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We specialize in the precision manufacturing of industrial-grade flanges and fittings made from nickel-based alloys (such as Inconel®, Hastelloy®, and Monel®) and other specialty metals. In the face of extreme temperatures, high pressures, and highly corrosive media, our engineering team will collaborate with you strategically, from material selection to final delivery, to ensure that every flange, elbow, tee, or joint precisely meets the most stringent technical specifications. We deliver not just parts, but a commitment to the long-term stability and safety of your critical systems. Contact our engineers today to receive a customized technical solution and quote tailored to your project.
1.Full Material Coverage
1.Outstanding Corrosion Resistance
Made from high-grade nickel-based materials, such as Hastelloy and Inconel, these flanges offer exceptional resistance to corrosion from harsh media, including acids, alkalis, and high-temperature oxides, ensuring long-term system safety.
2.Excellent High-Temperature Strength
Maintains extremely high mechanical strength and creep resistance even in high-temperature environments, offering stable and reliable performance suitable for extreme conditions in industries such as energy and chemicals.
3.Precision Manufacturing and Quality
Strictly adhering to standards such as ASME, precision machining ensures the accuracy of flange sealing surfaces and dimensions, achieving zero-leakage sealing.
4.Professional Selection and Rapid Response
Providing professional material and operating condition matching solutions, and leveraging inventory and flexible production systems to meet urgent delivery requirements for critical projects.
Common Materials: ASTM B564 UNS N06600 (Inconel 600), N06625 (Inconel 625), N10276 (Hastelloy C-276)
Units: mm (dimensions) | MPa (pressure) | kg (weight)
|
Flange Type |
DN |
NPS |
Outer Diameter (OD) ±Tol |
Bolt Circle (PCD) ±Tol |
Thickness (Thk) ±Tol |
Bolt Holes (Qty×Dia) |
Neck Height (H) ±Tol |
RF Face Height ±Tol |
Pressure Rating |
Working Press. (MPa) |
Approx. Weight (kg) |
|
WN Class 150 |
50 |
2 |
165 ±0. 8 |
125 ±0. 5 |
16 ±0. 3 |
4×19 |
45 ±0. 5 |
2. 0 ±0. 1 |
Class 150 |
1. 96 |
2. 3 |
|
WN Class 300 |
80 |
3 |
200 ±1. 0 |
160 ±0. 6 |
22 ±0. 4 |
8×19 |
52 ±0. 5 |
2. 5 ±0. 1 |
Class 300 |
5. 10 |
4. 5 |
|
SO Class 600 |
40 |
1½ |
152 ±0. 6 |
108 ±0. 4 |
30 ±0. 5 |
4×19 |
42 ±0. 5 |
3. 0 ±0. 2 |
Class 600 |
10. 20 |
3. 2 |
|
BL Class 900 |
50 |
2 |
222 ±0. 8 |
165 ±0. 5 |
43 ±0. 8 |
8×22 |
- |
- |
Class 900 |
15. 30 |
7. 8 |
|
LWN Series B |
300 |
12 |
485 ±1. 8 |
432 ±1. 0 |
38 ±0. 8 |
12×29 |
95 ±1. 0 |
3. 0 ±0. 2 |
Class 150 |
1. 96 |
35. 0 |
|
PL PN16 |
100 |
4 |
220 ±1. 2 |
180 ±0. 6 |
20 ±0. 4 |
8×22 |
56 ±0. 5 |
2. 0 ±0. 1 |
PN16 |
1. 60 |
5. 1 |
|
ORF PN40 |
65 |
2½ |
185 ±0. 8 |
145 ±0. 5 |
28 ±0. 5 |
4×22 |
48 ±0. 5 |
3. 0 ±0. 2 |
PN40 |
4. 00 |
4. 0 |
|
FF Class 1500 |
100 |
4 |
355 ±1. 2 |
279 ±0. 8 |
57 ±1. 0 |
8×29 |
70 ±0. 8 |
7. 1 ±0. 2 |
Class 1500 |
25. 50 |
19. 5 |
|
TH PN100 |
32 |
1¼ |
165 ±0. 6 |
117 ±0. 4 |
35 ±0. 6 |
4×22 |
38 ±0. 5 |
3. 0 ±0. 2 |
PN100 |
10. 00 |
3. 5 |
|
SW Class 2500 |
25 |
1 |
136 ±0. 6 |
92. 1 ±0. 4 |
43 ±0. 8 |
4×19 |
35 ±0. 5 |
7. 1 ±0. 2 |
Class 2500 |
42. 50 |
4. 1 |
|
Parameter |
Tolerance Range (mm) |
Applicable Standard |
|
Outer Diameter (OD) |
±(0. 1%×OD +0. 5) ≤ ±2. 0 |
ASME B16. 5 Table 5 |
|
Bolt Circle (PCD) |
±0. 25 (DN≤100) / ±0. 5 (DN>100) |
EN 1092-1 Annex D |
|
Thickness (Thk) |
+2. 0/-0. 0 (PN≤40) / +3. 0/-0. 0 (High Pressure) |
ASME B16. 5 §6. 4. 4 |
|
Neck Height (H) |
±1. 0 |
DIN 2633 Type 11 |
|
RF Face Height |
±0. 1 (Ra≤3. 2μm) |
MSS SP-44 §7. 3 |
|
Abbr. |
Full Name |
Typical Application in Nickel Alloys |
|
WN |
Welding Neck Flange |
High-temperature/pressure reactors, furnace tubing |
|
SO |
Socket Weld Flange |
Small-bore lines in chemical processing, analyzers |
|
BL |
Blind Flange |
Isolation of vessels in corrosive service |
|
LWN |
Long Welding Neck Flange |
Column and pressure vessel connections |
|
PL |
Plate Flat Flange |
Low-pressure, high-corrosion environments |
|
ORF |
Raised Face Flange |
Standard connection for ASME class systems |
|
FF |
Flat Face Flange |
Connections to cast equipment, brittle linings |
|
TH |
Threaded Flange |
Air-cooled heat exchangers, instrumentation |
|
SW |
Screwed Flange |
Non-welded connections in maintenance areas |
|
Material (UNS) |
Common Name |
Key Properties |
Derating Factor at Temperature: |
|
|
|
|
|
|
|
200°C |
400°C |
600°C |
800°C |
|
N06600 |
Inconel 600 |
Oxidation resistance, strength |
0. 97 |
0. 90 |
0. 82 |
0. 70 |
|
N06625 |
Inconel 625 |
Pitting/crevice resistance, strength |
0. 98 |
0. 95 |
0. 90 |
0. 85 |
|
N10276 |
Hastelloy C-276 |
Excellent chloride resistance |
0. 99 |
0. 97 |
0. 94 |
0. 88 |
|
N08825 |
Incoloy 825 |
Sulfuric/phosphoric acid resistance |
0. 96 |
0. 89 |
0. 80 |
N/A |
|
N04400 |
Monel 400 |
Excellent hydrofluoric acid resistance |
0. 95 |
0. 85 |
0. 75 |
N/A |
Note 1: Actual maximum allowable working pressure (MAWP) = Tabulated pressure × derating factor. Consult ASME B31. 3 for detailed calculations.
Note 2: Weights are approximate and vary based on the specific gravity of the nickel alloy (e. g. , N10276 is denser than N06600).
If you are interested in our products or you wanna make and customize products, please feel free to contact us.
Such as carbon steel, alloy steel, stainless steel, etc., commonly used to manufacture pipe parts, flanges, tees, and elbows.
High-temp/corrosion resistance. Critical in aerospace/chemical processing. Used for reactor tubes, valves, and flanges.
Extreme corrosion resistance (acids/halogens). Essential for harsh chemical/petrochemical environments. Made into reactors, exchanger tubes.
Superior seawater corrosion/biofouling resistance. Key for marine/offshore/desalination. Common in condenser/seawater pipes and fittings.
Excellent electrical/thermal conductivity, ductility, and corrosion resistance. Widely used in electrical wiring, heat exchangers, roofing, and plumbing.
An alloy of copper and zinc, known for its good machinability and corrosion resistance, is commonly used for manufacturing valves, pipes, and other components.
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