Normalising
Heat to 860 - 920°C for a time commensurate with ruling section, Air cool (If Required)
ASTM A350 LF2 Flanges
SA350 Gr LF2 CL1 Blind Flange and Low Temperature Carbon Steel Flanges manufacturer in UAE
What Type Of ASTM A350 LF2 Flanges Do We Have?
Usually, the ASTM A350 LF2 Flanges are provided in a Normalised and Tempered form or a Quenched and Tempered state. Its defining characteristics are the moderate hardness and impact strength of the a350 grade lf2. As a result, a350 grade lf2 cl1 is widely employed in producing flanges and connections. In situations where corrosion resistance is not crucial, the a350 gr lf2 cl 1 is also utilized.
All ASTM a350 gr. lf2 class 1 cooled forgings must be annealed at the lowest value of 1100 °F. The SA 350 LF2 Class 1 should then be maintained at that temperature for at least 30 minutes.
SA 350 LF2 Class 1 vs. Class 2 Flanges: Which is Better?
The chemical makeup and mechanical characteristics of Low Temperature Carbon Steel Flanges Class 1 and Class 2 are identical. Class 1 or 2 in the ASME Codes' permissible stresses are equivalent. The lowest applicable temperature is the primary feature that sets Class 1 apart from Class 2. The minimum relevant values for LF2 Class 1 or Class 2 are -46°C and -18°C, respectively. The average Charpy V-notch tensile testing temperature is the minimum relevant temperature. The standard requirement for forged carbon steel or low alloy steel fittings for low-temperature applications is ASTM A350.
So class 2 is better as it has high mechanical properties.
Check Heat Treatment Of A350 LF2 Class 2 Weld Neck Flange, supplier of LTCS Flanges in Middle East as per ASME B16.5, EN 1092-1
General Information On Low-Temperature Carbon Steel Flanges
Due to their higher hardness, LTCS Flanges are typically more difficult to process than traditional austenitic stainless steel. But ASTM A350 LF2 RTJ Flanges have demonstrated good machining characteristics. Lean steel, like SA 350 LF2 CL1 and CL2 Flanges, typically provides a similar type of corrosion resistance. Still, thanks to its low molybdenum concentration, it performs better in oxidizing environments like nitric acid treatments.
LTCS Flanges Welding Procedure
Low-temperature carbon metal parts, or LTCS materials, have primarily been created for usage in low-temperature machinery, mainly welded pressure tanks.
View Advantages Of ASTM A350 LF2 Low Temperature Slip On Flange, best price of A350 LF2 Killed Carbon Steel Flanges in Dubai, Check Pressure-Temperature Rating & Chemical Composition
Table of content
Specialized in manufacturing
ASTM A350 LF2 Flanges
ASTM A350 LF2 Flange, Also Called (Low Temperature Carbon Steel Flanges) Is Usually Used For Ship Building, oil And Gas Transport In The Cold Weather On -50℃ To 800℃.
Size
1/2 Inches To 48 Inches
Class
150 To 2500
Schedule
SCH 10S To SCH 80S
ASME
B16.5
Heat Treatment Of A350 LF2 Flange
Hardening
Heat to 890 – 960oC for a time commensurate with ruling section and quench in Water.
Tempering
Re-heat to 590oC Min. as required, dependent on final required properties.
Supply Range Of A350 Lf2 Carbon Steel Flanges
- Grades : ASTM A350 Grade LF2/ LF3/ LF6/ LF9 CL 1, 2, 3
- O.D. : 1/2'' to 24'' in ANSI B16.5, up to 60 Inch in ANSI B16.47
- Wall Thickness : SCH 10 To 180 comply with ANSI B16.9
- Pressure Class : Class 150 To 2500
- ASME Standards : ASME B16.5, ASME B16.47 A & B, ASME B16.36, ASME B16.48
Low Temperature Carbon Steel Flanges Features
- Environment friendly
- Low Coast
- Ductility
- Safe to process
- High strength
- Easy to weld
Face Types Of LTCS Flanges
- Flat Face (FF)
- Raised Face (RF)
- Ring Type Joint (RTJ)
- Tongue & Grooved (T & G)
- Lap Joint
- Male & Female (M & F)
ASTM A350 LF2 Material Specification
| Specifications | ASTM A350 LF2 Flanges |
|---|---|
| Transportation In | Air & Ocean and Land |
| Available Packing | Packing In Plywood Box And Plywood Pallet |
| Use In | Marine & dredging Sanitation Process Instrumentation Oil and Gas Petrochemical/ Refinery/Chemical Power etc. |
| Supporting Material For Flanges | Gasket/ Ring Joint/ Flanges Bolts |
| Testing | Hydrostatic testing machine Magnetic particle detector Direct-reading Spectrograph UI trasonic flaw detector |
| Manufacturing Productivity | 900 ton per month |
| Supply Ability | 600 Ton Per Month |
| Class | Class 150 to 2500. PN 2.5 to PN 250. |
| Equipment | Pushing Machine Press machine electric bevelling machine |
| Face Type | RF (Raised Face), RTJ (Ring Type Joint) |
| Brand Name | Schulzmann |
| Certificate | ISO |
| Payment Type | L/C,T/T,D/P,Paypal |
| JIS Standard | 5K/ 10K/ 16K 20K/ 30K/ 40K/ 63K |
| Size | 1/2” to 24” (customized diameters: up to 60”.) |
| EN Standard | 6Bar/ 10Bar/ 16Bar/ 25Bar/ 40Bar |
| Methods Of Forging | Casting Forging Rolling Cutting |
| DIN Standard | PN6/ PN10/ PN16/ PN25/ PN40/ PN64 |
ASTM A350 LF2 Low Temperature Flange Price List
| Description | Price In US ($) |
|---|---|
| SOCKET WELD FLANGE, 1/2 INCH, 150#, A350 LF2 | US $42.69 Per KG |
| FLANGE, 1/2 INCH, 300#, SCH160 WNRF, A350 LF2 ASME B16.5 | US $31.64 Per KG |
| FLANGE, 1/2 INCH, 300#, SCH160 WNRF, A350 LF2 ASME B16.5 | US $21.10 Per KG |
| FLANGE, 2 INCH, 150# BLIND RD A350 LF2 | US $26.38 Per KG |
| A350 LF2, 2 INCH, WN 900#, RJ XS/80S (FLANGES) | US $549.76 Per KG |
| FLANGE, 3/4 INCH, 300#, SCH 160 WNRF, A350 LF2 ASME B16.5 | US $38.49 Per KG |
| FLANGE, 1/2 INCH, 300#, SCH 160 WNRF, A350 LF2 ASME B16.5 | US $10.54 Per KG |
Types Of Low Temperature Carbon Steel Flanges
SA350 LF2 Blind Flange
A350 Grade LF2 Slip On Flange
ASTM A350 Gr Lf2 Class 1 Weld Neck Flange
LTCS Socket Weld Flanges
A350 LF2 Carbon Steel Plate Flanges
A350 LF2 LTCS Lap Joint Flange
Grade Lf2 CL 1 Threaded Flanges
A350 LF2 CS Orifice Flanges
ASME SA350 LF2 CL1 Spectacle Blind Flanges
ASTM A350 LF2 Low Temperature Flange
LTCS Flanges
Low Temperature Carbon Steel Flanges
ASTM A350 LF2 Chemical Composition
| Chromium | 0.30 | Columbium | 0.02 |
| Manganese | 0.60-1.05 | Phosphorus | 0.035 |
| Silicon | 0.15-0.30 | Sulfur | 0.040 |
| Nickel | 0.40 | ||
| Carbon | 0.30 | Molybdenum | 0.12 |
| Copper | 0.40 | Vanadium | 0.08 |
Other Grade Chemical composition
| Grade | C% | Mn% | Si% | S% | P% | Cr% | Ni% |
| A350 LF2 LF1 | 0.30 maximum | 0.6/1.35 | .15/.30 | .040 maximum | .035 maximum | 0.30 maximum | 0.40 maximum |
| A350 LF2 LF3 | 0.20 maximum | 0.90 | .20/.35 | .040 maximum | .035 maximum | 0.30 maximum | 3.3/3.7 |
ASTM A350 LF2 Class 1 Mechanical Properties
| Yield Strength, minimum (ksi) | 36 |
| Elongation, minimum (%) | 22 |
| Tensile Strength, minimum (ksi) | 70-95 |
Standard For SA350 LF2 LTCS Flanges
| NPS /strong> |
O.D. of flanges |
Minimum WT |
Length Of Overall | B.C. | Number Holes | O.D. of R/F | |||
|---|---|---|---|---|---|---|---|---|---|
| WNRF | SORF & SWRF BLRF |
Lapped Joint | |||||||
| O | Q | Y | Diameter | Number | Diameter | R | |||
| 1/2 | 89 | 11.2 | 47.6 | 15.9 | 15.9 | 60.5 | 4 | 15 | 35 |
| 3/4 | 117 | 15.9 | 57.2 | 25.4 | 25.4 | 82.5 | 4 | 15 | 43 |
| 1 | 108 | 14.3 | 55.6 | 17.5 | 17.5 | 79.5 | 4 | 15 | 51 |
| 1.1/4 | 117 | 15.9 | 57.2 | 20.6 | 20.6 | 89.0 | 4 | 15 | 64 |
| 1.1/2 | 127 | 17.5 | 61.9 | 22.2 | 22.2 | 98.5 | 4 | 15 | 73 |
| 2 | 152 | 19.1 | 63.5 | 25.4 | 25.4 | 120.5 | 4 | 19 | 92 |
| 2.1/2 | 178 | 22.3 | 69.8 | 28.6 | 28.6 | 139.5 | 4 | 19 | 105 |
| 3 | 190 | 23.9 | 69.8 | 30.2 | 30.2 | 152.5 | 4 | 19 | 127 |
| 3.1/2 | 216 | 23.9 | 71.4 | 31.8 | 31.8 | 178.0 | 8 | 19 | 140 |
| 4 | 229 | 23.9 | 86.2 | 33.3 | 33.3 | 190.5 | 8 | 19 | 157 |
| 5 | 254 | 23.9 | 88.9 | 36.5 | 36.5 | 216.0 | 8 | 22 | 186 |
| 6 | 279 | 25.4 | 88.9 | 39.7 | 39.7 | 241.5 | 8 | 22 | 216 |
| 8 | 343 | 28.6 | 101.6 | 44.4 | 44.4 | 298.5 | 8 | 22 | 270 |
| 10 | 406 | 30.2 | 101.6 | 49.2 | 49.2 | 362.0 | 12 | 25 | 324 |
| 12 | 483 | 31.8 | 114.3 | 55.6 | 55.6 | 432.0 | 12 | 25 | 381 |
| 14 | 533 | 35.0 | 127.0 | 57.2 | 79.4 | 476.0 | 12 | 29 | 413 |
| 16 | 597 | 36.6 | 127.0 | 63.5 | 87.3 | 539.5 | 16 | 29 | 470 |
| 18 | 635 | 39.7 | 139.7 | 68.3 | 96.8 | 578.0 | 16 | 32 | 533 |
| 20 | 698 | 42.9 | 144.5 | 73.0 | 103.2 | 635.0 | 20 | 32 | 584 |
| 24 | 813 | 47.7 | 152.4 | 82.6 | 111.1 | 749.5 | 20 | 35 | 692 |
Class 150 To 2500 A350 LF2 Flange dimensions and weight Chart, one of the favourite manufacturer & exporter of EN 1092-2 LF2 Steel Socket Weld Flange in Qatar, Iran, Turkey and Kuwait
A350 LF2 Class 2 WN Flange Tolerance
| Certificate | thickness of Plate in millimeter | Width in millimeter | Length in millimeter | |
| OD | When O is 24 Inch or less. When O is over 24 Inch. | ±0.06 Inches ±0.12 Inches | ±1.6 (mm) | ±3.2 (mm) |
| Contact Face Diameter | 0.06″ (1.6 mm) R/F. 0.25″ (6.4 mm) R/F. | ±0.03″ ±0.02″ | ±0.8 (mm) | ±0.5 (mm) |
| Dia. of Hub at Point of Welding | Normal Pipe Size 5 and same Normal Pipe Size 6 and larger. | +0.09″, -0.03″ +0.16″, -0.03″ | +2.4 (mm), -0.8(mm) | +4.0 (mm), -0.8 (mm) |
| ID | Normal Pipe Size 10, 12, 18, 20 and larger. | +0.03″ +0.06″ +0.12″, -0.06″ | +0.8 mm +1.6 mm | +3.2 mm, -1.6 mm |
| Dia. of Hub at Base | Hub Base is 24 Inches or less. Hub Base is over 24 Inches. | +0.06″ +0.12″ | +1.6 (mm) | +3.2 (mm) |
| Thickness | NPS 18 and same NPS 20 and larger. | +0.12″ +0.19″ | +3.2 (millimeter) | +4.8 (millimeter) |
| Facings and Drilling | B.C. dia. Bolt Hole Spacing | ±0.06″ ±0.03″ | ±1.6 mm | ±0.8 mm |
| Eccentricity of B.C. and Facing | Normal Pipe Size 2 1/2 and smaller. Normal Pipe Size 3 and larger. | ±0.03″ ±0.06″ | ±0.8 mm | ±1.6 mm |
| Length Through Hub | Normal Pipe Size 10 and smaller. Normal Pipe Size 12 and larger. | ±0.06″ ±0.12″ | ±1.6 (mm) | ±3.2 (mm) |
LTCS Flanges Weight Chart In KG
| CLASS | NPS | Slip On Flange | Threaded Flange | Socket Weld Flange | Lap Joint Flange | Blind Flange | Weld Neck Flange |
|---|---|---|---|---|---|---|---|
| Class 150 Flange | ½ | 1 | 1 | 2 | 1 | 2 | 2 |
| ¾ | 2 | 2 | 2 | 2 | 2 | 2 | |
| 1 | 2 | 2 | 2 | 2 | 2 | 3 | |
| 1¼ | 3 | 3 | 3 | 3 | 3 | 3 | |
| 1½ | 3 | 3 | 3 | 3 | 4 | 4 | |
| 2 | 5 | 5 | 5 | 5 | 5 | 6 | |
| 2½ | 8 | 8 | 8 | 8 | 7 | 10 | |
| 3 | 9 | 9 | 9 | 9 | 9 | 11.5 | |
| 3½ | 11 | 12 | 11 | 11 | 13 | 12 | |
| 4 | 13 | 13 | 13 | 13 | 17 | 16.5 | |
| 5 | 15 | 15 | 15 | 15 | 20 | 21 | |
| 6 | 19 | 19 | 19 | 19 | 27 | 26 | |
| 8 | 30 | 30 | 30 | 30 | 47 | 42 | |
| 10 | 43 | 43 | 43 | 43 | 70 | 54 | |
| 12 | 64 | 64 | 64 | 64 | 123 | 88 | |
| 14 | 90 | 90 | 90 | 105 | 140 | 114 | |
| 16 | 106 | 98 | 98 | 140 | 180 | 140 | |
| 18 | 130 | 130 | 130 | 160 | 220 | 165 | |
| 20 | 165 | 165 | 165 | 195 | 285 | 197 | |
| 22 | 185 | 185 | 185 | 245 | 355 | 225 | |
| 24 | 220 | 220 | 220 | 275 | 430 | 268 |
Sizes Of A350 LF2 Blind Flange
Normal Pipe Size |
DN |
|---|---|
1/2 |
15 |
3/4 |
20 |
1 |
25 |
1 1/4 |
32 |
1 1/2 |
40 |
2 |
50 |
2 1/2 |
65 |
3 |
80 |
4 |
100 |
Gasket For ASME SA350 LF2 Slip On Flange
| Normal Pipe Size In Inch | (I.D.) Gasket | (O.D.) Gasket |
|---|---|---|
| Class 150 | ||
| 1/2 | 0.84 | 1.875 |
| 3/4 | 1.06 | 2.25 |
| 1 | 1.31 | 2.625 |
| 1 1/4 | 1.66 | 3 |
| 1 1/2 | 1.91 | 3.375 |
| 2 | 2.38 | 4.125 |
| 2 1/2 | 2.88 | 4.875 |
| 3 | 3.50 | 5.375 |
| 4 | 4.50 | 6.875 |
| 5 | 5.56 | 7.75 |
| 6 | 6.62 | 8.75 |
| 8 | 8.62 | 11 |
| 10 | 10.75 | 13.375 |
Pipe Flange A350 LF2 Bolts Chart
| NPS (in inch) |
Class 150 A350 LF2 Flanges | ||||
|---|---|---|---|---|---|
| Diameter ( in Inches) |
Number of Bolts |
Diameter of Bolts (in Inches) |
Diameter of Bolts Holes (in Inches) |
(B.C.) (in Inches) |
|
| 1/4 | 3-3/8 | 4 | 1/2 | 0.62 | 2-1/4 |
| 1/2 | 3-1/2 | 4 | 1/2 | 0.62 | 2-3/8 |
| 3/4 | 3-7/8 | 4 | 1/2 | 0.62 | 2-3/4 |
| 1 | 4-1/4 | 4 | 1/2 | 0.62 | 3-1/8 |
| 1-1/4 | 4-5/8 | 4 | 1/2 | 0.62 | 3-1/2 |
| 1-1/2 | 5 | 4 | 1/2 | 0.62 | 3-7/8 |
| 2 | 6 | 4 | 5/8 | 0.75 | 4-3/4 |
| 2-1/2 | 7 | 4 | 5/8 | 0.75 | 5-1/2 |
| 3 | 7-1/2 | 4 | 5/8 | 0.75 | 6 |
| 3-1/2 | 8-1/2 | 8 | 5/8 | 0.75 | 7 |
| 4 | 9 | 8 | 5/8 | 0.75 | 7-1/2 |
| 5 | 10 | 8 | 3/4 | 0.88 | 8-1/2 |
| 6 | 11 | 8 | 3/4 | 0.88 | 9-1/2 |
| 8 | 13-1/2 | 8 | 3/4 | 0.88 | 11-3/4 |
| 10 | 16 | 12 | 7/8 | 1 | 14-1/4 |
| 12 | 19 | 12 | 7/8 | 1 | 17 |
| 14 | 21 | 12 | 1 | 1.12 | 18-3/4 |
| 16 | 23-1/2 | 16 | 1 | 1.12 | 21-1/4 |
| 18 | 25 | 16 | 1-1/8 | 1.25 | 22-3/4 |
| 20 | 27-1/2 | 20 | 1-1/8 | 1.25 | 25 |
| 24 | 32 | 20 | 1-1/4 | 1.38 | 29-1/2 |
ASTM A350 LF2 Class 1 Lap Joint Flange manufacturer in UAE offers RTJ/ RF Face Types in SCH 40/80 and 2" To 24 Inches, buy ASME SA350 LF2 CL2 Threaded/ Plate/ Spectacle Blinds/ Orifice Flanges at factory price in Dubai
Manufacturing Drawing Of A350 LF2 Killed Carbon Steel Flanges
A350 LF2 Flanges Impact Test Temperature
| Grade | Test Temperature, ℉ [℃] |
|---|---|
| LF1 | -20 [-29] |
| LF2 Class 1 | -50 [-46] |
| LF2 Class 2 | -0 [-18] |
| LF3, Classes 1 and 2 | -150 [-101] |
| LF6, Classes 1 and 2 | -60 [-51] |
| LF787 Class 2 | -75 [-59] |