| Type | Sizes | Material |
|---|---|---|
| Socket Weld |
|
ASTM A350 LF2 |
| Pressure Rating | Origin | Classes |
| Class 150 to Class 2500 | Indian / Japan / USA / Korean | Class 1 and Class 2 |
| Test Certificates | Face Types | ASME/ANSI |
|
|
|
ASTM A350 LF2 socket weld flanges
A350 LF2 socket weld flange
SA 350 LF2 socket weld Flange
ASTM A350 Gr LF2 socket weld Flange
ASTM A350 LF2 Class 1 socket weld Flange
SA 350 Gr LF2 SWF flange
| Normal Pipe Size | I.D. | Raised Face (RF) | O.D. | FF Thickness (T2) | ID 2* | Bolt Circle (BC) | D | RF (R) | RF Thickness (T) | T1 | Bolt Holes (B) | H | No. of Bolt Holes |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1/2" | 0.88" | .063" | 3.50" | .56" | 0.62" | 2.38" | .38" | 1.38" | .62" | .38" | .62" | 1.19" | 4 |
| 3/4" | 1.09" | .063" | 3.88" | .56" | 0.82" | 2.75" | .44" | 1.69" | .62" | .44" | .62" | 1.50" | 4 |
| 1" | 1.36" | .063" | 4.25" | .63" | 1.05" | 3.12" | .50" | 2.00" | .69" | .50" | .62" | 1.94" | 4 |
| 1-1/4" | 1.70" | .063" | 4.62" | .75" | 1.38" | 3.50" | .56" | 2.50" | .81" | .56" | .62" | 2.31" | 4 |
| 1-1/2" | 1.97" | .063" | 5.00" | .82" | 1.61" | 3.88" | .62" | 2.88" | .88" | .62" | .62" | 2.56" | 4 |
| 2" | 2.44" | .063" | 6.00" | .94" | 2.07" | 4.75" | .69" | 3.62" | 1.00" | .69" | .75" | 3.06" | 4 |
| 2-1/2" | 2.94" | .063" | 7.00" | 1.06" | 2.47" | 5.50" | .75" | 4.12" | 1.12" | .82" | .75" | 3.56" | 4 |
| 3" | 3.57" | .063" | 7.50" | 1.13" | 3.07" | 6.00" | .81" | 5.00" | 1.19" | .88" | .75" | 4.25" | 4 |
| 3-1/2" | 4.07" | .063" | 8.50" | 1.19" | 3.55" | 7.00" | .88" | 5.50" | 1.25" | .88" | .75" | 4.81" | 8 |
| 4" | 4.57" | .063" | 9.00" | 1.25" | 4.03" | 7.50" | .94" | 6.19" | 1.31" | .88" | .75" | 5.31" | 8 |
| 5" | 5.66" | .063" | 10.00" | 1.38" | 5.05" | 8.50" | .94" | 7.31" | 1.44" | .88" | .88" | 6.44" | 8 |
| 6" | 6.72" | .063" | 11.00" | 1.50" | 6.07" | 9.50" | 1.06" | 8.50" | 1.56" | .94" | .88" | 7.56" | 8 |
| 8" | 8.72" | .063" | 13.50" | 1.69" | 7.98" | 11.75" | 1.25" | 10.62" | 1.75" | 1.06" | .88" | 9.69" | 8 |
| 10" | 10.88" | .063" | 16.00" | 1.88" | 10.02" | 14.25" | 1.31" | 12.75" | 1.94" | 1.13" | 1.00" | 12.00" | 12 |
| 12" | 12.88" | .063" | 19.00" | 2.13" | 12.00" | 17.00" | 1.56" | 15.00" | 2.19" | 1.19" | 1.00" | 14.38" | 12 |
| 14" | 14.14" | .063" | 21.00" | 2.19" | 13.25" | 18.75" | 1.63" | 16.25" | 2.25" | 1.32" | 1.12" | 15.75" | 12 |
| 16" | 16.16" | .063" | 23.50" | 2.44" | 15.25" | 21.25" | 1.75" | 18.50" | 2.50" | 1.38" | 1.12" | 18.00" | 16 |
| 18" | 18.18" | .063" | 25.00" | 2.63" | 17.25" | 22.75" | 1.94" | 21.00" | 2.69" | 1.50" | 1.25" | 19.88" | 16 |
| 20" | 20.20" | .063" | 27.50" | 2.83" | 19.25" | 25.00" | 2.13" | 23.00" | 2.88" | 1.63" | 1.25" | 22.00" | 20 |
| 22" | 22.22" | .063" | 29.50" | 3.07" | 21.25" | 27.25" | 2.38" | 25.25" | 3.13" | 1.75" | 1.38" | 24.25" | 20 |
| 24" | 24.25" | .063" | 32.00" | 3.19" | 23.25" | 29.50" | 2.50" | 27.25" | 3.25" | 1.82" | 1.38" | 26.12" | 20 |
| Size in Inch | Size in mm | Outer Dia. | Hub OD | Flange Thick. | RF Dia. | Flange Length | Socket Depth | RF Height | Socket Bore | PCD | RF Stud Length | Bolt Size UNC | ISO Stud Size | No of Bolts | Hole Size | Weight in kg |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| A | C | B | E | D | G | F | J | H | ||||||||
| 1/2 | 15 | 95 | 38 | 14.3 | 34.9 | 22 | 10 | 7 | 22.2 | 66.7 | 75 | 1/2 | M14 | 4 | 5/8 | 1.3 |
| 3/4 | 20 | 115 | 48 | 15.9 | 42.9 | 25 | 11 | 7 | 27.7 | 82.6 | 90 | 5/8 | M16 | 4 | 3/4 | 1.4 |
| 1 | 25 | 125 | 54 | 17.5 | 50.8 | 27 | 13 | 7 | 34.5 | 88.9 | 90 | 5/8 | M16 | 4 | 3/4 | 1.8 |
| 1 1/4 | 32 | 135 | 64 | 20.7 | 63.5 | 29 | 14 | 7 | 43.2 | 98.4 | 95 | 5/8 | M16 | 4 | 3/4 | 2.3 |
| 1 1/2 | 40 | 155 | 70 | 22.3 | 73 | 32 | 16 | 7 | 49.5 | 114.3 | 110 | 3/4 | M20 | 4 | 7/8 | 3.2 |
| 2 | 50 | 165 | 84 | 25.4 | 92.1 | 37 | 17 | 7 | 61.9 | 127 | 110 | 5/8 | M16 | 8 | 3/4 | 4.1 |
| 2 1/2 | 65 | 190 | 100 | 28.6 | 105 | 41 | 19 | 7 | 74.6 | 149.2 | 120 | 3/4 | M20 | 8 | 7/8 | 5.9 |
| 3 | 80 | 210 | 117 | 31.8 | 127 | 46 | 21 | 7 | 90.7 | 168.3 | 125 | 3/4 | M20 | 8 | 7/8 | 7.3 |
| Pipe Size (NPS) | Outside Diameter of Flange A | Diameter of Bore D | Diameter of Raised Face B | Thickness of Flange C | Diameter of Hub at Base J | Diameter of Bore E | Depth of Socket G | Length of Hub L | Diameter of Bolt Holes DBH | Approx. Weight (lb) AW | Number of Bolt Holes NBH | Bolt Circle Diameter P |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1/2 | 4 3/4 | * | 1 3/8 | 7/8 | 1 1/2 | 0.88 | 3/8 | 1 1/4 | 7/8 | 9 | 4 | 3 1/4 |
| 3/4 | 5 1/8 | * | 1 11/16 | 1 | 1 3/4 | 1.09 | 7/16 | 1 3/8 | 7/8 | 9 | 4 | 3 1/2 |
| 1 | 5 7/8 | * | 2 | 1 1/8 | 2 1/16 | 1.36 | 1/2 | 1 5/8 | 1 | 9 | 4 | 4 |
| 1 1/4 | 6 1/4 | * | 2 1/2 | 1 1/8 | 2 1/2 | 1.70 | 9/16 | 1 5/8 | 1 | 10 | 4 | 4 3/8 |
| 1 1/2 | 7 | * | 2 7/8 | 1 1/4 | 2 3/4 | 1.95 | 5/8 | 1 3/4 | 1 1/8 | 14 | 4 | 4 7/8 |
| 2 | 8 1/2 | * | 3 5/8 | 1 1/2 | 4 1/8 | 2.44 | 11/16 | 2 1/4 | 1 | 25 | 8 | 6 1/2 |
| 2 1/2 | 9 5/8 | * | 4 1/8 | 1 5/8 | 4 7/8 | 2.94 | 3/4 | 2 1/2 | 1 1/8 | 36 | 8 | 7 1/2 |
| 3 | 9 1/2 | * | 5 | 1 1/2 | 5 | 3.57 | 13/16 | 2 1/8 | 1 | 31 | 8 | 7 1/2 |
| Element | Composition, w.t % |
| LF2 | Grades |
| C | ≤0.30 |
| Mn | 0.60-1.35 |
| Cu | ≤0.40 |
| Cb | ≤0.02 |
| P | ≤0.035 |
| S | ≤0.040 | Cr | ≤0.30 |
| Mo | ≤0.12 |
| V | ≤0.08 |
| Si | 0.15-0.30 |
| Ni | ≤0.40 |
| N | ... |
| Grade/Class | Tensile Strength | Yield Strength, min. | Elongation, min. | Hardness, max. | ||
| ksi | MPa | ksi | MPa | % | HBW | |
| LF2 CL2 | 70–95 | 485–655 | 36 | 250 | 22 | 197 |
| Seal Type | Application |
|---|---|
| Male-Female-and Male (MFM) | Explosive, Flammable and Highly Hazardous situation |
| Raised face (RF) | General ,or PN≥10 Mpa situation |
| Temperature °F | 1500# | 150# | 400# | 300# | 900# | 600# | 2500# |
| -20 to 100 | 3600 | 275 | 960 | 720 | 2160 | 1440 | 6000 |
| 200 | 3095 | 235 | 825 | 620 | 1860 | 1240 | 5160 |
| 300 | 2795 | 215 | 745 | 560 | 1680 | 1120 | 4660 |
| 400 | 2570 | 195 | 685 | 515 | 1540 | 1025 | 4280 |
| 500 | 2390 | 170 | 635 | 480 | 1435 | 955 | 3980 |
| 600 | 2255 | 140 | 600 | 450 | 1355 | 900 | 3760 |
| 650 | 2220 | 125 | 590 | 445 | 1330 | 890 | 3700 |
| 700 | 2170 | 110 | 580 | 430 | 1305 | 870 | 3620 |
| 750 | 2135 | 95 | 570 | 425 | 1280 | 855 | 3560 |
| 800 | 2110 | 80 | 565 | 420 | 1265 | 845 | 3520 |
| 850 | 2090 | 65 | 555 | 420 | 1255 | 835 | 3480 |
| 900 | 2075 | 50 | 555 | 415 | 1245 | 830 | 3460 |
| 950 | 1930 | 35 | 515 | 385 | 1160 | 775 | 3220 |
| 1000 | 1750 | 20 | 465 | 350 | 1050 | 700 | 2915 |
| 1050 | 1720 | 20 | 460 | 345 | 1030 | 685 | 2865 |
| 1100 | 1525 | 20 | 405 | 305 | 915 | 610 | 2545 |
| 1150 | 1185 | 20 | 315 | 235 | 710 | 475 | 1970 |
| 1200 | 925 | 20 | 245 | 185 | 555 | 370 | 1545 |
| 1250 | 735 | 20 | 195 | 145 | 440 | 295 | 1230 |
| 1300 | 585 | 20 | 155 | 115 | 350 | 235 | 970 |
| 1350 | 480 | 20 | 130 | 95 | 290 | 190 | 800 |
| 1400 | 380 | 20 | 100 | 75 | 225 | 150 | 630 |
| 1450 | 290 | 20 | 80 | 60 | 175 | 115 | 485 |
| 1500 | 205 | 20 | 55 | 40 | 125 | 85 | 345 |