ASTM A350 Lf2 Flanges

ASME SA350lf2 Carbon Steel Blind Flange and A350 Gr Lf2 Cl1 Slip On Flanges manufacturer in India

ASTM A350 Gr Lf2 Flanges

Saudi Aramco approved ASTM A350 Lf2 Flanges manufacturer in India, producing accordance to ANSI / ASME B16.5, B16.48, B16.47, BS 10, BS4504, and EN-1092-1 specification

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.

Material Specification of ASTM A350 Lf2 Flanges

Manufacturer and exporter of ASTM A350 Lf2 Cl1 Lap Joint and Socket Weld Flanges in Raised Face (RF), Flate Face (FF), and Ring Type Joint (RTJ)

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

A350 Flange Price List

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

Most Popular Types Of SA350 lf2 flanges

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

ASTM A350 Gr Lf2 Cl1 Flange Weight Chart

Buy directly from ASTM A350 Flanges manufacturers in India for high quality and better price
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

A350 LF2 Welding neck flange Thermal Properties

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 class 1 flange Pressure Rating

Check online price of ASTM A350 Gr Lf2 Cl1 Carbon Steel Pipe Flanges material ex Mumbai
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

Chemical composition of Carbon Steel A350 LF2 Flanges

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

SA350lf2 Cl1 Blind Flange Mechanical Strength Table

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)

Carbon Steel A350 Lf2 Flanges manufacturers in India

A350 Lf2 Welding Neck Flange manufacturer