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ASTM A350 LF2 Flanges

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Manufacturer of Sa 350 Lf2 Class 1/ Class 2 Blind Flange in India, Stockist of Lf2 Carbon Steel Slip on Flange

ASTM A350 LF2 is a forged/low-alloy steel grade. The ASTM A350 LF2 Flanges can be either welded or screwed. It is made up of carbon, silicon, nickel, vanadium, niobium, chromium, copper, sulfur, molybdenum, and manganese. These flanges are highly corrosion resistant and don’t erode easily. These flanges have a good tensile and yield strength and don’t deteriorate under extreme pressures or temperatures. They are used in ship, oil, and gas transport and in temperatures below -50 degrees C. We are the leading manufacturer and supplier of ASTM A350 LF2 Flanges. Our main aim is to produce the best products at reasonable rates.

ASTM A350 LF2 Flanges
ASTM A350 LF2 Flanges
Sa 350 Lf2 Class 1 Blind Flange
Sa 350 Lf2 Class 1 Blind Flange
Lf2 Carbon Steel Slip on Flange
Lf2 Carbon Steel Slip on Flange

Buy A350 Lf2 Class 1 Weld Neck flange and Sa 350 Lf2 Socket Weld Flanges at Factory price in India

The Sa 350 Lf2 Class 1 Blind Flange is used to seal or block the ends of a pipe or a nozzle in a vessel, which is not in use. These flanges are available as a raised face or as a flat-faced flange. The Lf2 Carbon Steel Slip on Flange is used on seamless pipes to ensure they are installed correctly at the right position. They can be easily bolted or welded. All our LTCS A350 LF2 Flanges are manufactured using the best raw materials and cutting-edge technology. This is done following international and national standards.

The Sa 350 Lf2 Socket Weld Flanges are used in connecting pipes of smaller sizes, which are exerted with high pressure. These flanges are attached by inserting a socket and then applying a fillet weld around the top. ASTM A350 lf2 killed carbon steel flanges is deoxidized steel in which all oxygen molecules are removed while preparing this steel. All our products can be customized into different shapes and sizes as per our client’s requirements. Want to know more about our ASTM A350 LF2 Flanges or other products contact us.

Table of Contents


Specification of ASTM A350 LF2 Flanges

Size Chart 1/2" (15 NB) to 48" (1200NB) DN10~DN5000
JIS 5K, 10 K, 16 K 20 K, 30 K, 40 K, 63 K
UNI 6Bar 10Bar 16Bar 25Bar 40Bar
EN 6Bar 10Bar 16Bar 25Bar 40Bar
Pressure Rating ANSI 600 LBS, 900 LBS, 150 LBS, 2500 LBS, 300 LBS, 1500 LBS
Pressure Calculation in DIN 16Bar 6Bar 25Bar 40Bar 10Bar / PN10 PN16 PN6 PN25 PN64 PN40
Production technique Forged, Heat treated and machined
Connect Type/ Flange Face Type Ring Type Joint (RTJ), Flat Face (FF), Large Male-Female (LMF), Raised Face (RF), Lap-Joint Face (LJF), Small Male-Female (SMF), Small Tongue, Large Tongue & Groove, Groove
Coating Anti-rust Paint, Zinc Plated,Oil Black Paint, Cold and Hot Dip Galvanized, Yellow Transparent
Most common types Forged / Threaded / Screwed / Plate
Uses & application
  • Nuclear power (mostly seamless).
  • Bitumen upgraders.
  • Petrochemicals and acids.
  • Heavy oil refineries.
Test Certificates EN 10204/3.1B
Raw Materials Certificate
100% Radiography Test Report
Third Party Inspection Report, etc
Export to Spain, Canada, Singapore, Indonesia, Ukraine, Ireland, Brazil, Korea, Iran, India, Saudi Arabia, Thailand, Egypt, Oman, Dubai, USA, Peru, etc
Test Hydrostatic testing machine, X-ray detector, Direct-reading Spectrograph, UI trasonic flaw detector, Magnetic particle detector
Equipment Bending machine, Pushing Machine,Press machine, electric bevelling machine, Sand-blasting machine etc
Origin Indian / West Europe / Japan / USA / Korean
Standards API7S-15, API7S-43, API605, ANSI/ASME B16.5, B16.47 Series A & B, B16.48, ASME Flanges, BS Flanges, DIN Flanges, EN Flanges, BS4504, BS 10, EN-1092, DIN, ANSI Flanges, GOST Flange, ASME/ANSI B16.5/16.36/16.47A/16.47B, MSS S44, ISO70051, JISB2220, BS1560-3.1, EN1092
Manufacturer of

ANSI DIN, GOST, JIS, UNI, BS, AS2129, AWWA, EN, SABS, NFE etc.
: -BS Flange, EN Flange, API 6A Flange, ANSI Flange, ASME Flange, DIN Flange, EN1092-1 Flange, UNI Flange, JIS/ KS Flange, BS4504 Flange, GB Flange, AWWA C207 Flange, GOST Flange, PSI Flange

  • B.S: BS4504 , BS3293, BS1560, BS10
  • German (DIN)
  • AS 2129: Table D; Table E; Table H
  • ANSI B16.5, ANSI B16.47, MSS SP44, ANSI B16.36, ANSI B16.48
  • ANSI : ANSI B16.5, ANSI B16.47(API605), MSS SP44, ANSI B16.36, ANSI B16.48
  • American standard (ANSI)
  • British standard (BS)
  • ANSI B16.5, ANSI B16.47 Series A & B, MSS SP44, ASA, API-605, AWWA, Custom Drawings
  • DIN: DIN 2527, DIN 2566, DIN 2573, DIN 2576, DIN 2641, DIN 2642, DIN 2655, DIN 2656, DIN 2627, DIN 2628, DIN 2629, DIN 2631, DIN 2632, DIN 2633, DIN 2634, DIN 2635, DIN 2636, DIN 2637, DIN 2638
  • The other standard: AWWA C207; EN1092-1, GOST12820, JIS B2220; KS B1503, SABS1123; NFE29203; UNI2276
Special design

As per your drawing

AS, ANSI, BS, DIN and JIS
15 NB (1/2") to 200 NB (8")
Equal and Reducing Configurations

A350 Lf2 Flange Price

A350 LF2 Flange Price Per Piece in India A350 Lf2 Flange Price in INR A350 Lf2 Flange Price in USD A350 Lf2 Flange Price in UAE Dirham
ASTM A350 LF2 Threaded Flange 354.60 – 70920.25 / Piece US $5-1000 / Piece UAE Dirham 18.36 – 3672.90 / Piece
A350 LF2 Flange 70.92 – 21276.07 / Piece US $1-300 / Piece UAE Dirham 3.67 – 1101.87 / Piece
A350 Lf2 Killed Carbon Steel Flange 70.92 – 70920.25 / Piece US $10-1000 / Piece UAE Dirham 3.67 – 3672.90 / Piece

Weight Of A350 Grade Lf2 Loose Flanges

CLASS Nominal Pipe Size Slip On Flange Threaded Flange Socket Weld Flange Lap Joint Flange Blind Flange Weld Neck Flange
150 lb 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
CLASS Nominal Pipe Size Slip On Threaded Socket Weld Lap Joint Blind Weld Neck
300 lb ½ 2 2 3 2 2 2
¾ 3 3 3 3 3 3
1 3 3 3 3 4 4
1¼ 4.5 4.5 4 4.5 6 5
1½ 6.5 6.5 6 6.5 7 7
2 7 7 7 7 8 9
2½ 10 10 10 10 12 12
3 13 14 13 14.5 16 18
3½ 17 17 17 17 21 20
4 23.5 24 22 24 28 26.5
5 29 31 28 28 37 36
6 39 39 39 39 50 45
8 58 58 58 58 81 69
10 81 81 81 91 124 100
12 115 115 115 140 185 142
14 165 165 165 190 250 206
16 210 220 190 234 315 250
18 253 280 250 305 414 320
20 315 325 315 375 515 400
22 370 370 370 435 640 465
24 490 490 475 550 800 580
CLASS Nominal Pipe Size Slip On Threaded Socket Weld Lap Joint Blind Weld Neck
400 lb ½ 2 2 2 2 2 3
¾ 3 3 3 3 3 3.5
1 3.5 3.5 3.5 3.5 4 4
1¼ 4.5 4.5 4.5 4.5 6 4.5
1½ 6.5 6.5 6.5 6.5 8 8
2 8 8 8 8 10 10
2½ 12 12 12 11 15 14
3 15 15 15 14 20 18
3½ 21 21 21 20 29 26
4 26 26 26 25 33 35
5 31 31 31 29 44 43
6 44 44 44 42 61 57
8 67 67 67 64 100 89
10 91 91 91 110 155 125
12 130 130 130 152 226 175
14 191 191 191 210 310 233
16 253 253 253 280 398 295
18 310 310 310 345 502 360
20 378 378 378 420 621 445
22 405 405 405 455 720 505
24 539 539 539 615 936 640
CLASS Nominal Pipe Size Slip On Threaded Socket Weld Lap Joint Blind Weld Neck
600 lb ½ 2 2 2 2 3 3
¾ 3 3 3 3 4 4
1 4 4 4 4 4 4
1¼ 5 5 5 5 6 6
1½ 7 7 7 7 8 8
2 9 9 9 9 10 12
2½ 13 13 13 12 15 18
3 16 16 16 15 20 23
3½ 21 21 21 20 29 26
4 37 37 37 36 41 42
5 63 63 63 63 68 68
6 80 80 80 78 86 81
8 115 15 15 112 140 120
10 177 177 177 195 231 190
12 215 215 215 240 295 226
14 259 259 259 290 378 347
16 366 366 366 400 527 481
18 476 476 476 469 665 555
20 612 612 612 604 855 690
22 590 590 590 670 1000 720
24 876 876 876 866 1250 977
CLASS Nominal Pipe Size Slip On Threaded Socket Weld Lap Joint Blind Weld Neck
900 lb ½ 6 6 6 6 4 7
¾ 6 6 6 6 6 7
1 7.5 7.5 7.5 7.5 9 8.5
1¼ 10 10 10 10 10 10
1½ 14 14 14 14 14 14
2 22 22 22 21 25 24
2½ 31 31 31 25 32 31
3 36 36 36 29 35 36
4 53 53 53 51 54 53
5 83 83 83 81 87 86
6 110 110 110 105 115 110
8 172 172 172 190 200 187
10 245 245 245 277 290 268
12 326 326 326 371 415 372
14 400 400 400 415 520 562
16 459 459 459 488 619 685
18 647 647 647 670 880 924
20 792 792 792 868 1107 1164
24 1480 1480 1480 1659 2099 2107
CLASS Nominal Pipe Size Slip On Threaded Socket Weld Lap Joint Blind Weld Neck
1500 lb ½ 6 6 6 6 4 7
¾ 6 6 6 6 6 7
1 8 8 8 8 9 9
1¼ 10 10 10 10 10 10
1½ 14 14 14 14 14 14
2 25 25 25 25 25 25
2½ 36 36 36 35 35 36
3 48 48 48 47 48 48
4 73 73 73 75 73 73
5 132 132 132 140 140 132
6 165 165 165 170 160 165
8 260 260 260 286 302 275
10 436 436 436 485 510 455
12 667 667 667 749 775 690
14 940 940 940 890 975 940
16 1250 1250 1250 1250 1300 1250
18 1625 1625 1625 1475 1750 1625
20 2050 2050 2050 1775 2225 2050
24 2825 2825 2825 2825 3625 3325
CLASS Nominal Pipe Size Slip On Threaded Socket Weld Lap Joint Blind Weld Neck
2500 lb ½ …. 7 …. 7 7 8
¾ …. 9 …. 8 10 9
1 …. 12 …. 12 12 13
1¼ …. 18 …. 17 18 20
1½ …. 25 …. 24 25 28
2 …. 38 …. 37 39 42
2½ …. 55 …. 53 56 52
3 …. 83 …. 80 86 94
4 …. 127 …. 122 133 146
5 …. 210 …. 204 223 244
6 …. 323 …. 314 345 378
8 …. 485 …. 471 533 576
10 …. 925 …. 897 1025 1068
12 …. 1300 …. 1262 1464 1608

Stockholder of ASTM A350 lf2 killed carbon steel flanges in Kolkata, A350 Gr Lf2 Cl1 Reducing flanges suppliers in India

Sa350 Steel Flanges Pressure Chart

ANSI/ASME B16.34 ANSI PRESSURE RATING
Temperature °F 150# 300# 400# 600# 900# 1500# 2500#
-20 to 100 265 695 925 1390 2085 3470 5785
200 260 680 905 1360 2035 3395 5660
300 230 655 870 1305 1955 3260 5435
400 200 640 855 1280 1920 3200 5330
500 170 620 830 1245 1865 3105 5180
600 140 605 805 1210 1815 3025 5040
650 125 590 785 1175 1765 2940 4905
700 110 570 755 1135 1705 2840 4730
750 95 530 710 1065 1595 2660 4430
800 80 510 675 1015 1525 2540 4230
850 65 485 650 975 1460 2435 4060
900 50 450 600 900 1350 2245 3745
950 35 280 375 560 845 1405 2345
1000 20 165 220 330 495 825 1370

A350 Lf2 Flange Dimensions

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
ANSI B16.5 ANSI 150 89 60 4 13 16
ANSI 300 95 67 4 13 16
ANSI 600 95 67 4 13 16
ANSI 900 121 83 4 19 22
ANSI 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

Different Types of ASTM A350 lf2 killed carbon steel flanges

A350 Lf2 Class 1 Weld Neck flange
A350 Lf2 Class 1 Weld Neck flange
Sa 350 Lf2 Socket Weld Flanges
Sa 350 Lf2 Socket Weld Flanges
ASTM A350 lf2 killed carbon steel flanges
ASTM A350 lf2 killed carbon steel flanges
A350 Gr Lf2 Cl1 Reducing flanges
A350 Gr Lf2 Cl1 Reducing flanges
A350 Lf2 Material
A350 Lf2 Material
LTCS A350 LF2 Flanges
LTCS A350 LF2 Flanges
Sa350 Steel Flanges
Sa350 Steel Flanges
ASTM A350 Gr Lf2 Orifice Flange
ASTM A350 Gr Lf2 Orifice Flange
Sa 350 Gr Lf2 Cl1 Pipe Flanges
Sa 350 Gr Lf2 Cl1 Pipe Flanges
Asme Sa350 Threaded Flanges
Asme Sa350 Threaded Flanges
A350 Grade Lf2 Loose Flanges
A350 Grade Lf2 Loose Flanges
ASTM A350 Slip-On Flange, RF, 150LB, ANSI
ASTM A350 Slip-On Flange, RF, 150LB, ANSI
Lf2 Carbon Steel Socket Weld Flanges
Lf2 Carbon Steel Socket Weld Flanges
ASTM A350 Forged Blind Flange, PN50, RF
ASTM A350 Forged Blind Flange, PN50, RF
ANSI B16.48 Spade Flange, A350 LF2 CL1, PN50, DN750, Flat Face
ANSI B16.48 Spade Flange, A350 LF2 CL1, PN50, DN750, Flat Face
ANSI B16.5 Weld Neck Flange, CS A350, CL150, 4IN, Black Treatment
ANSI B16.5 Weld Neck Flange, CS A350, CL150, 4IN, Black Treatment
View A350 Lf2 Material Dimensions, View LTCS A350 LF2 Flanges Sizes

Thermal Expansion of LTCS A350 LF2 Flanges

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

A350 Lf2 Chemical Composition

C%
Mn%
Si%
S%
P%
Cr%
Ni%
0.30 max
0.6/1.35
.15/.30
.040 max
.035 max
0.30 max
0.40 max

Sa350 Gr Lf2 Mechanical Properties

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)
Leading Manufacturer of Sa350 Steel Flanges, View Pressure Rating of ASTM A350 Gr Lf2 Orifice Flange

Requirements and Materials country wise

ASTM A350 lf2 class 1 rf class 300 blind flanges Chile, South Africa, China, United Kingdom -UK
ANSI B16.5 SORF Flange LF2 DN600 CLASS 150 United Arab Emirates (UAE), Bahrain, Philippines, UK
astm a350 lf2 class 1class 300 blind flanges Netherlands, Philippines, Malaysia, Philippines
blind flange RF 18" 150LB, sch40 ASTM A350 Grade LF2 Egypt, Oman, Sweden, Europe
WN RF Flange 24" Class900 SCH100 ASTM A350-LF2 cl 1 ASME B16.5 Australia, Germany, Malaysia, Spain
carbon steel 150 lb a350 lf2 ansi welding neck flange Malaysia, USA, Singapore, Europe
class 300 RF A350 LF2 carbon steel flange Italy, Saudi Arabia (KSA), Japan, Canada
asme a16.5 astm A350 Lf2 carbon steel plate flat weld steel pipe flange Turkey, South Africa, Colombia, Malaysia
astm a350 lf2 blind pipe flange blanks Malaysia, Thailand, Taiwan, Mexico
A350 LF2 material 4 inch SCH40 class600 or PN110 WN welding neck flange UK, Bangladesh, South Korea, Malaysia
DN150 FLANGE WN ASME B16.5 CL 150 RF ASTM A350 LF2 CL 1 SCH 40 Singapore, Kuwait, Romania, Poland
Astm a350 Lf2 Cl1 Cl2 Blind Flange Iran, Singapore, Malaysia, Canada
ASME B16.5 astm a350 lf2 steel 6 inch pipe flange Norway, Finland, Los Alamos -Mexico, Singapore
a350 gr lf2 low temperature carbon steel forged flanges Russia, Brazil, NY 12203 (USA), Ellington -United States
blind flange 24" class 150 a350 gr lf2 Hong Kong, UAE, Dammam -KSA, Singapore
FLANGE WN CL.600 RF Sch.160 ASTM A350-LF2 ASME B16.5 Dubai, Nigeria, Qatar, Malaysia
150# RF SCH 80 ASME B16.5 ASTM A350 LF2 CL 1 LTCS WN Flange Malaysia, UAE, Czechia, Belgium
A350 Lf2 Class 900 Rtj Ring Type Joint Flange UK, Indonesia, Malaysia, Thailand
Astm A350 lf2 Class150 Blind Flange Philippines, France, Europe, Malaysia