ASTM A350 LF3 Flanges

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ASME SA 350 LF3 CL1 Forgings Manufacturer in India


What is ASTM A350 LF3 Flanges & Temperature Range as well pressure class
TThe LF3 grade has a special chemical makeup with a maximum carbon content of 0.2 percent and is classified as a low-alloy steel under ASTM A350. In variable amounts, the material grade also contains additional elements such silicon, sulphur, phosphorus, chromium, and nickel. The ASTM A350 LF3 flange is forged between 1175 and 1205 degrees Celsius. However, it should be emphasised that they should not be forged at temperatures lower than 925 degrees Celsius. When the pressure class is 150, the temperature range of ASTM A350 LF3 is above 200 degrees C, and it reaches 400 degrees C for higher pressure classes. Over -29 degrees Celsius is the low working temperature. The LF3 flanges of ASTM A350

ASME SA 350 LF3 CL1 Forging process
The ASTM A350 LF3 flange is forged between 1175 and 1205 degrees Celsius. However, it should be emphasised that they should not be forged at temperatures lower than 925 degrees Celsius. These undergo continuous heat treatment before and after welding. The forging process determines the structure, hence the flange's structure will be derived from forgings. When necessary, they can also be simply machined, and the structure can be left as-forged. Therefore, it is crucial to choose the machining method in accordance with the flange's intended application.

ASTM A350 LF3 Flanges

ASTM A350 LF3 Flanges

Check Price List of LTCS Gr LF3 Weld Neck, Blind, and A 350 LF3 Plate Flange Ex Mumbai


Size Range 1/2″(15 NB) to 48″ (1200NB)
Pressure Rating Chart ANSI 150 LBS, 300 LBS, 2500 LBS, 900 LBS, 600 LBS, 1500 LBS
JIS 16 K, 5K, 10 K, 20 K, 30 K, 40 K, 63 K
Manufacturer of Connect Type/ Flange Face Type RF, Small Tongue, RTJ, FF, LJF, Large Tongue & Groove
Coating Zinc Plated, Anti-rust Paint, Yellow Transparent, Oil Black Paint, Cold and Hot Dip Galvanized
Manufacturer of GOST, JIS, ANSI, DIN, UNI, BS, AWWA, AS2129, SABS, NFE, EN etc.
DIN Pressure Calculation 25Bar 40Bar 16Bar 6Bar 10Bar / PN64 PN10 PN25 PN16 PN6 PN40
Equipment Pushing Machine, Press machine, Sand-blasting machine, Bending machine, electric bevelling machine etc
Origin Japan / West Europe / Indian / USA / Korean
UNI / EN 16Bar 6Bar 40Bar 10Bar 25Bar
Test X-ray detector, Direct-reading Spectrograph, Magnetic particle detector, Ultrasonic flaw detector, Hydrostatic testing machine
Standards Provided By Manufacturer ISO70051, MSS S44, API7S-43, API605, B16.48, ANSI/ASME B16.5, B16.47 Series A & B, BS4504, JISB2220, BS1560-3.1, ASME/ANSI B16.5/16.36/16.47A/16.47B, BS 10, EN-1092, DIN, API7S-15, EN1092
Common Types By Manufacturer Threaded / Screwed / Forged / Plate
Production technique Used By Manufacturer Heat treated, Forged and machined
Nominal Pipe Size
NPS
(inches)
Class 300
Diameter of
Flange
(inches)
No.
of
Bolts
Diameter of
Bolts
(inches)
Diameter of
Bolt Holes
(inches)
Bolt
Circle
(inches)
1/4 3-3/8 4 1/2 0.62 2-1/4
1/2 3-3/4 4 1/2 0.62 2-5/8
3/4 4-5/8 4 5/8 0.75 3-1/4
1 4-7/8 4 5/8 0.75 3-1/2
1-1/4 5-1/4 4 5/8 0.75 3-7/8
1-1/2 6-1/8 4 3/4 0.88 4-1/2
2 6-1/2 8 5/8 0.75 5
2-1/2 7-1/2 8 3/4 0.88 5-7/8
3 8-1/4 8 3/4 0.88 6-5/8
3-1/2 9 8 3/4 0.88 7-1/4
4 10 8 3/4 0.88 7-7/8
5 11 8 3/4 0.88 9-1/4
6 12-1/2 12 3/4 0.88 10-5/8
8 15 12 7/8 1 13
10 17-1/2 16 1 1.12 15-1/4
12 20-1/2 16 1-1/8 1.25 17-3/4
14 23 20 1-1/8 1.25 20-1/4
16 25-1/2 20 1-1/4 1.38 22-1/2
18 28 24 1-1/4 1.38 24-3/4
20 30-1/2 24 1-1/4 1.38 27
24 36 24 1-1/2 1.62 32
NPS (Nominal Pipe Size) Loose (Lap Joint) NPT (Threaded) SORF (Slip On) BLRF (Blind) SWRF (Socket Weld) WRNR (Weld Neck)
½ 1 1 1 2 2 2
1 2 2 2 2 2 3
3 3 3 3 3 3
¾ 2 2 2 2 2 2
3 3 3 4 3 4
8 8 8 7 8 10
2 5 5 5 5 5 6
3 9 9 9 9 9 11.5
4 13 13 13 17 13 16.5
11 12 11 13 11 12
5 15 15 15 20 15 21
8 30 30 30 47 30 42
6 19 19 19 27 19 26
10 43 43 43 70 43 54
24 275 220 220 430 220 268
14 105 90 90 140 90 114
12 64 64 64 123 64 88
16 140 98 106 180 98 140
20 195 165 165 285 165 197
18 160 130 130 220 130 165
22 245 185 185 355 185 225

Supplier of LTCS Flange Material in India and Largest Stockist of DIN 1.5639 flange in India

ASTM A350 LF3 Flanges Price Per Piece in India ASTM A350 Grade LF3 Flange Price in INR ASTM A350 Lf3 Class 1 Flange Price in UAE Dirham A350 LF3 Class 2 Flanges Price in USD
WNRF 4 INCH X SCH 120/160 X 150 SA-350 LF3 CLASS 1 Per Kg 811 UAE Dirham 40.03 $10.90
2 inch astm a350 lf3 weld neck flange ASME/ANSI B16.5 Per Kg 186.05 UAE Dirham 9.18 $2.50
Element Min Max
V - 0.0300
S - 0.0400
P - 0.0350
Si 0.2000 0.3500
Ni 3.3000 3.7000
Nb - 0.0200
Cr - 0.3000
Mo - 0.1200
Cu - 0.4000
Mn - 0.9000
Cr+Mo - 0.3200
C - 0.2000
Yield
Rp0.2 (MPa)
Impact
KV/Ku (J)
Reduction in cross section on fracture
Z (%)
Elongation
A (%)
Tensile
Rm (MPa)
Brinell hardness (HBW)
991 (≥) 24 33 34 657 (≥) 333
Manufacturer of Low Alloy steel forged Flanges and A350 LF3 Ring Rolled Flanges
Temperature Range 343°C
Property Value
Melting point 1316 - 1595 °C
Specific heat capacity 456 J/(kg·K)
Thermal conductivity 10 - 50 W/(m·K)
Temperature
(°C)
Specific electrical resistivity
(Ω mm²/m)
Modulus of elasticity
(GPa)
Thermal conductivity
(W/m·°C)
Specific thermal capacity
(J/kg·°C)
Density
(kg/dm³)
Mean coefficient of thermal expansion 10-6/(°C) between 20(°C) and Poisson’s coefficient, ν
14 0.13 - - -
384 978 14.3 441 - -
828 - 44.2 443 34 312
ASTM A350 LF3 Cl.2 Socket Weld Flange

ASTM A350 LF3 Cl.2 Socket Weld Flange

ASTM A350 Gr Lf3 SORF Flanges

ASTM A350 Gr Lf3 SORF Flanges

ASTM A350 Gr LF3 WNRF Flange

ASTM A350 Gr LF3 WNRF Flange

SA350 LF3 BLRF Flanges

SA350 LF3 BLRF Flanges

ASTM A350 Grade Lf3 Slip On Flange

ASTM A350 Grade Lf3 Slip On Flange

ASTM A350 Gr LF3 Cl2 Blind Flange

ASTM A350 Gr LF3 Cl2 Blind Flange

A350 Grade LF3 Class 2 Girth Flanges

A350 Grade LF3 Class 2 Girth Flanges

A350 LF3 Class 2 SWRF Flanges

A350 LF3 Class 2 SWRF Flanges

ASTM A350 LF3 Cl1 Expander Flanges

ASTM A350 LF3 Cl1 Expander Flanges

ASTM A350 Grade LF3 Long Weld Neck Flange

ASTM A350 Grade LF3 Long Weld Neck Flange

ASTM A350 Gr LF3 Cl2 Nipoflange

ASTM A350 Gr LF3 Cl2 Nipoflange

A350 LF3 Class 2 Screwed Flange

A350 LF3 Class 2 Screwed Flange

A350 Gr LF3 Reducing Flanges

A350 Gr LF3 Reducing Flanges

ASTM A350 Lf3 Class 1 Orifice Flanges

ASTM A350 Lf3 Class 1 Orifice Flanges

ASTM A350 Grade LF3 Class 2 Lapped Joint Flange

ASTM A350 Grade LF3 Class 2 Lapped Joint Flange

ASTM A350 Grade LF3 Weld Neck Flanges

ASTM A350 Grade LF3 Weld Neck Flanges

ASTM A350 Grade LF3 Class 2 Tongue & Groove Flange

ASTM A350 Grade LF3 Class 2 Tongue & Groove Flange

ASME SA350 LF3 Spectacle Blind Flange

ASME SA350 LF3 Spectacle Blind Flange

ASTM A350 LF3 Cl2 Ring Joint Flange

ASTM A350 LF3 Cl2 Ring Joint Flange

ASTM A350 LF3 Class 1 Threaded Flange

ASTM A350 LF3 Class 1 Threaded Flange

ASTM A350 Grade LF3 Flange

ASTM A350 Grade LF3 Flange

ASTM A350 Lf3 Class 1 Flange

ASTM A350 Lf3 Class 1 Flange

ASTM A350 Gr LF3 Flange

ASTM A350 Gr LF3 Flange

A350 Gr LF3 Flange

A350 Gr LF3 Flange

A350 LF3 Class 2 Flanges

A350 LF3 Class 2 Flanges

ASTM A350 Grade LF3 Flanges

ASTM A350 Grade LF3 Flanges

A350 Grade LF3 Flanges

A350 Grade LF3 Flanges

ASTM A350 LF3 Forgings and Low Temperature Carbon Steel Material supplier with Test Certificate EN 10204/3.1B
  • Floor-type Milling-boring Machine
  • Bending Machine
  • Turning and Milling
  • Portal-type Processing Center
  • Welding Machine
  • Cutting Machine
  • Vertical Lathe
  • Deep-Hole Drilling Machine
  • Multi-Drilling Machine
  • Planer
Nom Pipe Size OD Sch 10 Sch 20 Sch 30 STD Wall Sch 40 Sch 60 EXT Hvy Sch 80 Sch 100 Sch 120 Sch 140 Sch 160 XX Hvy
½ 0.84 0.083 0.109 0.109 0.147 0.147 0.188 0.294
¾ 1.05 0.083 0.113 0.113 0.154 0.154 0.219 0.308
1 1.315 0.109 0.133 0.133 0.179 0.179 0.25 0.358
1 ¼ 1.66 0.109 0.14 0.14 0.191 0.191 0.25 0.382
1 ½ 1.9 0.109 0.145 0.145 0.2 0.2 0.281 0.4
2 2.375 0.109 0.154 0.154 0.218 0.218 0.344 0.436
2 ½ 2.875 0.12 0.203 0.203 0.276 0.276 0.375 0.552
3 3.5 0.12 0.216 0.216 0.3 0.3 0.438 0.6
3 ½ 4 0.12 0.226 0.226 0.318 0.318 0.636
4 4.5 0.12 0.237 0.237 0.337 0.337 0.438 0.531 0.674
5 5.563 0.134 0.258 0.258 0.375 0.375 0.5 0.625 0.75
6 6.625 0.134 0.28 0.28 0.432 0.432 0.562 0.719 0.864
8 8.625 0.148 0.25 0.277 0.322 0.322 0.406 0.5 0.5 0.594 0.719 0.812 0.906 0.875
10 10.75 0.165 0.25 0.307 0.365 0.365 0.5 0.5 0.594 0.719 0.844 1 1.125 1
12 12.75 0.18 0.25 0.33 0.375 0.406 0.562 0.5 0.688 0.844 1 1.125 1.312 1
14 14 0.25 0.312 0.375 0.375 0.438 0.594 0.5 0.75 0.938 1.094 1.25 1.406
16 16 0.25 0.312 0.375 0.375 0.5 0.656 0.5 0.844 1.031 1.219 1.438 1.594
18 18 0.25 0.312 0.438 0.375 0.562 0.75 0.5 0.938 1.156 1.375 1.562 1.781
20 20 0.25 0.375 0.5 0.375 0.594 0.812 0.5 1.031 1.281 1.5 1.75 1.969
22 22 0.25 0.375 0.5
24 24 0.25 0.375 0.562 0.375 0.688 0.969 0.5 1.219 1.531 1.812 2.062 2.344
26 26 0.375 0.5
30 30 0.312 0.5 0.625 0.375 0.5
36 36 0.312 0.5 0.625 0.375 0.75 0.5
40 40 0.375 0.5
42 42 0.375 0.5
48 48 0.375 0.5
Temperature °F Class 150 Class 600 Class 1500 Class 400 Class 900 Class 300 Class 2500
-20 to 100 275 1440 3600 960 2160 720 6000
300 205 1080 2700 720 1620 540 4500
200 230 1200 3000 800 1800 600 5000
400 190 995 2485 660 1490 495 4140
600 140 875 2185 580 1310 435 3640
650 125 860 2150 575 1290 430 3580
500 170 930 2330 620 1395 465 3880
700 110 850 2125 565 1275 425 3540
750 95 830 2075 555 1245 415 3460
850 65 790 1980 530 1190 395 3300
800 80 805 2015 540 1210 405 3360
900 50 780 1945 520 1165 390 3240
950 35 765 1910 510 1145 380 3180
1000 20 640 1605 430 965 320 2675
1100 20 515 1285 345 770 255 2145
1150 20 400 995 265 595 200 1655
1050 20 615 1545 410 925 310 2570
1200 20 310 770 205 465 155 1285
1250 20 225 565 150 340 115 945
1300 20 170 430 115 255 85 715
1400 20 95 240 65 145 50 400
1350 20 125 310 80 185 60 515
1450 15 70 170 45 105 35 285
1500 10 55 135 35 80 25 230