ASTM A350 LF2 Flanges

ASTM A350 LF2 Flanges

ASTM A350 LF2 is a standard specification for carbon and low alloy steel forged flanges. The  ASTM A350 LF2 flanges  are designed with a chemical composition of chromium, molybdenum, copper, niobium, vanadium and other constituting alloys. This gives the  ASTM A350 LF2 lap joint flange  good resistance against corrosive and oxidative reducers seen in different conditions.

The  ASTM A350 LF2 Cl1 forged flange  is designed to work in lower temperature service. These flanges have an impact test temperature up to -45 degrees C. ASME SA 350 LF2 plate flange is available in classes 1, 2, and 3. These flanges are designed with sizes of 1/2 to 24 NB. The  SA350 LF2 Cl1 reducing flange  is designed in pressure classes of 150#, 300#, 600#, 900#, 1500#, and 2500#. These flanges have schedules between SCH 10 to SCH 160 and XXS. The  A350 Gr LF2 lapped joint flange can be custom designed in different dimensions.

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SA 350 LF2 Blind Flange and ASTM A350 LF2 Cl1 Forged Flange suppliers in UAE

ASTM A350 LF2 flanges specification


ASTM A350 lf2 flanges specifications

USA – ASME /ASTM specification LF2 flange manufacturing size range Applicable temperature
  • ASTM A350 LF2 class 1
  • ASTM A350 LF2 class 2
  • SA 350 Gr LF2
  • 1/2″ to 48″
  • PN 2.5 – PN 400
  • 15NB – 1200NB

For larger sizes please contact above ASTM A350 LF2 flanges manufacturers & suppliers in UAE

  • ASTM A350 gr LF2 class 1: -50°F [-46°C]
  • ASTM A350 gr LF2 class 2:  -0°F [-18°C]
Coating types Types Pressure class
  • Alloy material coated (Clad/ Lined)
  • Electro galvanizing coating (Thickness 20-30μm)
  • Black phosphating treatment
  • Anti-rust painting
  • Oil Varnished
  • Hot dip galvanized (Thickness 200μm)
  • Electric zinc coated (Yellow zinc/ white)
  • ASTM A350 LF2 socket weld flanges
  • UNS K03011 reducing flange
  • A350 Grade LF2 blind flanges
  • A350 LF2 slip on flanges
  • A350 LF2 steel LWN flanges (Long weld neck)
  • SA350 LF2 weld neck flanges
  • ASTM A350 LF2 cl1 lap joint flanges
  • A350lf2cl1 threaded flanges
  • CL 150
  • CL 300
  • CL 600
  • CL 900
  • CL 1500
  • CL 2500
Types of ASTM A350 Gr LF2 blind flanges Types of A350 Gr LF2 cl 1 weld neck flange Types of A350 LF2 cl 1 slip on flanges
  • SA 350 Gr LF2 CL1 threaded blind flange
  • A350 LF2 carbon steel flat face blind flange
  • SA 350 Gr LF2 raised face blind flange
  • ASME SA350 LF2 ring type joint blind flange
  • ASME A350 LF2 forged blind flange
  • SA 350 LF2 CL 1 flat face weld neck flange
  • LF2 class 1 raised face weld neck flange
  • ASTM A350 Grade LF2 ring type joint weld neck flange
  • SA350 steel long weld neck flange
  • A350 carbon steel threaded slip on flange
  • A350 Gr LF2 flat face slip on flange
  • A350 LF2 class 1 forged slip on flange
  • ASTM A350 LF2 class 1 raised face slip on flange
  • SA 350 LF2 ring type joint slip on flange
Installations & applications German standards Thread types of companion/ screwed or SA 350 LF2 CL1 threaded flanges
  • Industrial piping connection (High/ Low pressure)
  • Power generation plant
  • Construction & mechanical systems
  • Industrial pressure vessels
  • Nuclear energy sector
  • Petrochemical plants

Above ASTM A350 LF2 Flanges suppliers have ex-stock and already supplied to many countries such as Saudi
Arabia, Oman, Middle east, Egypt, USA & South Africa

  • DIN 2622, 2641, 2655, 2656 lapped flange – Type 2 & Type 4
  • DIN 2578 & 2573 flat flange -Type 1
  • DIN 2627 to 2638 weld neck flange – Type 11
  • DIN 2558, 2565, 2566, 2567, 2568, 2569 threaded flange – Type 12
  • DIN 2527 blind flange – Type 5
  • MNPT thread (Male)
  • FPT thread
  • FNPT thread (Female) – ASME B1.20.1
  • BSPP thread (Female & male)
  • BSPT thread (Female)
  • NPT thread
  • MPT thread
  • BSP thread
Meet the requirements Value added services Manufacturing standards and origin country
  • NACE MR0175
  • ISO 15156
  • NACE TM-0284
  • Sour service
  • PWHT
  • HIC tested
  • NACE MR0103
  • IBR approved
  • NACE TM 0177
  • EIL approved
Above listed ASTM A350 LF2 flanges suppliers & manufacturers offer these services:

  • Fabricate (100% RadioGraphy)
  • Rolling
  • Tagging & marking
  • Sand Blasting
  • MTR’s Available
  • Threading
  • Pickled
  • De-burring
  • Electroplating
  • Polishing
  • Drilling
  • Minor Fabrication
  • Casting
  • Metal stampings
  • Cutting
  • Beveling end
  • Forging
  • CNC machined
  • Heat Treatment (Hardening & Tempering)
  • Fastest delivery in Saudi Arabia & Middle east
  • France – NF E 29-200/ NF E 29-203
  • USA – AWWA Flange
  • Malaysia – MS 816
  • Germany – DIN standard
  • USA – Flange API 605
  • Italy – UNI 2276/ 6091
  • Australia and UK – BS 10
  • USA – (ASA/ ANSI) ASME B16.5
  • Russia – Ghost
  • USA – MSS SP44
  • Europe – BS EN 1092-1 (only for steel)
  • Europe – BS EN 1092-2 (only for Iron)
  • Australia/ UK – BS 10
  • Australia – AS 2129
  • Italy – UNI 2276/ 6091
  • USA – CL 125 (Light weight)
  • Europe – PN 10 flange – PN400
  • China – GB/T 9112 / 9119
  • Europe – BS EN 1092-1
  • Russia – Ghost
  • Canada – CSA B16.5/ B16.47
  • Korean – KS
  • Malaysia – MS 253
  • Japan – JIS standard
  • USA – MSS SP44
  • Europe – ISO 7005
ASME specification Testing requirements Other special SA350 LF2 CL1 flanges
  • ASME B16.34 – A350 Gr LF2 large diameter flanges (26 to 60 NPS)
  • ASME B16.36 – ASTM A350 Gr LF2 orifice flanges
  • ASME B16.5 – SA350 LF2 CL 1 Forged Flanges, Normal pipe size 1/2 to 24″ NPS
  • ASME B16.20 – RTJ Gaskets for UNS K03011 Flanges
  • ASME B16.47 Series B (Formerly API 605 )- SA 350 LF2 large diameter steel flanges (26 to 60 NPS)
  • ASME B16.21 – Nonmetallic Flat Gaskets for ASTM A350 LF2 Flanges
  • Verify ASTM A350 LF2 flanges are manufactured as per the work order
  • Material inspection
  • Hardness test
  • Tensile test
  • Impact test
  • Visual inspection
  • A350 carbon steel dimensional check by ruler, calibrated caliper or tape
  • Dry film thickness check (for coating thickness by an elcometer)
  • Shell pressure test
  • Positive Material Identification Test (PMI) – Important test to check chemical composition
  • A350 Grade LF2 orifice plate
  • ASTM A350 Grade LF2 spade flange
  • SA350 LF2 swivel flange
  • A350 LF2 cl 1 anchor flange
  • SA 350 Gr LF2 expander flange
  • ASME SA350 LF2 reducing flange
  • LF2 class 1
    ring spacer flange
  • A350 Gr LF2 cl 1 high hub blind flange

Buy full range of A350 Gr LF2 cl1 flanges from stock in Saudi Arabia & UAE, for custom design or
fabrication work contact above listed top 10 ASTM A350 LF2 flanges maufacturers

American standards Quality assurance Marking
  • Mill certificate
  • Third Party Inspection
    EN 10204 3.1 Certificate
  • Free replacement
  • Standard name (EN 1092-1, ASME B16.5, JIS B2220, BS 4504, GOST 12820, SABS 1123)
  • Sizes
  • Pressure class
  • Heat number
  • Manufacturers logo / name (OEM)
  • Manufacturing date
  • Face type
  • Material Grade
  • Origin of material

ASTM A350 Gr LF2 Socket Weld Flange and SA350 LF2 Cl1 Reducing Flange with hydrotest, check A350 Flange price per kg in Dubai

SA 350 Gr LF2 temperature range

Temperature. °C Bar working pressures by Classes
75# 150# 300# 400#
−29~38 9.8 19.6 51.1 68.1
50 9.6 19.2 50.1 66.8
100 8.8 17.7 46.6 62.1
150 7.9 15.8 45.1 60.1
200 6.9 13.8 43.8 58.4
250 6.0 12.1 41.9 55.9
300 5.1 10.2 39.8 53.1
325 4.6 9.3 38.7 51.6
350 3.1 8.4 37.6 50.1
375 7.4 36.4 48.5
400 6.5 34.7 46.3
425 5.5 28.8 38.4
450 4.6 23.0 30.7
475 3.7 17.4 23.2
500 2.8 11.8 15.7
538 1.4 5.9 7.9

 

Temperature. °C Bar working pressures by Classes
600# 900# 1500# 2500#
-29~38 102.1 153.2 255.3 425.5
50 100.2 150.4 250.6 417.7
100 93.2 139.8 233.0 388.3
150 90.2 135.2 225.4 375.6
200 87.6 131.4 219.0 365.0
250 83.9 125.8 209.7 349.5
300 79.6 119.5 199.1 331.8
325 77.4 116.1 193.6 322.6
350 75.1 112.7 187.8 313.0
375 72.7 109.1 181.8 303.1
400 69.4 104.2 173.6 289.3
425 57.5 86.3 143.8 239.7
450 46.0 69.0 115.0 191.7
475 34.9 52.3 87.2 145.3
500 23.5 35.3 58.8 97.9
538 11.8 17.7 29.5 49.2

ASTM A350 lf2 cl1 forged flange pressure rating

 

Temperature. °F Psi working pressures by Classes
75# 150# 300# 400#
-20~100 140 285 740 985
200 130 260 680 905
300 115 230 655 870
400 100 200 635 845
500 85 170 605 805
600 70 140 570 755
650 60 125 550 730
700 110 530 710
750 95 505 675
800 80 410 550
850 65 320 425
900 50 230 305
950 35 135 185
1000 20 85 115

 

Temperature. °F Psi working pressures by Classes
600# 900# 1500# 2500#
-20~100 1480 2220 3705 6170
200 1360 2035 3395 5655
300 1310 1965 3270 5450
400 1265 1900 3170 5280
500 1205 1810 3015 5025
600 1135 1705 2840 4730
650 1100 1650 2745 4575
700 1060 1590 2655 4425
750 1015 1520 2535 4230
800 825 1235 2055 3430
850 640 955 1595 2655
900 460 690 1150 1915
950 275 410 685 1145
1000 170 255 430 715

A350 LF2 equivalent material

Material Group Application Common Name DIN UNS Forging Spec. Casting Spec. Equivalent DIN W. No Material Type
Low Temp Carbon Steel Flange General non-corrosive service from
-46ºC (-50ºF) to 340ºC (650ºF), LF2 -46ºC ~ 425ºC
LTCS TSTE 355 DIN 18103 K03011 A350-LF2 A352-LCB A352-LCC 1.0566 C-Mn-Fe

SA 350 lf2 cl1 weld neck flange equivalent grades

ASTM A350 Gr.LF2 chemical composition

Element Weight %
Cu ≤ 0.40
P ≤ 0.035
S ≤ 0.040
Nb ≤ 0.02
V ≤ 0.08
Cr ≤ 0.30
Mo ≤ 0.12
C ≤ 0.30
Mn 0.60~1.35
Si 0.15~0.30
Ni ≤ 0.40
N

A350 LF2 Chemical Composition

Mechanical properties of A350 LF2 steel flanges

Item Value
ELr,
min. %
22
ELs,
min. %
30
Yield strength,
ksi [MPa], min.
36 [250]
Reduction of
Area, min. %
30
Hardness,
max. HBW
197
ELc,
min. %
48t + 15
Tensile Strength,
ksi [MPa]
70-95
[485–655]

A350 lf2 flange mechanical properties

comparison A350 LF2 Flanges Price between India and China

Description Price In India (INR) Per KG Price In China (Renminbi) KG Price In US (Dollar) KG
SIZE: 1/2 INCH, 150#, SOCKET WELD ₹3453.54 ¥302.27 US $42.50
SIZE: 3 INCH, 300#, SCH160, WELD NECK ₹4986.55 ¥436.44 US $61.37
SIZE: 2 INCH, 150#, RF, SCH 40, BLIND ₹2134.09 ¥186.78 US $26.26
SIZE: 4 INCH, 900#, SCH STD, WELD NECK ₹20205.08 ¥1768.44 US $248.66
SIZE: 3/4 INCH, 300#, SCH 160, SOCKET WELD ₹3113.76 ¥272.53 US $38.32

Available Types Of Low Temperature Carbon Steel Flanges

ASME SA350 LF2 CL1 Threaded Flange

ASME SA350 LF2 CL1 Threaded Flange

A350 LF2 CS Orifice Flange

A350 LF2 CS Orifice Flange

Grade Lf2 CL 1 Spectacle Blind Flange

Grade Lf2 CL 1 Spectacle Blind Flange

Low Temperature Carbon Weld Neck Flange

Low Temperature Carbon Weld Neck Flange

LTCS Slip On Flange

LTCS Slip On Flange

ASTM A350 LF2 Blind Flange

ASTM A350 LF2 Blind Flange

A350 LF2 Class 1 RTJ Flanges

A350 LF2 Class 1 RTJ Flanges

SA350 LF2 CL 1 Raised Face Flanges

SA350 LF2 CL 1 Raised Face Flanges

Lf2 Class 1 Reducing Flanges

Lf2 Class 1 Reducing Flanges

A350 LF2 LTCS Socket Weld Flange

A350 LF2 LTCS Socket Weld Flange

A350 LF2 Carbon Steel Lap Joint Flange

A350 LF2 Carbon Steel Lap Joint Flange

LTCS Plate Flange

LTCS Plate Flange

ASTM A350 Gr Lf2 Class 1 Square Flanges

ASTM A350 Gr Lf2 Class 1 Square Flanges

A350 Grade LF2 Flat Flanges

A350 Grade LF2 Flat Flanges

SA350 LF2 Anchor Flanges

SA350 LF2 Anchor Flanges

ASTM A350 LF2 Class 1 Forged Flange

ASTM A350 LF2 Class 1 Forged Flange

LF2 Steel WNRF Flange

LF2 Steel WNRF Flange

ASTM A350 LF2 Cl1 Screwed Flange

ASTM A350 LF2 Cl1 Screwed Flange

A350 LF2 Class 1 SORF Flange

A350 LF2 Class 1 SORF Flange

A350 Gr LF2 BLRF Flange

A350 Gr LF2 BLRF Flange

ASME SA 350 LF2 Class 1 Industrial Flange

ASME SA 350 LF2 Class 1 Industrial Flange

Coating Types Of ASTM A350 LF2 Carbon Steel Flanges

Types of coatings to protect ASTM A350 LF2 Low Temperature Carbon Steel Flanges from rusting or corrosion

  • Oil Varnished
  • Electric zinc coated
  • Alloy material coated
  • White or yellow zinc coated
  • FBE Coating
  • Epoxy Coated
  • Elastomeric coatings

 

Buying Advantages Of Low Temp Carbon Steel Flanges

Buying Advantages Of Low Temp Carbon Steel Flanges
  • Environment friendly
  • Budget friendly
  • Good ductility
  • Safe to process
  • Good ductility
  • Light Weight
  • Good Mechanical Properties

 

Common LTCS Flanges Face Types

  • Flat Face (FF)
  • Raised Face (RF)
  • Ring Joint Face (RTJ)
  • Tongue and Groove (T&G)
  • Male & Female (M&F)

Referred ASTM A350 LF2 Flanges Standards

Referred ASTM A350 LF2 Flanges Standards

ASME SA350 LF2 CL1 Pipe Flanges Forging Process and Heat Treatment


ASME SA350 LF2 CL1 Pipe Flanges Forging Process and Heat Treatment

Application For A350 LF2 Pipe Flange

  • Food Processing
  • Pharmaceuticals Industry
  • Pharmaceuticals Application
  • Energy Industry
  • Power Plant
  • Gas Processing
  • Petrochemical Industry
  • Chemical Industry
  • Oil and Gas Industry
Application For A350 LF2 Pipe Flange

Piping Material introduces trusted names of distributors and wholesalers of ASTM A350 LF2 Lap Joint Flange and SA 350 Gr LF2 Slip On Flange in Middle East, check MTC & Test reports

The ASTM A350 LF2 class 1 and 2 are the versatile classes of this grade that can be differentiated on some basic features. The A350 LF2 Cl1 material is designed with a tensile strength between 415 to 585mpa. This material has a minimum yield strength of 205mpa. An A350 Gr LF2 Material has a tensile strength between 485 to 655mpa and shows a minimum yield strength of 250mpa.

The ASTM A350 LF2 class 1 flange has a minimum applicable pressure of -18 degrees C. Similarly, a class 2 flange has a minimum applicable pressure of -46 degrees C. The minimum applicable pressure of the ASTM A350 Gr LF2 socket weld flange is also its Charpy impact test temperature.

A LTCS Flange is a low temperature carbon steel material. The flanges are designed to work primarily in low temperature conditions. The SA 350 LF2 blind flange has a fine grain structure and a uniform carbide dispersion.

LTCS Flange and A350 LF2 Cl1 Material as per ASME B16.5, DIN, AWWA, ANSI B16.47, ISO et

ASME and DIN are two different institutes or organizations who set standards for the A350 flange . The American Society of Mechanical Engineers (ASME) promotes multidisciplinary engineering and sciences around the world. A DIN A350 LF2 spectacle blind flange is a German Institute for standardization. These flanges are part of the ISO member body and have around thirty thousand standards covering every technological field.

Check ASTM A350 LF2 Class 1 Flange, SA 350 LF2 Cl1 Weld Neck Flange and A350 Gr LF2 Material specification, chemical composition and equivalent

A weld neck and slip on the flange are among the two common types of flanges used in the industry. SA 350 LF2 Cl1 weld neck flange has a long protruding hub or face. These WN flanges can handle higher pressure and temperature media in the system. SA 350 Gr LF2 slip on flanges are most popular among petrochemical projects. These SORF flanges are welded using one or more fillet welds.