SA350 LF2 flanges are mostly used to connect pipes, valves and pumps. It has several grades and classes. These are corrosion resistance and are used in many other industrial sectors. A350 Lf2 Cl1 Flanges are the one which deliver excellent performance and are generally meet the demands. These are known for worldwide network of stock-keeping branches. A350 LF2 Class 1 and class 2 flanges has chemical and many other mechanical properties such as grade class, tensile strength, yield strength, elongation, hardness etc. This is used for higher temperature and thy ear also used for many other industries.
A350 Lf2 Class 2 Flange is used in ambient and higher temperature service. These are used in low temperature services. Appropriate testing and many other things are included before launching the product in the market. A350 LF2 Welding neck flange are used in many pressure parts, machine tools, pump shafts and many others. This is available in many sizes and is available in stock. This can be furnished with either a normalized and tempered condition. Blind Flange A350 LF2 is good for high strength, pressure resistance and temperature resistance. Used in applications like power plant, chemical and other industries.
A350 Lf2 Sour Service Flange is manufactured by Regal Sales Corporation as this is the leading and trust worthy one where this product is produced by our team with their extreme talent and also the product is dispatched on time. An ISO certified company with 20 years old organization and thus our name is well-known in the market.
We have a strong sales network in UAE, South Africa, Belgium, Germany, Netherlands, Egypt, Jordan, and Lebanon.
Table of Content
Size
Features
Applications
Thickness
Finishing
Testing Methods
Surface Coating
Pressure
Disadvantages
Threads type
Production process
Connections
Packaging Methods
Standard
Certification
ASTM A350 LF2 Flanges Supplier in India provides a variety of commonly used flange types.
ASTM A350 LF2 Forged Flange
A350 LF2 Plate Flange
ASTM A350 LF2 Class 1 Blind Flange
ASTM A350 LF2 Cl1 Weld Neck Flange
ASTM A350 Grade LF2 Slip On Flange
A350 Grade LF2 Socket Weld Flange
ASTM A350 Gr LF2 Threaded Flange
A350 Gr LF2 Lap Joint Flange
SA 350 LF2 SORF Flange
SA350 LF2 WNRF Flange
A350 Carbon Steel LWNRF Flange
A350 Gr LF2 Cl 1 Orifice Flange
A350 Gr LF2 Cl1 RTJ Flange
A350 LF2 Cl 1 BLRF Flange
A350 Grade LF2 Reducing Flange
ASTM A350 Grade LF2 Raised Face Flange

| Nominal Size | 1 | 1 1/2 | 2 | 1 1/4 | 2 1/2 | 3 1/2 | 4 | 3 | 5 | 8 | 10 | 6 | 14 | 16 | 12 | 18 | 24 | 30** | 20 | 36** |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Outside Diameter (OD) | 4.25 | 5 | 6 | 4.68 | 7 | 8.5 | 9 | 7.5 | 10 | 13.5 | 16 | 11 | 21 | 23.5 | 19 | 25 | 32 | 38.75 | 27.5 | 46 |
| Bore Diameter (B) | 1.38 | 1.97 | 2.46 | 1.72 | 2.97 | 4.1 | 4.6 | 3.6 | 5.69 | 8.75 | 10.92 | 6.75 | 14.19 | 16.19 | 12.92 | 18.2 | 24.25 | 30.25 | 20.25 | 36.25 |
| No. of Bolt Holes | 4 | 4 | 4 | 4 | 4 | 8 | 8 | 4 | 8 | 8 | 12 | 8 | 12 | 16 | 12 | 16 | 20 | 28 | 20 | 32 |
| Bolt Hole Diam. | 0.625 | 0.625 | 0.75 | 0.625 | 0.75 | 0.75 | 0.75 | 0.75 | 0.875 | 0.875 | 1 | 0.875 | 1.125 | 1.125 | 1 | 1.25 | 1.375 | 1.375 | 1.25 | 1.625 |
| Bolt Circle (BC) | 3.13 | 3.88 | 4.75 | 3.5 | 5.5 | 7 | 7.5 | 6 | 8.5 | 11.75 | 14.25 | 9.5 | 18.75 | 21.25 | 17 | 22.75 | 29.5 | 36 | 25 | 42.75 |
| Thickness (T) | 0.563 | 0.688 | 0.75 | 0.625 | 0.875 | 0.938 | 0.938 | 0.938 | 0.938 | 1.125 | 1.188 | 1 | 1.375 | 1.438 | 1.25 | 1.562 | 1.875 | 2.125 | 1.688 | 2.375 |
| Hub Length (L) | 0.688 | 0.875 | 1 | 0.813 | 1.125 | 1.25 | 1.312 | 1.188 | 1.438 | 1.75 | 1.938 | 1.562 | 2.25 | 2.5 | 2.188 | 2.688 | 3.25 | 3.5 | 2.875 | 3.75 |
| Hub Diam. (H) | 1.938 | 2.563 | 3.063 | 2.312 | 3.563 | 4.812 | 5.312 | 4.25 | 6.438 | 9.688 | 12 | 7.562 | 15.75 | 18 | 14.375 | 19.875 | 26.125 | 32.75 | 22 | 39.25 |
| Lap Radius ( R ) | 0.13 | 0.25 | 0.31 | 0.19 | 0.31 | 0.38 | 0.44 | 0.38 | 0.44 | 0.5 | 0.5 | 0.5 | 0.5 | 0.5 | 0.5 | 0.5 | 0.5 | 0.5 | 0.5 | 0.5 |
| Approx. Weight (lbs) | 2 | 3 | 5 | 3 | 7 | 11 | 13 | 8 | 15 | 30 | 42 | 18 | 90 | 98 | 64 | 125 | 212 | 305 | 160 | 440 |
ASTM A350 LF2 Flanges Manufacturer in India offers a Excellent weight chart for flanges

| Standard | AS4087 | AS 2129 Flange | ASTM B16.5 | ISO 7005 (DIN) Flange | ||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Class | PN14 | Table C | Table E | Table F | Table D | Table H | Table J | ASTM 150 | ASTM 600 | ASTM 900 | ASTM 300 | ASTM 1500 | PN6 | PN16 | PN20 | PN10 | PN25 | PN40 |
| Diameter | 95 | 95 | 95 | 95 | 95 | 114 | 114 | 89 | 95 | 121 | 95 | 121 | 80 | 95 | 90 | 95 | 95 | 95 |
| Bolt Circle Diameter | 67 | 67 | 67 | 67 | 67 | 83 | 83 | 60 | 67 | 83 | 67 | 83 | 55 | 65 | 60.5 | 65 | 65 | 65 |
| Number of Bolts | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 |
| Bolt Size | M12 | 13 | 13 | 13 | 13 | 16 | 16 | 13 | 13 | 19 | 13 | 19 | M10 | M12 | M14 | M12 | M12 | M12 |
| Diameter of Bolt Hole | 14 | 14 | 14 | 14 | 14 | 17 | 17 | 16 | 16 | 22 | 16 | 22 | 11 | 14 | 16 | 14 | 14 | 14 |
| TEMP°C | -29 TO 38 | 100 | 150 | 50 | 200 | 300 | 325 | 250 | 350 | 425 | 450 | 375 | 400 | 500 | 475 | 538 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 150 | 19.6 | 17.7 | 15.8 | 19.2 | 13.8 | 10.2 | 9.3 | 12.1 | 8.4 | 5.5 | 4.6 | 7.4 | 6.5 | 2.8 | 3.7 | 1.4 |
| 400 | 68.1 | 62.1 | 60.1 | 66.8 | 58.4 | 53.1 | 51.6 | 55.9 | 50.1 | 38.4 | 30.7 | 48.5 | 46.3 | 15.7 | 23.2 | 7.9 |
| 300 | 51.1 | 46.6 | 45.1 | 50.1 | 43.8 | 39.8 | 38.7 | 41.9 | 37.6 | 28.8 | 23 | 36.4 | 34.7 | 11.8 | 17.4 | 5.9 |
| 600 | 102.1 | 93.2 | 90.2 | 100.2 | 87.6 | 79.6 | 77.4 | 83.9 | 75.1 | 57.5 | 46 | 72.7 | 69.4 | 23.5 | 34.9 | 11.8 |
| 1500 | 255.3 | 233 | 225.4 | 250.6 | 219 | 199.1 | 193.6 | 209.7 | 187.8 | 143.8 | 115 | 181.8 | 173.6 | 58.8 | 87.2 | 29.5 |
| 900 | 153.2 | 139.8 | 135.2 | 150.4 | 131.4 | 119.5 | 116.1 | 125.8 | 112.7 | 86.3 | 69 | 109.1 | 104.2 | 35.3 | 52.3 | 17.7 |
| 2500 | 425.5 | 388.3 | 375.6 | 417.7 | 365 | 331.8 | 322.6 | 349.5 | 313 | 239.7 | 191.7 | 303.1 | 289.3 | 97.9 | 145.3 | 49.2 |
| Process | Temperature Range |
|---|---|
| Normalization | 860°C to 940°C (1580°F to 1725°F) |
| Tempering | 540°C to 680°C (1000°F to 1250°F) |
| Stress Relieving | 540°C to 650°C (1000°F to 1200°F) |
| Charpy Impact Test | -46°C or -50°F (test temperature) |
UNS
N05500
DIN
TSTE 355 DIN 18103
ASTM A350 LF2 Flanges Manufacturer in India provides accurate chemical composition of flanges.
| Property | Value |
|---|---|
| Density | 7.85 g/cm³ |
| Hardness(Rockwell B h) | ≤ 95 |
| Modulus of Elasticity | 210 GPa |
| Coefficient of Thermal Expansion | 12 x 10^-6 /°C |
| Thermal Conductivity | 50 W/m·K |
Yield Strength
36 Ksi, 250 Mpa
Tensile Strength
70-95 ksi, 485-655 MPa
Melting Point
1480 °C
Elongation
30 %
| Temperature (°C) | Thermal Conductivity (W/m·K) |
|---|---|
| 20 | 43.0 |
| 100 | 45.0 |
| Property | ASTM A105 | ASTM A350 LF2 |
|---|---|---|
| Material | Carbon steel | Low-temp carbon steel |
| Temp | Up to 800°F (427°C) | Down to -50°F (-46°C) |
| Use | High-temp industries | Low-temp applications |
Yes, treatments like hot-dip galvanization, epoxy coating, or PTFE lining can be applied to enhance corrosion resistance. Additional Treatments Provided as follows:
Materials
