 |
3 |
| - |
1 |
3 |
3 |
3 |
4 |
4 |
3 |
| - |
1¼ |
4.5 |
4 |
4.5 |
6 |
5 |
4.5 |
| - |
1½ |
6.5 |
6 |
6.5 |
7 |
7 |
6.5 |
| - |
2 |
7 |
7 |
7 |
8 |
9 |
7 |
| - |
2½ |
10 |
10 |
10 |
12 |
12 |
10 |
| - |
3 |
14 |
13 |
13 |
16 |
18 |
14.5 |
| - |
3½ |
17 |
17 |
17 |
21 |
20 |
17 |
| - |
4 |
24 |
22 |
23.5 |
28 |
26.5 |
24 |
| - |
5 |
31 |
28 |
29 |
37 |
36 |
28 |
| - |
6 |
39 |
39 |
39 |
50 |
45 |
39 |
| - |
8 |
58 |
58 |
58 |
81 |
69 |
58 |
| 600# |
½ |
2 |
2 |
2 |
3 |
3 |
2 |
| - |
¾ |
3 |
3 |
3 |
4 |
4 |
3 |
| - |
1 |
4 |
4 |
4 |
4 |
4 |
4 |
| - |
1¼ |
5 |
5 |
5 |
6 |
6 |
5 |
| - |
1½ |
7 |
7 |
7 |
8 |
8 |
7 |
| - |
2 |
9 |
9 |
9 |
10 |
12 |
9 |
| - |
2½ |
13 |
13 |
13 |
15 |
18 |
12 |
| - |
3 |
16 |
16 |
16 |
20 |
23 |
15 |
| - |
3½ |
21 |
21 |
21 |
29 |
26 |
20 |
| - |
4 |
37 |
37 |
37 |
41 |
42 |
36 |
| - |
5 |
63 |
63 |
63 |
68 |
68 |
63 |
| - |
6 |
80 |
80 |
80 |
86 |
81 |
78 |
| - |
8 |
15 |
15 |
115 |
140 |
120 |
112 |
| - |
10 |
177 |
177 |
177 |
231 |
190 |
195 |
Siddhagiri Metals is a trusted Duplex Flanges Supplier in India, providing high-quality flanges that meet stringent industry standards.
Duplex Flange HSN Code
| Description |
HSN Code |
| Duplex Stainless Steel Flange |
73072100 |
Duplex Flange Weight Chart
| NPS |
Class 150 |
Class 300 |
Class 600 |
Claas 900 |
Class 1500 |
Class 2500 |
| - |
Blind |
BL |
BLRF |
RFBL |
Blind (BL) |
BL (Blind ) |
| 4 |
5.9 |
12.6 |
18.5 |
24.3 |
32.9 |
59.9 |
| 2½ |
3.6 |
5.4 |
6.8 |
14.4 |
15.8 |
25.2 |
| 6 |
8.6 |
22.5 |
38.7 |
51.8 |
72 |
155.3 |
| 8 |
13.5 |
36.5 |
63 |
90 |
135.9 |
239.8 |
| 3/4 |
0.9 |
1.4 |
1.8 |
2.7 |
2.7 |
4.5 |
| 10 |
19.4 |
55.8 |
103 |
130.5 |
229.5 |
461.3 |
| 12 |
28.8 |
83.3 |
132.8 |
186.8 |
348.8 |
658.8 |
| 3 |
4.1 |
7.2 |
9 |
15.8 |
21.6 |
38.7 |
| 1 |
0.9 |
1.8 |
1.8 |
4.1 |
4.1 |
5.4 |
| 1½ |
1.4 |
3.2 |
3.6 |
6.3 |
6.3 |
11.3 |
| 2 |
2.3 |
3.6 |
4.5 |
11.3 |
11.3 |
17.6 |
| 5 |
6.8 |
16.7 |
30.6 |
39.2 |
63 |
100.4 |
| 1/2 |
0.5 |
0.9 |
1.4 |
1.8 |
1.8 |
3.2 |
| 14 |
40.5 |
112.5 |
170.1 |
234 |
438.8 |
– |
| 16 |
47.7 |
141.8 |
237.2 |
278.6 |
585 |
– |
| 18 |
58.5 |
186.3 |
299.3 |
396 |
787.5 |
– |
Discover Our Ready Inventory in These Locations
| Kenya |
Houston |
Tunisia |
Morocco |
Gabon |
Dubai |
| Ethiopia |
Zambia |
Tanzania |
Angola |
Egypt |
Ghana |
| Indiana |
California |
Carolina |
New South Wales |
Texas |
Algeria |
| South Africa |
Mozambique |
Oman |
Abu Dhabi |
Nigeria |
USA |
| Riyadh |
Al-khobar |
Al Jubail |
Saudi Arabia |
Dammam |
UAE |
Manufacturing Facilities of Duplex Flanges
- Heat treatment
- Open / Close Die Forging & Rolling
- Bolt Hole drilling
- Machining
- Raw material cutting
What are the limitations of DSS Flanges in high-temperature environments ?
Find Source Of Custom Size DSS Weld Neck Flange With Various Face like RTJ, RF, FF etc.
Gasket Sizes of Duplex SS Flange
| Nominal Pipe Sizes |
Gasket ID |
Gasket OD |
| 300 LBS |
600 LBS |
900 LBS |
150 LBS |
400 LBS |
| 3/4 |
1.006 |
2.0625 |
2.0625 |
2.075 |
2.025 |
2.0625 |
| 2 1/2 |
2.088 |
5.0125 |
5.0125 |
6.050 |
4.0875 |
5.0125 |
| 4 |
4.050 |
7.0125 |
7.0625 |
8.0125 |
6.0875 |
7.000 |
| 6 |
6.062 |
9.0875 |
10.050 |
11.0375 |
8.075 |
9.075 |
| 1/2 |
0.084 |
2.0125 |
2.0125 |
2.050 |
1.0875 |
2.0125 |
| 1 1/4 |
1.066 |
3.025 |
3.025 |
3.050 |
3 |
3.025 |
| 1 |
1.031 |
2.0875 |
2.0875 |
3.0125 |
2.0625 |
2.0875 |
| 2 |
2.038 |
4.0375 |
4.0375 |
5.0625 |
4.0125 |
4.0375 |
| 5 |
5.056 |
8.050 |
9.050 |
9.075 |
7.075 |
8.0375 |
| 1 1/2 |
1.091 |
3.075 |
3.075 |
3.0875 |
3.0375 |
3.075 |
| 3 |
3.050 |
5.0875 |
5.0875 |
6.0625 |
5.0375 |
5.0875 |
| 10 |
10.075 |
14.025 |
15.075 |
17.0125 |
13.0375 |
14.0125 |
| 8 |
8.062 |
12.0125 |
12.0625 |
14.0125 |
11 |
12.000 |
| 12 |
12.075 |
16.0625 |
18.000 |
19.0625 |
16.0125 |
16.050 |
Global Duplex Flanges Supplier delivering cutting-edge solutions with enhanced protective properties.
Duplex Stainless Steel Flange Face Types
| Face Type |
Full Form |
| RF |
Raised Face |
| FF |
Flat Face |
| RTJ |
Ring Type Joint |
| TG |
Tongue and Groove |
| MF |
Male-Female |
Offer Duplex SS Threaded Flange With Schedule 5 to XXS Tested With Hardness Testing
Duplex SS Threaded Flange Testings
| Test Type |
Method |
| Non-Destructive Testing (NDT) |
Ultrasonic Testing (UT) |
| Dye Penetrant Testing (DPT) |
| Magnetic Particle Inspection (MPI) |
| Destructive Testing |
Tensile Test |
| Impact Test (Charpy V-Notch) |
| Hardness Test |
DSS Flange Thickness Calculation
Working Pressure of Duplex SS Threaded Flange
| Temp.
°F |
Working Pressure by Classes, psi |
| 75# |
150# |
300# |
| -20~100 |
145 |
290 |
750 |
| 600 |
70 |
140 |
555 |
| 650 |
60 |
125 |
545 |
| 300 |
115 |
230 |
665 |
| 400 |
100 |
200 |
615 |
| 500 |
85 |
170 |
580 |
| 700 |
- |
110 |
540 |
| 200 |
130 |
260 |
745 |
| 750 |
- |
95 |
530 |
Quality-driven Duplex Flanges Supplier producing components with premium resistance to degradation.
Duplex Flanges Types
Duplex Stainless Steel Slip On Flanges
Duplex Steel Blind Flanges
Duplex Stainless Weld Neck Flanges
Stainless Steel Duplex Socket Weld Flanges
Duplex Lap Joint Flanges
DSS Threaded Flanges
Duplex SS Tongue and Groove Flanges
Duplex Stainless Steel Spectacle Flanges
Duplex Steel Orifice Flanges
Duplex Stainless Exhaust Flange
Stainless Steel Duplex Plate Flange
Duplex Ring Type Joint Flange
Torque Formula of Duplex Steel Flanges
| Size in Inches |
Size in mm |
Max. Radial Projection of Imperfections |
| Serrations, Deeper Than the Bottom, mm |
Serrations, No Deeper Than the Bottom, mm |
| 1 1/2 |
40 |
1.05 |
3.00 |
| 8 |
200 |
4.05 |
8.00 |
| 10 |
250 |
4.05 |
8.00 |
| 1 |
25 |
1.05 |
3.00 |
| 3/4 |
20 |
1.05 |
3.00 |
| 1 1/4 |
32 |
1.05 |
3.00 |
| 2 |
50 |
1.05 |
3.00 |
| 14 |
350 |
4.05 |
8.00 |
| 12 |
300 |
4.05 |
8.00 |
| 16 |
400 |
4.05 |
10.00 |
| 20 |
500 |
6.00 |
12.00 |
| 18 |
450 |
6.00 |
12.00 |
| 2 1/2 |
65 |
1.05 |
3.00 |
| 3 |
80 |
1.05 |
4.05 |
| 4 |
100 |
3.00 |
6.00 |
| 3 1/2 |
90 |
3.00 |
6.00 |
| 5 |
125 |
3.00 |
6.00 |
| 6 |
150 |
3.00 |
6.00 |
| 1/2 |
15 |
1.05 |
3.00 |
| 24 |
600 |
6.00 |
12.00 |
Duplex Slip On Flanges Documentation
- Raw Material Test Reports
- Fumigation Certificates
- Heat Treatment Charts
- Material Traceability Records
- Guarantee Letter
- Commercial Invoice which includes HS Code
- Test Certificates
- Quality Assurance Plan (QAP)
Get Duplex Stainless Socket Weld Flange At Factory Price For High Pressure Applications
Duplex Steel Flanges Applications
Siddhagiri Metals is a leading Duplex Flanges Manufacturer in India, specializing in high-quality flanges that are used across a wide range of industries.
Duplex Flanges Equivalent
| STANDARD |
UNS |
WERKSTOFF NR. |
| 2205 |
S31803 / S32205 |
1.4462 |
DSS Slip-on Flange Chemical Composition
| Grade |
Carbon |
Phosphorus |
Molybdenum |
Nickel |
Nitrogen |
Sulfur |
Chromium |
Manganese |
Silicon |
Iron |
| S31803 / S32205 |
0.030 Max |
0.030 Max |
3.0 To 3.5 |
4.50 To 6.50 |
0.14 To 0.20 |
0.020 Max |
22.0 To 23.0 |
2.00 Max |
1.00 Max |
63.72 Minimum |
Duplex Blind Flange Mechanical Properties
| Grades |
Density (lb/in 3) |
Density (g/cm 3) |
Melting Point (°F) |
Melting Point (°C) |
| S31803 / S32205 |
0.285 |
7.805 |
2588 – 2669 |
1420 – 1465 |
A top-tier Duplex Flanges Supplier committed to quality assurance and long-term product value.
Physical Properties of Plate Flange
| Grade |
Density
(kg/m3) |
Elastic
Modulus (GPa) |
Electrical
Resistivity
(nΩ.m) |
Thermal
Conductivity (W/m.K) |
Mean Co-eff of Thermal
Expansion (μm/m/°C) |
Specific
Heat
0-100°C ( J/kg.K) |
| at 100°C |
at 500°C |
0-100°C |
0-315°C |
0-538°C |
| 2205 |
782 |
190 |
850 |
19 |
- |
13.7 |
14.2 |
- |
418 |
What are the best practices for surface preparation of DSS Flanges before installation?
- Cleaning the Surface
- Removing Oxidation or Rust
- Passivation
- Surface Finishing
- Deburring and Edge Treatment
- Inspection of Surface Quality
- Handling and Storage
- Gasket and Bolt Installation Preparation
Weekly Delivery of Duplex Flanges in below countries:
| Export to |
Continent |
Shipping time |
South Africa |
Africa |
25-30 Days |
Kenya |
Africa |
19 Days |
Oman |
Asia |
5 Days |
USA |
North America |
40-60 Days |
Monthly Delivery of Duplex Flanges in below countries:
| Export to |
Continent |
Shipping time |
Spain |
Europe |
30 Days |
Germany |
Europe |
20 Days |
Malaysia |
Asia |
10 Days |
Vietnam |
Asia |
10 Days |
Additional service
:
Small quantity | Custom order | hard to find items |
Sourcing from other countries
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