Astm A350 Lf2 Flanges
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astm a350 lf2 flanges are suitable for use down to –20ºF (LF1,) –50ºF (LF2) and –150ºF (LF3.)
carbon steel a350 lf2 flanges contains up to about 1% carbon and 1.65% manganese and other elements are present in quantities too small to affect its properties.
sa350 lf2 flanges forging temperature is 900 – 1200 °C. In order to avoid heavy scaling soak times should be kept to a minimum. But enough time should also be given in order to allow centre to achieve furnace temperature. After forging it should be allowed to cool in still air.
flange wn a350 lf2 has moderate strength and impact toughness and is used extensively for the manufacture of flanges and fittings, and applications which require cold temperature service where corrosion resistance is not essential.
blind flange lf2 is readily weldable by any technique. It is a flange that does not have a hub or a bored centre. It has the face thickness of a flange, similar bolting pattern and a matching face type.
flange material a350 lf2 is the standard specification for carbon steel and low alloy steel forged flanges and flanged fittings for low temperature services.
pipe flange a350 lf2 is a general carbon steel usually supplied in the normalised, normalised and tempered or quench and tempered condition.
a350 lf2 class 1 flange is primarily used for pipelines and for forged flanges.
a350 lf2 welding neck flange has very good machinability, dependent on condition, and operations such as turning, sawing, milling, broaching, etc. can be expert satisfactorily by using standard machine tool manufacturers with recommended feeds and speeds. It consists of a circular fitting with an extending rim around the circumference. It is a machined from forging, it is typically butt welded to a pipe. The rim has a series of drilled holes that allow the flange to be affixed to another flange with bolts.
| Size | 1/2" TO 4" |
| Range | 15 NB TO 100 NB IN 3000 LBS, 6000 LBS, 9000 LBS |
| Grade | ASTM / ASME A105/ A105N/ A694 F42/46/52/56/60/65/70 / A350 LF3/ A350 LF2 |
| Pressure Rating | 2000#, 3000#, 6000#, 9000# |
| Class | 150#, 300#, 400#, 600#, 900#, 1500# & 2500#. |
| Type | Socketweld Fittings, Screwed-Threaded Fittings |
| Form | Tee, Union, Full Coupling, Half Coupling,Elbow 45 Deg & 90 Deg, Swage Nipple, Cross, Cap, Plug Bush |
| Type | Description | USA FOB Price | Malaysia FOB Price | Europe FOB Price | Singapore FOB Price | Saudi Arabia (KSA) FOB Price | |||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Unit Per mtr | Unit Per mtr | Unit Per mtr | Unit Per mtr | Unit Per mtr | |||||||
| ASTM A350 Gr Lf2 | Size : 2"NB x 300#, weldneck flange | US $ | 4.82 | Malaysia Ringgit | 19.62 | Euro | 4.05 | Singapore Dollar | 6.46 | Saudi Riyal | 18.08 |
Astm A350 Lf2 Flanges
Astm A350 Lf2 Cl1 Blind Flange
Sa350 Lf2 Flanges
Pipe Flange A350 Lf2
A350 Lf2 Welding Neck Flange
Sa350lf2 Cl1 Blind Flange
| Standard | Class | Diameter | Bolt Circle Diameter | Number of Bolts | Bolt Size | Diameter of Bolt Hole |
|---|---|---|---|---|---|---|
| AS4087 | PN14 | 95 | 67 | 4 | M12 | 14 |
| AS 2129 Flange | Table C | 95 | 67 | 4 | 13 | 14 |
| Table D | 95 | 67 | 4 | 13 | 14 | |
| Table E | 95 | 67 | 4 | 13 | 14 | |
| Table F | 95 | 67 | 4 | 13 | 14 | |
| Table H | 114 | 83 | 4 | 16 | 17 | |
| Table J | 114 | 83 | 4 | 16 | 17 | |
| ASTM B16.5 | ASTM 150 | 89 | 60 | 4 | 13 | 16 |
| ASTM 300 | 95 | 67 | 4 | 13 | 16 | |
| ASTM 600 | 95 | 67 | 4 | 13 | 16 | |
| ASTM 900 | 121 | 83 | 4 | 19 | 22 | |
| ASTM 1500 | 121 | 83 | 4 | 19 | 22 | |
| ISO 7005 (DIN) Flange | PN6 | 80 | 55 | 4 | M10 | 11 |
| PN10 | 95 | 65 | 4 | M12 | 14 | |
| PN16 | 95 | 65 | 4 | M12 | 14 | |
| PN20 | 90 | 60.5 | 4 | M14 | 16 | |
| PN25 | 95 | 65 | 4 | M12 | 14 | |
| PN40 | 95 | 65 | 4 | M12 | 14 |
| Properties | Metric | Imperial |
|---|---|---|
| Thermal expansion co-efficient (@0-100°C/32-212°F) | 10.4 µm/m°C | 5.78 µin/in°F |
| Thermal conductivity | 21.6 W/mK | 150 BTU in/hr.ft².°F |
| TEMP °C | 150 | 300 | 400 | 600 | 900 | 1500 | 2500 |
| -29 TO 38 | 19.6 | 51.1 | 68.1 | 102.1 | 153.2 | 255.3 | 425.5 |
| 50 | 19.2 | 50.1 | 66.8 | 100.2 | 150.4 | 250.6 | 417.7 |
| 100 | 17.7 | 46.6 | 62.1 | 93.2 | 139.8 | 233 | 388.3 |
| 150 | 15.8 | 45.1 | 60.1 | 90.2 | 135.2 | 225.4 | 375.6 |
| 200 | 13.8 | 43.8 | 58.4 | 87.6 | 131.4 | 219 | 365 |
| 250 | 12.1 | 41.9 | 55.9 | 83.9 | 125.8 | 209.7 | 349.5 |
| 300 | 10.2 | 39.8 | 53.1 | 79.6 | 119.5 | 199.1 | 331.8 |
| 325 | 9.3 | 38.7 | 51.6 | 77.4 | 116.1 | 193.6 | 322.6 |
| 350 | 8.4 | 37.6 | 50.1 | 75.1 | 112.7 | 187.8 | 313 |
| 375 | 7.4 | 36.4 | 48.5 | 72.7 | 109.1 | 181.8 | 303.1 |
| 400 | 6.5 | 34.7 | 46.3 | 69.4 | 104.2 | 173.6 | 289.3 |
| 425 | 5.5 | 28.8 | 38.4 | 57.5 | 86.3 | 143.8 | 239.7 |
| 450 | 4.6 | 23 | 30.7 | 46 | 69 | 115 | 191.7 |
| 475 | 3.7 | 17.4 | 23.2 | 34.9 | 52.3 | 87.2 | 145.3 |
| 500 | 2.8 | 11.8 | 15.7 | 23.5 | 35.3 | 58.8 | 97.9 |
| 538 | 1.4 | 5.9 | 7.9 | 11.8 | 17.7 | 29.5 | 49.2 |
| TEMP °C | 150 | 300 | 400 | 600 | 900 | 1500 | 2500 |
| Nom. Pipe Size | Min. Socket Dia. | Nom. Bore Dia. | A | B | C | D | E | F | G | H | J | K | L | M | N | O | P |
| PRESSURE CLASS 3000 | |||||||||||||||||
| 1/8 | 0.42 | 0.269 | 0.8 | 0.9 | 0.7 | 0.9 | 0.4 | 0.3 | 1.1 | 0.8 | 0.4 | 0.7 | |||||
| 1/4 | 0.555 | 0.364 | 0.8 | 0.9 | 0.7 | 0.9 | 0.4 | 0.3 | 1.1 | 0.9 | 1.62 | 0.7 | 1.25 | 0.3 | 0.4 | 0.9 | 0.8 |
| 3/8 | 0.69 | 0.493 | 0.9 | 1.1 | 0.7 | 1.1 | 0.5 | 0.3 | 1.1 | 1.1 | 1.88 | 0.8 | 1.44 | 0.4 | 0.4 | 1.3 | 0.8 |
| 1/2 | 0.855 | 0.622 | 1.1 | 1.3 | 0.8 | 1.3 | 0.6 | 0.4 | 1.3 | 1.3 | 2.06 | 0.8 | 1.62 | 0.4 | 0.4 | 1.3 | 0.8 |
| 3/4 | 1.065 | 0.824 | 1.3 | 1.5 | 1 | 1.5 | 0.8 | 0.5 | 1.5 | 1.5 | 2.53 | 1 | 2 | 0.4 | 0.6 | 1.5 | 1 |
| 1 | 1.33 | 1.049 | 1.4 | 1.8 | 1.1 | 1.8 | 0.9 | 0.6 | 1.6 | 1.9 | 2.94 | 1.1 | 2.38 | 0.5 | 0.6 | 1.8 | 1 |
| 1 1/4 | 1.675 | 1.38 | 1.7 | 2.3 | 1.2 | 2.3 | 1.1 | 0.7 | 1.6 | 2.3 | 3.44 | 1.3 | 2.81 | 0.6 | 0.6 | 2.3 | 1.1 |
| 1 1/2 | 1.915 | 1.61 | 1.9 | 2.5 | 1.3 | 2.5 | 1.3 | 0.8 | 1.6 | 2.5 | 3.88 | 1.4 | 3.19 | 0.7 | 0.6 | 2.5 | 1.1 |
| 2 | 2.406 | 2.067 | 2.3 | 3.1 | 1.7 | 3.1 | 1.5 | 1 | 2.1 | 3 | 4.69 | 1.6 | 3.88 | 0.8 | 0.7 | 3.1 | 1.3 |
| 2 1/2 | 2.906 | 2.469 | 2.9 | 3.6 | 2 | 4 | 1.6 | 1.1 | 2.1 | 3.6 | 6.88 | 2.1 | 5.94 | 1.2 | 0.7 | 3.6 | 1.3 |
| 3 | 3.535 | 3.068 | 3.3 | 4.3 | 2.4 | 4.6 | 2.3 | 1.3 | 2.1 | 4.4 | 8.5 | 2.5 | 7.25 | 1.3 | 0.7 | 5.1 | 1.4 |
| 4 | 4.545 | 4.026 | 4.2 | 5.8 | 3.1 | 5.8 | 2.6 | 1.6 | 2.4 | 5.5 | 13.6 | 4 | 12.1 | 2.5 | 0.8 | 6.8 | 1.6 |
| PRESSURE CLASS 6000 | |||||||||||||||||
| 3/8 | 0.69 | 0.344 | 1.1 | 1.3 | 0.9 | 1.3 | 0.6 | 0.4 | 1.1 | 1.3 | 2.12 | 0.9 | 1.5 | 0.3 | 0.4 | 1.3 | 0.9 |
| 1/2 | 0.855 | 0.464 | 1.3 | 1.5 | 1 | 1.5 | 0.8 | 0.5 | 1.3 | 1.5 | 2.56 | 1 | 2 | 0.4 | 0.4 | 1.5 | 0.9 |
| 3/4 | 1.065 | 0.612 | 1.5 | 1.8 | 1.1 | 1.8 | 0.9 | 0.6 | 1.5 | 1.8 | 3 | 1.1 | 2.38 | 0.5 | 0.6 | 1.8 | 1.1 |
| 1 | 1.33 | 0.815 | 1.7 | 2.3 | 1.3 | 2.3 | 1.1 | 0.7 | 1.6 | 2.3 | 3.5 | 1.3 | 2.81 | 0.6 | 0.6 | 2.3 | 1.2 |
| 1 1/4 | 1.675 | 1.16 | 2 | 2.5 | 1.3 | 2.5 | 1.3 | 0.8 | 1.6 | 2.5 | 3.94 | 1.4 | 3.19 | 0.7 | 0.6 | 2.5 | 1.2 |
| 1 1/2 | 1.915 | 1.338 | 2.3 | 3.1 | 1.7 | 3.1 | 1.5 | 1 | 1.6 | 3 | 4.75 | 1.7 | 3.88 | 0.8 | 0.6 | 3.1 | 1.3 |
| 2 | 2.406 | 1.687 | 2.5 | 3.4 | 1.8 | 3.4 | 1.6 | 1.1 | 2.1 | 3.6 | 6.88 | 2.1 | 6 | 1.3 | 0.7 | 3.6 | 1.4 |
| 2 1/2 | 2.906 | 2.125 | 3.2 | 4 | 2 | 4 | 2.3 | 1.3 | 2.1 | 4.3 | 8.5 | 2.5 | 7.5 | 1.5 | 0.7 | 5.1 | 1.4 |
| 3 | 3.535 | 2.624 | 3.7 | 4.8 | 2.4 | 4.6 | 2.5 | 1.4 | 2.1 | 5 | 8.5 | 2.5 | 7.25 | 1.3 | 0.7 | 5.1 | 1.6 |
| 4 | 4.545 | 3.438 | 4.5 | 6 | 3.1 | 5.8 | 2.6 | 1.6 | 2.4 | 6.3 | 13.6 | 4 | 12.1 | 2.5 | 0.8 | 6.8 | 1.8 |
| Grade | C% | Mn% | Si% | S% | P% | Cr% | Ni% |
| LF1 | 0.30 max | 0.6/1.35 | .15/.30 | .040 max | .035 max | 0.30 max | 0.40 max |
| Lf2 | 0.30 max | 0.6/1.35 | .15/.30 | .040 max | .035 max | 0.30 max | 0.40 max |
| LF3 | 0.20 max | 0.90 | .20/.35 | .040 max | .035 max | 0.30 max | 3.3/3.7 |
| PROPERTIES | Imperial |
|---|---|
| TS Min psi (Mpa) | 70,000 (485) |
| YS Min psi (Mpa) | 36,000 (250) |
| EL (2″ Min) | 22% |
| RA Min | 30% |
| Hardness, Bhn | Max 197 |
| -50ºF Charpy | Min Impact |
| Energy F t/Lb (J):- | |
| Set of 3 Specimen* | 15 (20) |
| For One Specimen | 12 (16) |
A350 Lf2 Welding Neck Flange manufacturer
