SMO 254 Flanges are manufactured in large diameter sizes of ½ inch - 48 inch. Standard in use when coming to the dimensions of the pipe varies; these are ASME, DIN, ANSI and different international bodies. The UNS S31254 Pipe Flange is manufactured in different types with screwed, forged, plate and threaded flanges. The functional types include slip on flanges, welded neck flanges, lap joint flanges, orifice flanges, and blind flanges. The blind flanges comes in other types such as the SMO 254 Spectacle Blind Flange as well.
SMO 254 Flanges Manufacturer in India, There are ring type joint , flat face, raised face types of flanges from pressure class 150 to 2500. The 6mo Plate Flange and other flanges are manufactured from a chromium, nickel, molybdenum alloy. That has 17 nickel, 19 chromium and 6 molybdenum together with carbon, silicon, manganese and sulfur, copper. Other types of flanges like the 254 SMO Slip on Flange are excellent corrosion resistant because of the presence of the composition in it. The flanges are also stronger than the ordinary stainless steel flanges with 650MPa minimum tensile strength, 300MPa minimum yield strength and 35% elongation rate.
The UNS S31254 Weld Neck Flange is preferred in welding applications. SMO 254 Flanges Manufacturer in India, These flanges can hold the pipe in place during welding. The material has up to 1390 degrees Celsius melting point so that it could be used in high temperature and high pressure applications such as power generation, heat exchangers, boiler and petrochemical industrial applications.
We are a globally recognized SMO 254 Flanges Supplier in India, providing exceptional service to Netherlands, with delivered areas spanning Malaysia, Vietnam, and Kuwait.
Table of Content
254 SMO Flange
UNS S31254 SMO Flange
6MO Plate Flange
SMO 254 Plate Flange Sizes
Advantages
Features
Disadvantages
Surface Finish
International standards
Wall Thickness
Logistics
Available Packaging
Pressure class
Sealing Types
Types of Threading
A182 Gr F44 Blind Flange
ASTM A182 Gr F44 LWNRF Flange
SMO 254 Threaded Flange
A182 F44 Socket Weld Flange
UNS S31254 F44 Reducing Flange
ASTM A182 F44 Raised Face Flange
Sa 182 F44 WNRF Flange
Sa182 F44 Slip on Flange
6Moly RTJ Flange
254 SMO Pipe Flanges
Alloy 254 Forged Flange
6 Moly Alloy BLRF Flange
Alloy 254 SMO Orifice Flange
SMO Metal Lap Joint Flange
254 SMO Stainless Steel Plate Flange
SMO Steel Weld Neck Flange
| Standard | Size Of Bolt | Class | Diameter | No of Bolts | Bolt Circle Dia | Dia of Bolt Hole |
|---|---|---|---|---|---|---|
| AS 2129 Flange | 13 | Table C | 95 | 4 | 67 | 14 |
| 16 | Table H | 114 | 4 | 83 | 17 | |
| 13 | Table E | 95 | 4 | 67 | 14 | |
| 13 | Table D | 95 | 4 | 67 | 14 | |
| 13 | Table F | 95 | 4 | 67 | 14 | |
| 16 | Table J | 114 | 4 | 83 | 17 | |
| AS4087 | M12 | PN14 | 95 | 4 | 67 | 14 |
| ISO 7005 (DIN) Flange | M10 | PN6 | 80 | 4 | 55 | 11 |
| M12 | PN25 | 95 | 4 | 65 | 14 | |
| M12 | PN16 | 95 | 4 | 65 | 14 | |
| M12 | PN10 | 95 | 4 | 65 | 14 | |
| M14 | PN20 | 90 | 4 | 60.5 | 16 | |
| M12 | PN40 | 95 | 4 | 65 | 14 | |
| ANSI B16.5 | 13 | ANSI 150 | 89 | 4 | 60 | 16 |
| 13 | ANSI 600 | 95 | 4 | 67 | 16 | |
| 13 | ANSI 300 | 95 | 4 | 67 | 16 | |
| 19 | ANSI 900 | 121 | 4 | 83 | 22 | |
| 19 | ANSI 1500 | 121 | 4 | 83 | 22 |
| Temp., °C | 254 SMO Flanges Pressure Ratings , bar | ||||||
|---|---|---|---|---|---|---|---|
| 600 | 300 | 150 | 400 | 1500 | 900 | 2500 | |
| -29 ~ 38 | 103.4 | 51.7 | 20.0 | 68.9 | 258.6 | 155.1 | 430.9 |
| 375 | 77.6 | 38.9 | 7.4 | 51.6 | 194.1 | 116.5 | 323.2 |
| 425 | 70.0 | 35.2 | 5.5 | 46.5 | 175.1 | 105.1 | 291.6 |
| 350 | 80.4 | 40.3 | 8.4 | 53.6 | 201.1 | 120.7 | 335.3 |
| 200 | 97.2 | 48.6 | 13.8 | 64.8 | 243.4 | 145.8 | 405.4 |
| 325 | 82.6 | 41.4 | 9.3 | 55.0 | 206.6 | 124.0 | 344.3 |
| 475 | 63.4 | 31.7 | 3.7 | 42.3 | 158.2 | 95.1 | 263.9 |
| 550 | 27.9 | 13.9 | - | 18.6 | 69.7 | 41.8 | 116.2 |
| 50 | 103.4 | 51.7 | 19.5 | 68.9 | 258.6 | 155.1 | 430.9 |
| 450 | 67.7 | 33.7 | 4.6 | 45.1 | 169.0 | 101.4 | 281.8 |
| 100 | 103.0 | 51.5 | 17.7 | 68.7 | 257.6 | 154.6 | 429.4 |
| 575 | 18.9 | 9.4 | - | 12.6 | 47.2 | 28.3 | 78.6 |
| 150 | 100.3 | 50.3 | 15.8 | 66.8 | 250.8 | 150.6 | 418.2 |
| 500 | 56.5 | 28.2 | 2.8 | 37.6 | 140.9 | 84.7 | 235.0 |
| 538 | 33.1 | 16.5 | 1.4 | 22.1 | 82.7 | 49.6 | 137.9 |
| 250 | 92.7 | 46.30 | 12.1 | 61.7 | 231.8 | 139.0 | 386.2 |
| 600 | 13.3 | 6.6 | - | 8.9 | 33.2 | 19.9 | 55.3 |
| 300 | 85.7 | 42.9 | 10.2 | 57.0 | 214.4 | 128.6 | 357.1 |
| 625 | 10.3 | 5.1 | - | 6.8 | 25.7 | 15.4 | 42.8 |
| 400 | 73.3 | 36.5 | 6.5 | 48.9 | 183.1 | 109.8 | 304.9 |
| 650 | 9.5 | 4.7 | - | 6.3 | 23.6 | 14.2 | 39.4 |
| Pipe Size (in.) | Dimensions Of SMO 254 Flange | ||||
|---|---|---|---|---|---|
| Number of Bolts | Diameter of Flange (inches) | Bolt Holes Diameter (inches) | Bolts Diameter (inches) | Bolt Circle (inches) | |
| 3/4 | 4 | 3-7/8 | 0.62 | 1/2 | 2-3/4 |
| 1 | 4 | 4-1/4 | 0.62 | 1/2 | 3-1/8 |
| 3 | 4 | 7-1/2 | 0.75 | 5/8 | 6 |
| 1/2 | 4 | 3-1/2 | 0.62 | 1/2 | 2-3/8 |
| 2 | 4 | 6 | 0.75 | 5/8 | 4-3/4 |
| 3-1/2 | 8 | 8-1/2 | 0.75 | 5/8 | 7 |
| 4 | 8 | 9 | 0.75 | 5/8 | 7-1/2 |
| 10 | 12 | 16 | 1 | 7/8 | 14-1/4 |
| 18 | 16 | 25 | 1.25 | 1-1/8 | 22-3/4 |
| 1-1/2 | 4 | 5 | 0.62 | 1/2 | 3-7/8 |
| 8 | 8 | 13-1/2 | 0.88 | 3/4 | 11-3/4 |
| 1/4 | 4 | 3-3/8 | 0.62 | 1/2 | 2-1/4 |
| 1-1/4 | 4 | 4-5/8 | 0.62 | 1/2 | 3-1/2 |
| 12 | 12 | 19 | 1 | 7/8 | 17 |
| 6 | 8 | 11 | 0.88 | 3/4 | 9-1/2 |
| 14 | 12 | 21 | 1.12 | 1 | 18-3/4 |
| 5 | 8 | 10 | 0.88 | 3/4 | 8-1/2 |
| 20 | 20 | 27-1/2 | 1.25 | 1-1/8 | 25 |
| 2-1/2 | 4 | 7 | 0.75 | 5/8 | 5-1/2 |
| 16 | 16 | 23-1/2 | 1.12 | 1 | 21-1/4 |
| 24 | 20 | 32 | 1.38 | 1-1/4 | 29-1/2 |
| DN (inch) | Dimension | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1500 LBS | 600 LBS | 400 LBS | 300 LBS | 900 LBS | 125 LBS 150 LBS | ||||||||
| mm | inch | mm | inch | mm | inch | mm | inch | mm | inch | mm | inch | ||
| 1 1/4 | D1 | 3 7/8 | 98.4 | 3 7/8 | 98.4 | 3 7/8 | 98.4 | 3 1/2 | 88.9 | 4 3/8 | 111 | 4 3/8 | 111 |
| d | 3/4 | 19 | 3/4 | 19 | 3/4 | 19 | 5/8 | 15.9 | 1 | 25.4 | 1 | 25.4 | |
| b | 19 | 3/4 | 20.6 | 13/16 | 20.6 | 13/16 | 28.6 | 1 1/8 | 28.6 | 1 1/8 | 15.9 | 5/8 | |
| A | 159 | 6 1/4 | 133.4 | 5 1/4 | 133.4 | 5 1/4 | 133.4 | 5 1/4 | 159 | 6 1/4 | 117.5 | 4 5/8 | |
| n | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | |
| D2 | 63.5 | 2 1/2 | 63.5 | 2 1/2 | 63.5 | 2 1/2 | 63.5 | 2 1/2 | 63.5 | 2 1/2 | 63.5 | 2 1/2 | |
| 3/4 | D1 | 3 1/4 | 82.5 | 3 1/4 | 82.5 | 3 1/4 | 82.5 | 2 3/4 | 69.8 | 3 1/2 | 88.9 | 3 1/2 | 88.9 |
| d | 22.2 | 7/8 | 19 | 3/4 | 19 | 3/4 | 19 | 3/4 | 22.2 | 7/8 | 15.9 | 5/8 | |
| b | 1/2 | 12.7 | 5/8 | 15.9 | 5/8 | 15.9 | 5/8 | 15.9 | 1 | 25.4 | 1 | 25.4 | |
| A | 130 | 5 1/8 | 117.5 | 4 5/8 | 117.5 | 4 5/8 | 117.5 | 4 5/8 | 130 | 5 1/8 | 98.4 | 3 7/8 | |
| n | - | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | |
| b | 5/8 | 15.9 | 5/8 | 15.9 | 5/8 | 15.9 | 1/2 | 12.7 | 1 | 25.4 | 1 | 25.4 | |
| 2 | D1 | 5 | 127 | 5 | 127 | 5 | 127 | 4 3/4 | 121 | 6 1/2 | 165.1 | 6 1/2 | 165.1 |
| d | 3/4 | 19 | 3/4 | 19 | 3/4 | 19 | 3/4 | 19 | 1 | 25.4 | 1 | 25.4 | |
| b | 22.2 | 7/8 | 25.4 | 1 | 25.4 | 1 | 38.1 | 1 1/2 | 38.1 | 1 1/2 | 19 | 3/4 | |
| A | 215.9 | 8 1/2 | 165.1 | 6 1/2 | 165.1 | 6 1/2 | 165.1 | 6 1/2 | 215.9 | 8 1/2 | 152.4 | 6 | |
| n | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 4 | 4 | |
| D2 | 92.1 | 3 5/8 | 92.1 | 3 5/8 | 92.1 | 3 5/8 | 92.1 | 3 5/8 | 92.1 | 3 5/8 | 92.1 | 3 5/8 | |
| 1 1/2 | D1 | 4 1/2 | 114 | 4 1/2 | 114 | 4 1/2 | 114 | 3 7/8 | 4 | 4 7/8 | 124 | 4 7/8 | 124 |
| d | 7/8 | 22.2 | 7/8 | 22.2 | 7/8 | 22.2 | 5/8 | . 15.9 | 1 1/8 | 28.6 | 1 1/8 | 28.6 | |
| b | 20.6 | 13/16 | 22.2 | 7/8 | 22.2 | 7/8 | 31.8 | 1 1/4 | 31.8 | 1 1/4 | 17.5 | 11/16 | |
| A | 6 1/8 | 155.6 | 6 1/8 | 155.6 | 6 1/8 | 155.6 | 5 | 127 | 7 | 177.8 | 7 | 177.8 | |
| n | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | |
| D2 | 73 | 2 7/8 | 73 | 2 7/8 | 73 | 2 7/8 | 73 | 2 7/8 | 73 | 2 7/8 | 73 98 | 2 7/8 | |
| 1 | D1 | 3 1/2 | 88.9 | 3 1/2 | 88.9 | 3 1/2 | 88.9 | 3 1/8 | 79.4 | 4 | 102 | 4 | 102 |
| d | 3/4 | 19 | 3/4 | 19 | 3/4 | 19 | 5/8 | 15.9 | 1 | 25.4 | 1 | 25.4 | |
| b | 17.5 | 11/16 | 17.5 | 11/16 | 17.5 | 11/16 | 28.6 | 1 1/8 | 28.6 | 1 1/8 | 14.3 | 9/16 | |
| A | 149.2 | 5 7/8 | 123.8 | 4 7/8 | 123.8 | 4 7/8 | 123.8 | 4 7/8 | 149.2 | 5 7/8 | 108 | 4 1/4 | |
| n | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | |
| D2 | 50.8 | 2 | 50.8 | 2 | 50.8 | 2 | 50.8 | 2 | 50.8 | 2 | 50.8 | 2 | |
| 2 1/2 | D1 | 5 7/8 | 149.2 | 5 7/8 | 149.2 | 5 7/8 | 149.2 | 5 1/2 | 139.7 | 7 1/2 | 190.5 | 7 1/2 | 190.5 |
| d | 7/8 | 22.2 | 7/8 | 22.2 | 7/8 | 22.2 | 3/4 | 19 | 1 1/8 | 28.6 | 1 1/8 | 28.6 | |
| b | 25.4 | 1 | 28.6 | 1 1/8 | 28.6 | 1 1/8 | 41.3 | 1 5/8 | 41.3 | 1 5/8 | 22.2 | 7/8 | |
| A | 244 | 9 5/8 | 190.5 | 7 1/2 | 190.5 | 7 1/2 | 190.5 | 7 1/2 | 244 | 9 5/8 | 177.8 | 7 | |
| n | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 4 | 4 | |
| D2 | 105 | 4 1/8 | 104.8 | 4 1/8 | 104.8 | 4 1/8 | 104.8 | 4 1/8 | 105 | 4 1/8 | 104.8 | 4 1/8 | |
| 1/2 | D1 | 2 5/8 | 66.7 | 2 5/8 | 66.7 | 2 5/8 | 66.7 | 2 3/8 | 60.3 | 3 1/4 | 82.6 | 3 1/4 | 82.6 |
| d | 22.2 | 7/8 | 15.9 | 5/8 | 15.9 | 5/8 | 15.9 | 5/8 | 22.2 | 7/8 | 15.9 | 5/8 | |
| b | 7/16 | 11.1 | 9/16 | 14.3 | 9/16 | 14.3 | 9/16 | 14.3 | 7/8 | 22.2 | 7/8 | 22.2 | |
| A | 121 | 4 3/4 | 95.2 | 3 3/4 | 95.2 | 3 3/4 | 95.2 | 3 3/4 | 121 | 4 3/4 | 88.9 | 3 1/2 | |
| n | - | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | |
| D2 | 34.9 | 1 3/8 | 34.9 | 1 3/8 | 34.9 | 1 3/8 | 34.9 | 1 3/8 | 34.9 | 1 3/8 | 34.9 | 1 3/8 | |
WERKSTOFF NR.
1.4547
JIS
–
UNS
S31254
EN
X1CrNiMoCuN20-18-7
| Property | Value |
|---|---|
| Thermal Conductivity | 13.5 W/m·K (at 20°C) |
| Young’s Modulus | 200 x 103 N/mm2 |
| Specific Electrical Resistance | 0.85 µO.m |
| Density | 8000 Kg.m-1 |
| Magnetic Permeability | 1.05 |
| Specific Heat | 500 J.Kg-1.°K-1 (at 20°C) |
Melting Point
1320-1390 ℃
Yield Strength
Psi – 43500 , MPa – MPa
Elongation
35 %
Tensile Strength
Psi – 98600 , MPa – 680
| Property | SMO 254 Z | SMO 254 |
|---|---|---|
| Cost | Higher Cost | Low cost |
| Composition | Higher Mo (7-7.5%) and N | 6-6.5% Mo, 18-20% Ni |
| Applications | desalination plants, petrochemical | offshore industries, Marine, |
| Corrosion Resistance | Excellent Resistance | Superior In Chloride-rich Environments |
| Stress Corrosion Resistant | Superior | Good |
Materials
