Fastwell Fittings and Flanges Division
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ASTM A350 LF2 Flanges

manufacturer Of Carbon Steel A350 LF2 Weld Neck/ Blind/ Slip On Flanges For Oil And Gas Industry


ASTM A350 LF2 Flanges

Flanges are used to connect tubes and pipes of various diameters and allows free flow of fluids and gases through them without any leakage. One such type of flange is ASTM A350 LF2 Flanges. They are forged between the temperature range of 900 degrees C to 1200 degrees C. As per ASTM A350 LF2 Blind Flanges manufacturer In India the soak time of these flanges needs to be minimum. Post forging these Carbon Steel A350 LF2 Weld Neck Flange need to be cooled in still air. It offers moderate strength and impact toughness. They are widely used in applications that require cold temperature services and resistance to corrosion is not important. 

ASTM A350 LF2 Slip On Flanges does not have a hub or a boring center and is readily weldable. It has a face thickness of a flange and a similar bolting pattern. LTCS Flanges are a standard specification for carbon steel or low alloy steel. Low Temperature Carbon Steel Flanges are usually supplied in normalized, quenched, and tempered, or normalized and tempered conditions. LTCS A350 LF2 Socket Weld Flanges offer good machinability and are said to be durable. They are dependent on operations such as sawing, milling, broaching, and turning. 

ASME SA350 Lf2 Plate Flanges have aluminum in trace amount in fine grain size. The toughness difference in A350 LF2 Carbon Threaded Flanges can be explained by the cooling rate post normalizing with fast air cooling showing high toughness and still air cooling showing low toughness. Low Temperature Carbon Steel (LTCS) Lap Joint Flanges with regular strength quench and temper operations are not required to obtain good low temperature toughness. Whereas, forced air cooling of ASTM A350 LF2 Lap Joint Flange after normalizing is the minimum cooling rate.


Table Of Content:




exporter And supplier Of LTCS A350 LF2 Socket Weld Flanges As Per EN 1092-1/ AWWA C207/ BS 4504 Standards, Check Price List & Thickness Calculation


A350 Lf2 Flanges Price


Type Of Flanges Size SCH Class Material Price In INR (India) Per Piece
Blind Flange 3/4" Sch 40 150 A350 Lf2 150.00
Blind Flange 3/4" Sch 40 150 - 223.00
Blind Flange 1" Sch 40 150 A350 Lf2 346.00
Blind Flange 1-1/2" Sch 40 150 - 403.00
Blind Flange 2" Sch 40 150 A350 Lf2 500.00
Blind Flange 3" Sch 40 150 - 578.00
Blind Flange 4" Sch 40 150 A350 Lf2 789.00
Socket Weld Flange 3/4" SCH XS 300 ASTM A350 Lf2 150.00
Socket Weld Flange 1” SCH XS 300 - 200.00
Socket Weld Flange 1-1/2" SCH XS 300 A350 Lf2 368.00
Socket Weld Flange 2" SCH XS 300 - 537.00
Socket Weld Flange 3" SCH XS 300 A350 Lf2 646.00
Socket Weld Flange 4" SCH XS 300 - 890.00
Slip On Flange 1 /1/2" 80 150 ASTM A350 Lf2 300.00
Slip On Flanges 2" 80 150 - 479.00
Slip On Flanges 3" 80 150 A350 Lf2 590.00
Slip On Flanges 4" 80 150 - 864.00
Slip On Flanges 6" 80 150 ASTM A350 Lf2 1096.00
Weld Neck Flange 2" SCH STD 150 A350 Lf2 363.00
Weld Neck Flange 3" SCH STD 150 - 485.00
Weld Neck Flange 4" SCH STD 150 A350 Lf2 689.00
Weld Neck Flange 6" SCH STD 150 - 863.00
Weld Neck Flange 8" SCH STD 150 A350 Lf2 1126.00
Weld Neck Flange 10" SCH STD 150 A350 Lf2 1568.00

ISO Approved ASTM A350 LF2 Flanges Manufacturer In India. For final A350 LF2 Carbon Steel Flange Price List Please Call on +91-9987870874 or drop an Email to info@fastwell.in.

A350 Lf2 Flange Dimensions


NPS(O.D.) For
Outside Diameter		Minimum (Wall Thickness)
(T)		Diameter Of Raised Face (RF)
(R)		Number of Bolts HolesDia. of HolesB.C. For
(Bolt Circle)		SORF Bore I.D.
(SB)		WNRF Bore I.D.
(WB)		Diameter Of Hub Base
(H.B.)		Diameter of Hub Top
(H.T.)		SORF Length
(S.L.)		WNRF Length
(W.L.)
1⁄23.500.381.3840.622.380.880.621.190.840.561.81
3⁄43.880.441.6940.622.751.090.821.501.050.562.00
14.250.502.0040.623.121.361.051.941.320.622.12
11⁄44.620.562.5040.623.501.701.382.311.660.752.19
11⁄25.000.622.8840.623.881.951.612.561.900.812.38
26.000.693.6240.754.752.442.073.062.380.942.44
21⁄27.000.814.1240.755.502.942.473.562.881.062.69
37.500.885.0040.756.003.573.074.253.501.122.69
31⁄28.500.885.5080.757.004.073.554.814.001.192.75
49.000.886.1980.757.504.574.035.314.501.252.94
510.000.887.3180.888.505.665.056.445.561.383.44
611.000.948.5080.889.506.726.077.566.631.503.44
813.501.0610.6280.8811.758.727.989.698.631.693.94
1016.001.1212.75121.0014.2510.8810.0212.0010.751.883.94
1219.001.1915.00121.0017.0012.8812.0014.3812.752.124.44
1421.001.3116.25121.1218.7514.1413.2515.7514.002.194.94
1623.501.3818.50161.1221.2516.1615.2518.0016.002.444.94
1825.001.5021.00161.2522.7518.1817.2519.8818.002.625.44
2027.501.6223.00201.2525.0020.2019.2522.0020.002.815.62
2229.501.7525.25201.3827.2522.2221.2524.2522.003.075.82
2432.001.8127.25201.3829.5024.2523.2526.1224.003.195.94

Some Of The Major Locations We Have Supplied ASTM A350 LF2 Flanges:


Malaysia, United Kingdom -UK, Europe, UAE

ASTM A350 Lf2 Flanges

Europe, United Kingdom -UK, Malaysia, UAE

Philippines, Indonesia, Dammam -KSA,

A350 Lf2 Welding Neck Flange

Dammam -KSA, Indonesia, Philippines

Qatar, Europe, Thailand, France

Blind Flange A350 Lf2

Thailand, France, Qatar, Europe

Bangladesh, Germany, Finland, USA

LTCS Flanges

Bangladesh, USA, Germany, Finland

South Africa, Brazil, Saudi Arabia (KSA), Kuwait

ASTM A350 Lf2 Slip On Flanges

Saudi Arabia (KSA), South Africa, Brazil, Kuwait

Australia, Nigeria, Turkey, UK, Belgium, Egypt

Low Temperature Carbon Steel Flanges

Australia, Egypt, UK, Nigeria, Turkey, Belgium

Hong Kong, Spain, Oman, Mexico, Poland, Japan

Carbon Steel A350 Lf2 Flanges

Mexico, Spain, Hong Kong, Poland, Oman, Japan

Iran, Italy, Chile, Singapore, Canada, China

ASME SA350 Lf2 Class 2 Flange

Canada, Italy, Singapore, Iran, Chile, China


ASTM A350 Gr.lf2 Chemical Composition


ElementComposition, w.t % Grades
S≤0.040
Si0.15-0.30
Ni≤0.40
Cr≤0.30
Mo≤0.12
Cb≤0.02
V≤0.08
N...
C≤0.30
Mn0.60-1.35
P≤0.035
Cu≤0.40

We Keep Bulk Stock Of Low Temperature Carbon Steel Flanges At Our Stockyard, Contact Us For Free Sample And Specification List. View A350 LF2 PDF


ASTM A350 Lf2 Material Specification


Specification ChecklistASTM A350 LF2 Flanges
Hardness (HBW)197
Size DetailsNPS 1⁄₂" To NPS 48” Inch
A350 Lf2 Chemical CompositionS (≤0.040), Mn (0.60-1.35), P (≤0.035), Cr (≤0.30), Si (0.15-0.30), Ni (≤0.40), C (≤0.30) etc.
Face Type(RF)/ (RTJ)/ (FF)
Temperature Range150LB/ 300LB/ 400LB/ 600LB/ 900LB/ 1500LB To 2500LB.
PDO Approved Manufacturer Types Of LF2 Flanges:Blind/ Slip On/ Weld Neck/ Lap Joint/ Threaded/ Socket Weld/ Reducing
ThicknessSCH 180, SCH 80, SCH 40, SCH 160, SCH 120, SCH 5S, SCH 10, XXS etc.
Standard Dimensions OfAPI/ EN 1092-2/ DIN 2561/ DIN 2501/ DIN 2527/ EN 1092-1/ P235GH
Melting Point360

A350 Lf2 Temperature Range


Temperature In °F150# According To ASME B16.5300# According To ASME B16.5400# According To ASME B16.5600# According To ASME B16.5900# According To ASME B16.51500# According To ASME B16.52500# According To ASME B16.5
-20 to 1002757209601440216036006000
2002306008001200180030005000
3002055407201080162027004500
400190495660995149024854140
500170465620930139523303880
600140435580875131021853640
650125430575860129021503580
700110425565850127521253540
75095415555830124520753460
80080405540805121020153360
85065395530790119019803300
90050390520780116519453240
95035380510765114519103180
10002032043064096516052675
10502031041061592515452570
11002025534551577012852145
1150202002654005959951655
1200201552053104657701285
125020115150225340565945
13002085115170255430715
1350206080125185310515
140020506595145240400
145015354570105170285
15001025355580135230

A350 Lf2 Material Hardness


Hardness, maximum
HBW 197

Carbon Steel A350 Lf2 Flanges Weight Chart


Nominal Pipe Size For (NPS)Slip On Flanges (SORF)Threaded Flanges (NPT)Socket Weld Flanges (SWRF)Lap Joint Flanges (Loose)Blind Flanges (BLRF)Weld Neck Flanges (WNRF)
½112122
¾222222
1222223
1¼333333
1½333344
2555556
2½8888710
39999911.5
3½111211111312
4131313131716.5
5151515152021
6191919192726
8303030304742
10434343437054
126464646412388
14909090105140114
161069898140180140
18130130130160220165
20165165165195285197
22185185185245355225
24220220220275430268

Always Refer ASME SA350 Lf2 Plate Flanges Dimensions And Schedule Chart, Buy A350 LF2 Carbon Threaded Flanges At An Affordable Price In India

A350 Lf2 Welding Neck Flange Dimensions


A350 Lf2 Welding Neck Flange Dimensions
Size (NPS) in Inches NPS (Normal Pipe Size) Size in MillimeterOuter Diameter For (O.D.) Thickness Of Weld Neck FlangeHub Outer DiameterWeld Neck Outer DiameterLength Of ASME B16.5 Welding NeckDaimeter Of WN BoreDiameter Of RF (Raised Face) Raised Face (RF) HeightPCDFace Of Weld
ABCDEFGHIJ
1/215909.63021.346-34.9260.31.6
3/42010011.23826.75142.9269.91.6
12511012.74933.45450.8279.41.6
1 1/43211514.35942.25663.5288.91.6
1 1/24012515.96548.36073298.41.6
25015017.57860.36292.12120.71.6
2 1/26518020.7907368104.82139.71.6
38019022.310888.9681272152.41.6
3 1/29021522.3122101.670139.72177.81.6
410023022.3135114.375157.22190.51.6
512525522.3164141.387185.72215.91.6
615028023.9192168.387215.92241.31.6
820034527246219.1100269.92298.51.6
1025040528.6305273100323.823621.6
1230048530.2365323.81133812431.81.6
1435053533.4400355.6125412.82476.31.6
1640059535457406.4125469.92539.81.6
1845063538.1505457.2138533.42577.91.6
2050070041.3559508143584.226351.6
2460081546.1663610151692.22749.31.6

All Types Of Polished Low Temperature Carbon Steel (LTCS) Lap Joint Flanges manufacturer In Mumbai, ASTM A350 LF2 Lap Joint Flange Available In Class 150 to 2500# Pressure Rating.

Blind Flange A350 LF2 Dimensions


Blind Flange A350 LF2 Dimensions
NPS For (Normal Pipe Size)Outside Daimeter Of (O.D.)
(A)		Wall Thickness Of (B)
Daimeter Of Raised Face
(C)		(D)
(B.C.D.)		# Flanges Bolts
Holes		Daimeter Of Bolt Holes
Approx.
Weight In KG (Kilogram)
1/2"3-1/27/161-3/82-3/845/82
3/4"3-7/81/21-11/162-3/445/82
1"4-1/49/1623-1/845/82
1-1/4"4-5/85/82-1/23-1/245/83
1-1/2"511/162-7/83-7/845/83
2"63/43-5/84-3/443/44
2-1/2"77/84-1/85-1/243/47
3"7-1/215/165643/49
3-1/2"8-1/215/165-1/2783/413
4"915/166-3/167-1/283/417
5"1015/167-5/168-1/287/820
6"1118-1/29-1/287/827
8"13-1/21-1/810-5/811-3/487/847
10"161-3/1612-3/414-1/412167
12"191-1/41517121123
14"211-3/816-1/418-3/4121-1/8139
16"23-1/21-7/1618-1/221-1/4161-1/8187
18"251-9/162122-3/4161-1/4217
20"27-1/21-11/162325201-1/4283
24"321-7/827-1/429-1/2201-3/8415

Schedule 40 Flange A350 Gr.lf2 Size Chart


(NPS) For Nominal Pipe Size In
(inches)		As Per ASME B16.5 Class 150
Flange Diameter
In (inch)		Bolts Number
Bolt Diameter
In (inch)		Bolt Holes (B.H.) Diameter In
(inch)		Bolt Circle (B.C.)
In(inch)
1/43-3/841/20.622-1/4
1/23-1/241/20.622-3/8
3/43-7/841/20.622-3/4
14-1/441/20.623-1/8
1-1/44-5/841/20.623-1/2
1-1/2541/20.623-7/8
2645/80.754-3/4
2-1/2745/80.755-1/2
37-1/245/80.756
3-1/28-1/285/80.757
4985/80.757-1/2
51083/40.888-1/2
61183/40.889-1/2
813-1/283/40.8811-3/4
1016127/8114-1/4
1219127/8117
14211211.1218-3/4
1623-1/21611.1221-1/4
1825161-1/81.2522-3/4
2027-1/2201-1/81.2525
2432201-1/41.3829-1/2

Pipe Flange A350 Lf2 Tensile Properties


LF2 CL1 Tensile Strength minimum
MPa 485–655
ksi 70–95

Face Types Of Flange Material A350 Lf2


Types of Flanges Faces DIN And EN 1092-1
(RF) For Raised Fac Form B2
DIN2512 Tongue Flanges Form C
DIN 2513 Female Flanges Form F
(RF) For Raised Face Form B1
(RF) For Raised Face Form B1
Without (RF) Raised Face Form A
DIN 2512 Groove Flanges Form D
DIN 2513 Male Flanges Form E


ASTM A350 Gr. Lf2 Cl.1 Measurement


  • C For Thickness of flange
  • X For Hub Diameter at base
  • Q For (Minimum) diameter of bolt circle
  • O For Outside Diameter of flange
  • T For (Minimum) thread length
  • Y For Length through hub
  • R For Diameter of raised face

ASTM A350 Grade Lf2 Class 1 Specific Heat


Specific Heat (Btu/lb/Deg F - [32-212 Deg F]) 0.107

LTCS Flange Material Bolting Length


Size in (Inches)Size in (Millimeter)Number of BoltsBolt (UNC) SizeRF (Raised Face) Stud Length Stud (ISO) SizeMachine Flange Bolt Length
1/21541/255M1450
3/42041/265M1450
12541/265M1455
1 1/43241/270M1455
1 1/24041/270M1465
25045/885M1670
2 1/26545/890M1675
38045/890M1675
3 1/29085/890M1675
410085/890M1675
512583/495M2085
615083/4100M2085
820083/4110M2090
10250127/8115M24100
12300127/8120M24100
14350121135M27115
16400161135M27115
18450161 1/8145M30125
20500201 1/8160M30140
24600201 1/4170M33150

A350 Flange Gasket Size Chart


NPS For (Normal Pipe Size)Gasket (I.D.) Inside Daimeter
Gasket (O.D.) Outside Daimeter
#150LB #300LB #400LB #600LB #900LB
1/2"0.841.8752.1252.1252.1252.50
3/4"1.062.252.6252.6252.6252.75
1"1.312.6252.8752.8752.8753.125
1 1/4"1.6633.253.253.253.50
1 1/2"1.913.3753.753.753.753.875
2"2.384.1254.3754.3754.3755.625
2 1/2"2.884.8755.1255.1255.1256.50
3"3.505.3755.8755.8755.8756.625
4"4.506.8757.1257.007.6258.125
5"5.567.758.508.3759.509.75
6"6.628.759.8759.7510.5011.375
8"8.621112.12512.0012.62514.125
10"10.7513.37514.2514.12515.7517.125
12"12.7516.12516.62516.5018.0019.625

Melting Point Of 6 Inches Low Temperature Carbon Steel Flanges


Melting Point (Deg F) 2740

Lf2 Flanges Yield Properties


LF2 CL1 Yield Strength minimum
MPa 250
ksi 36

SA 350 Gr Lf2 Cl1 Marking


ASTM A350 LF2 Flanges Marking includes ANSI Or ASME/ ASA Code

  1. Name of Manufacturer = (Fastwell Engineering)
  2. NPS = (6 Inch)
  3. Flanges Type = (Weld Neck)
  4. Schedule = (SCH 120)
  5. Material Designation = (ASTM A350 LF2)
  6. Class = (300#)
  7. Country Name = (Made In India)
SA 350 Gr Lf2 Cl1 Marking


SA 350 Gr Lf2 Slip On Flanges Dimensions


SA 350 Gr Lf2 Slip On Flanges Dimensions
Normal Pipe Size For (NPS)(Inside Diameter) For I.D.O.D. For (Outside Daimeter)B.C. For (Circle Bolt)Raised
(R)		RF For (Raised Face)H For (Hight)Raised Face Wall ThicknessThickness1Flat Face (FF)
(Thickness2)		Bolts Holes For
(B.C.)		Number Of Bolt Hole
(B.H.)
1/20.883.502.381.38.0631.19.62.38.56.624
3/41.093.882.751.69.0631.50.62.44.56.624
11.364.253.122.00.0631.94.69.50.63.624
1-1/41.704.623.502.50.0632.31.81.56.75.624
1-1/21.975.003.882.88.0632.56.88.62.82.624
22.446.004.753.62.0633.061.00.69.94.754
2-1/22.947.005.504.12.0633.561.12.821.06.754
33.577.506.005.00.0634.251.19.881.13.754
3-1/24.078.507.005.50.0634.811.25.881.19.758
44.579.007.506.19.0635.311.31.881.25.758
55.6610.008.507.31.0636.441.44.881.38.888
66.7211.009.508.50.0637.561.56.941.50.888
88.7213.5011.7510.62.0639.691.751.061.69.888
1010.8816.0014.2512.75.06312.001.941.131.881.0012
1212.8819.0017.0015.00.06314.382.191.192.131.0012
1414.1421.0018.7516.25.06315.752.251.322.191.1212
1616.1623.5021.2518.50.06318.002.501.382.441.1216
1818.1825.0022.7521.00.06319.882.691.502.631.2516
2020.2027.5025.0023.00.06322.002.881.632.831.2520
2222.2229.5027.2525.25.06324.253.131.753.071.3820
2424.2532.0029.5027.25.06326.123.251.823.191.3820

SCH 80 ASTM A350 Lf2 Cl1 Flanges Mechanical Properties


Grade/Class Tensile Strength Yield Strength, min. Elongation, min. Hardness, max.
ksi MPa ksi MPa % HBW
LF2 CL1 Flanges 70–95 485–655 36 250 22 197
LF2 CL2 Flanges 70–95 485–655 36 250 22 197

Packaging Of A350 Lf2 Cl1 Pipe Flange


a350 lf2 cl1 pipe flange packaging
a350 lf2 flange packaging


Application Of A350 Lf2 Cl1 Material For Piping


  • Low Temperature Carbon Steel Flanges For Fluid Piping
  • Low Temperature Carbon Steel (LTCS) Flanges For Modern Architecture
  • ASTM A350 LF2 Blind Flanges For Heat Exchanger
  • ASTM A350 LF2 Flanges For Dairy And Food Processing
  • Carbon Steel A350 LF2 Weld Neck Flange For Power Plants
  • ASTM A350 LF2 Slip On Flanges For Oil And Gas Industry
  • LTCS Flanges For Pulp And Paper Industry


Density Of A350 Lf2 Material


Density (lb / cu. in.) 0.284

Torque Specs Of ASTM A350 Lf2 Flanges


Flanges Size in (Inches)Flanges Size in (Millimeter)Radial Projection (Maximum)
No Deeper Than the Bottom In MMDeeper Than the Bottom In MM
1/2153.01.5
3/4203.01.5
1253.01.5
1 1/4323.01.5
1 1/2403.01.5
2503.01.5
2 1/2653.01.5
3804.51.5
3 1/2906.03.0
41006.03.0
51256.03.0
61506.03.0
82008.04.5
102508.04.5
123008.04.5
143508.04.5
1640010.04.5
1845012.06.0
2050012.06.0
2460012.06.0

ASME A350 Lf2 Flange Elongation


LF2 CL1 Elongation, minimum
% 22

Class 150 WN Flange A350 LF2 Hardness


Hardness, maximum
HBW 197

ANSI/ ASME B16.5 ASTM A350 Lf2 Class 2 Charpy V-Notch Impact Properties


Charpy V-Notch Energy Requirements for 10x10 mm Specimens
Grade/ Class *A *B
ft*lbf J ft*lbf J
LF2 CL1 Flanges 15 20 12 16
LF3 CL1 Flanges 15 20 12 16

LF2 CL1 Standard Impact Test Temperature


Standard Impact Test Temperature
Name Of Grade And Class Test Temperature
°F °C
LF2 CL1 Flange -50 -46
LF2 CL2 Flange -0 -18

ASTM A350 LF2 Equivalent Material


Standard Size3/4" Size2/3" Size1/2" Size1/3" Size1/4" Size
10x10 millimeter10x7.5 millimeter10x6.6 millimeter10x5 millimeter10x3.3 millimeter10x2.5 millimeter
10 [14]8 [11]7 [10]5 [7]3 [5]3 [5]
12 [16]10 [14]9 [12]7 [10]4 [6]3 [5]
13 [18]10 [14]9 [12]7 [10]5 [7]4 [6]
15 [20]12 [16]10 [14]8 [11]5 [7]4 [6]

Types Of ASTM A350 LF2 Flanges


SA350 LF2 Blind Flanges

SA350 LF2 Blind Flanges

ASTM A350 Gr Lf2 Class 1 Slip On Flanges

ASTM A350 Gr Lf2 Class 1 Slip On Flanges

A350 Grade LF2 Weld Neck Flanges

A350 Grade LF2 Weld Neck Flanges

Carbon Steel A350 LF2 Threaded Flanges

Carbon Steel A350 LF2 Threaded Flanges

Low Temperature Carbon Steel Raised Face Flanges

Low Temperature Carbon Steel Raised Face Flanges

LTCS Ring Type Joint (RTJ) Flanges

LTCS Ring Type Joint (RTJ) Flanges

CS A350 LF2 Spectacle Blind Flange

CS A350 LF2 Spectacle Blind Flange

Grade Lf2 CL 1 Orifice Flanges

Grade Lf2 CL 1 Orifice Flanges

LTCS A350 LF2 Puddle Flange

LTCS A350 LF2 Puddle Flange

A350 LF2 CL1 Socket Weld Flanges

A350 LF2 CL1 Socket Weld Flanges

SA350 LF2 CL1 Plate Flanges

SA350 LF2 CL1 Plate Flanges

A350 LF2 Carbon Steel Lap Joint Flanges

A350 LF2 Carbon Steel Lap Joint Flanges


Material


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