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Carbon Steel Flanges

Specialized Carbon Flanges Manufacturer, Low Temperature Carbon Steel ANSI Flange.

Marcel Piping Projects Supply PVT LTD is leading Manufacturers, Suppliers, and Exporters of Carbon Steel Flanges. As compared to stainless steel grade, the carbon steel flanges have a high carbon steel content. This high content of the carbon is what give the carbon steel plate flanges a less melting point. An raised carbon steel content in Carbon Steel Slip on Flanges make them more malleable. Further, these flanges have good continuity and they offer better heat distribution properties. Generally, Carbon Steel Blind Flange are primarily an iron carbon steel alloy. The carbon steel socket weld flange contains up to 2.06 of carbon with an addition of over to 1.65 of manganese. Apart from the small quantum of manganese, the carbon steel slip on flanges contains trace quantities of other essentials like as 0.5 of silicon and sulfur and phosphorus as contamination.

We are leading Stockists and Suppliers of Low Temperature Carbon Steel Flanges in USA, UK, Qatar, Mexico, Nigeria, Saudi Arabia, Kuwait, Iran, Kazakhstan, Bahrain, Vietnam, Indonesia, Norway, Ghana, Colombia, Azerbaijan, Libya.

Carbon Flange Manufacturer
Carbon Flange Manufacturer in Mumbai, India
Carbon Steel Flanges Supplier in Mumbai, India

We are ISO Certified Manufacturer and Stockist of Carbon Blind Flange, Carbon Steel Flange Class 150, Carbon Steel Companion Flange, Carbon Steel PN16 Flange, Carbon Steel Puddle Flange, Carbon Steel Flange Pn16, Carbon Steel Threaded Flange, Carbon Steel Flange Temperature Rating, Carbon Steel Backup Flange, Carbon Steel Vanstone Flange, Carbon Steel 300# Flange, 150# Carbon Steel Flange at Reasonable Price.

We are Leading Exporter and Supplier of LTCS Flange, Carbon Steel Stub End Flange, Carbon Steel Flange Flat Face, Carbon Steel Forged Flange, Carbon Steel Lap Joint Flange, Carbon Steel Puddle Flange, Carbon Steel Weld Neck Flange, Flange Carbon Steel Slip-on Din 2576, Carbon Steel Reducing Flange, Class 300#, 600#, 900#, 1500#, 2500# Carbon Steel Flanges Dimensions.

Carbon Steel Flange Standard Specifications
CS Flange Specification Chart

Product Name Carbon Steel Flanges
Size Range 1/2″ (15 NB) to 48″ (1200NB)
Class / Pressure Rating 150#, 300#, 600#, 900#, 1500#, 2500#, PN6, PN10, PN16, PN25, PN40, PN64 etc.
Standards / Dimensions ANSI/ASME B16.5, B16.47 Series A & B, B16.48, BS4504, BS 10, EN-1092, DIN, BS, GOST, MSS SP-44, ISO70051, JISB2220, BS1560-3.1, API7S-15, API7S-43, API605
Flange Face Types / Connection Type Flat Face Flange (FF), Raised Face Flange (RF), Ring Joint Flange (RTJ), Lap Joint Flange, Male and Female Flange (M&F), Large and Small Tongue-and-Groove Flange (T&G)
Dimensions ANSI B16.5, ANSI B16.47 Series A & B, ASA, API-605, MSS SP44, AWWA, Custom Drawings
Custom Design As per your drawing | AS, BS, ANSI, DIN, JIS | Equal and Reducing Configurations
Material Test Certificates (MTC) As per EN 10204 3.2 and EN 10204 3.1, Test Certificates certifying NACE MR0175, NACE MR0103
Test Certificates 100% Radiography Test Report, EN 10204/3.1B, Raw Materials Certificate, Third Party Inspection Report, etc
Tests Hydrostatic testing machine, Direct-reading Spectrograph, UI trasonic flaw detector, X-ray detector, Magnetic particle detector
Equipment / Machines Press machine, Pushing Machine, Bending machine, Sand-blasting machine, electric bevelling machine, etc.
Coating Anti-rust Paint, Oil Black Paint, Yellow Transparent, Zinc Plated, Cold and Hot Dip Galvanized
Origin Indian / USA / Japan / West Europe / Korean
Applications/Usage Offshore, Oil Field, Shipbuilding, Water System, Natural Gas, Pipe Projects, Electric Power, etc.
Top Export Network USA, UK, Qatar, Mexico, Nigeria, Saudi Arabia, Kuwait, Iran, Kazakhstan, Bahrain, Vietnam, Indonesia, Norway, Ghana, Colombia, Azerbaijan, Libya.

Carbon Steel Flanges Available Grades
CS Flange Grades

ASTM A105 Flange ASTM A350 Flange ASTM A694 Flange
SS400 Flange SF440 Flange ST37-2 Flange
S235JrG2 Flange P250GH Flange C22.8 Flange

Carbon Steel Flange Standards
CS Flange Standard Dimensions

ANSI/ASME B16.47 Flanges ANSI/ASME B16.36 Flanges ANSI/ASME B16.5 Flanges Pr. EN1902-1 Flanges
DIN Flanges JIS Flanges BS 4504 Flanges BS 10 Flanges
MSS SP-44 Flanges JIS B2220 Flanges KS B1503 Flanges UNI Flanges
SABS/SANS 1123 Flanges AS 2129, AS 4087 Flanges ISO 9624, ISO 7005-1 Flanges AWWA Flanges Standard
GOST Standard Flanges API Flanges AS/ANZ 4331.1 Flanges Series A Flange
Series B Flange SAE J518 Flanges GB Flange Norwegian Standard Flanges

Carbon Steel Flanges Chemical Composition
CS Flanges Chemical Composition

Grades C Mn P S Si Cu Ni Cr Mo V
A105 – 0.60 – – 0.10 – – –
0.35 1.05 0.035 0.040 0.35 0.40 0.40 0.30 0.12 0.08
Grades C% Mn% Si% S% P% Cr% Ni%
A350 LF1 0.30 max 0.6/1.35 .15/.30 .040 max .035 max 0.30 max 0.40 max
A350 LF2 0.30 max 0.6/1.35 .15/.30 .040 max .035 max 0.30 max 0.40 max
A350 LF3 0.20 max 0.9 .20/.35 .040 max .035 max 0.30 max 3.3/3.7
ASTM A694 F42 0.26-0.265 1.60-1.64 0.025-0.030 0.025-0.030 0.15-0.35
ASTM A694 F52 0.26-0.265 1.60-1.64 0.025-0.030 0.025-0.030 0.15-0.35
ASTM A694 F60 0.26-0.265 1.60-1.64 0.025-0.030 0.025-0.030 0.15-0.35
ASTM A694 F65 0.26-0.265 1.60-1.64 0.025-0.030 0.025-0.030 0.15-0.35

Carbon Steel Flanges Mechanical Properties
CS Flanges Mechanical Properties

Property ASTM A105 ASTM A350-LF2
Tensile Strength Min, psi 70,000 70,000-95,000
Tensile Strength Min, N/mm² 485 485-655
Yield Strength Min, psi 36,000 36,000
Yield Strength Min, N/mm² 250 250
Elongation (%) 22 22
Reduction of Area (%) 30 30
Hardness, maximum 187 15/12 ft-lbs
CVN at -50℉ 20/16 joules
ASTM A694 Flange Material Grade Min Yield Strength (0.2 % Offset), in ksi [MPa] MinTensile Strength Elongation in 2 in. or 50 mm, min %
in ksi [MPa]
A694 F42 42 [290] 60 [415] 20
A694 F46 46 [315] 60 [415] 20
A694 F48 48 [330] 62 [425] 20
A694 F50 50 [345] 64 [440] 20
A694 F52 52 [360] 66 [455] 20
A694 F56 56 [385] 68 [470] 20
A694 F60 60 [415] 75 [515] 20
A694 F65 65 [450] 77 [530] 20
A694 F70 70 [485] 82 [565] 18

Carbon Steel Flange Weight Chart
Weight Chart of Flanges to ASME B 16.5

ANSI B16.5 – ½” – 24” Forged Flanges Weight Chart:

CLASS Nominal Pipe Size Slip On Threaded Socket Weld Lap Joint Blind Weld Neck
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
8 115 115 115 112 140 120
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

Carbon Steel Flange Pressure Rating
CS Pressure-Temperature Ratings

Temp. °C Working Pressures by Classes, bar
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
Temp. °C Working Pressures by Classes, bar
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
Temp. °F Working Pressures by Classes, psi
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
Temp. °F Working Pressures by Classes, psi
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

In Stock Carbon Steel Flanges Types
CS Flanges Price in India

WNRF / WNFF
Carbon Steel Weld Neck Flange
Carbon WN Flange

RFLWN
Carbon Steel Long Weld Neck Flange
Carbon LWN Flange

SOFF / SORF
Carbon Steel Slip On Flange
Carbon SO Flange

Figure 8 Flange
Carbon Steel Spectacle Blind Flanges
Carbon Figure 8 Flange

SWRF
Carbon Steel Socket Weld Flanges
Carbon SW Flange

BLRF
Carbon Steel Blind Flange
Carbon BL Flange

THRF
Carbon Steel Threaded Flanges
Carbon Threaded Flange

Raised Face
Carbon Steel Orifice Flanges
Carbon Orifice Flange

Loose Flange
Carbon Steel Lap Joint Flanges
Carbon Loose Flange

Square Flange
Carbon Steel Square Flanges
Carbon Square Flange

RTJ Flange
Carbon Steel Ring Type Joint Flanges
Carbon RTJ Flange

T&G Flange
Carbon Steel Tongue and Groove Flange
Carbon T&G Flange

Expanding flange
Carbon Steel Expander Flanges
Carbon Expander Flange

Reducer Flange
Carbon Steel Reducing Flanges
Carbon Reducer Flange

Male-Female Flange
Carbon Steel Male & Female Flanges
Carbon Male-Female Flange

Weldoflange
Carbon Steel Weldolet Flange
Carbon Weldoflange

Nipoflange
Carbon Steel Nipolet Flange
Carbon Nipoflange

Backup Flange
Carbon Steel Backing Ring Flanges
Carbon Backup Flange

Spacer Flange
Carbon Steel Ring Spacer Flanges
Carbon Spacer Flange

Spade Flange
Carbon Steel Paddle Blind Flanges
Carbon Spade Flange

PL Flange
Carbon Steel Plate Flange
Carbon Plate Flange

High Hub Flange
Carbon Steel High Hub Blind Flange
Carbon Hub Flange

Flange Drawing
Carbon Steel Custom Flanges
Carbon Custom Flange

Swivel Flange
Carbon Steel Swivel Ring Flange
Carbon Swivel Flange

Note: Flanges Prices are depended on Material Grades, Standards, Dimensions, Sizes, Order Quantity, etc. Prices Mentioned on website are for referance purpose only. To get market leading prices for Carbon Steel Flanges contact us now.

How To Order Carbon Steel Flanges?
Parameters to request estimates

  • Flange type (welding neck, slip-on, threaded, lap joint flange, etc)
  • Carbon Steel Flange specification (example ASME B16.5, ASME B16.47 type A, EN 1092-1, JIS, UNI, DIN, etc.)
  • Nominal pipe size (NPS)
  • CS Flange rating (or class): flanges’ rating can range from 150 to 2500 for ASME flanges, from 5k to 30k for JIS B2220 flanges and KS1503 flanges; from PN 6 to PN 100 for European and Russian-standard flanges (DIN, UNI, EN 1092-1, GOST 12820 / 12821-80); Class 600/3, 1000/3, 1600/3, 2500/3, 4000/3 for SANS/SABS flanges (South African standard for flanges)
  • Pipe schedule (for welding neck and socket weld flanges)
  • Carbon Steel Flange facing type (FF; RF, RTJ): according to ASME B16.5, the raised face is the standard facing for flanges (different facings, like RTJ or flat face FF, have to be ordered specifically)
  • CS Flange surface finish (smooth, stock, concentric serrated, etc)
  • Carbon Steel Flange Quantity

Carbon Steel Flanges Industries and Applications
CS Flange Applications

  • Pumps, Valves, and vessels in manufacturing and food processing.
  • Pipe connections in industrial waterworks.
  • Heat exchangers and heating systems of all sizes.
  • Mining support.
  • Nuclear power systems.
  • Plumbing and mechanical systems.
  • Assemblies in the oil, gas, and petrochemical industries.
  • Fire protection systems.

Carbon Steel Flange Supply and Export Network
List of Cities and Countries







Afghanistan Algeria Angola Argentina
Australia Austria Azerbaijan Bahrain
Bangladesh Belarus Belgium Bhutan
Bolivia Brazil Bulgaria Canada
Chile China Colombia Costa Rica
Croatia Czech Republic Aberdeen Abu Dhabi
Ahmedabad Ahvaz Al Jubail Al Khobar
Algiers Ankara Atyrau Bangkok
Bengaluru Bhopal Bogota Brisbane
Busan Cairo Calgary Caracas
Chandigarh Chennai Chiyoda Coimbatore
Colombo Courbevoie
Denmark Ecuador Egypt Estonia
Finland France Gabon Ghana
Greece Hong Kong Hungary India
Indonesia Iran Iraq Israel
Italy Japan Jordan Dallas
Dammam Doha Dubai Edmonton
Ernakulam Faridabad Geoje-si Gimhae-si
Granada Gurgaon Hanoi Haryana
Ho Chi Minh City Hong Kong Houston Howrah
Hyderabad Indore Istanbul Jakarta
Jeddah
Kazakhstan Kenya Kuwait Lebanon
Libya Lithuania Malaysia Mexico
Mongolia Morocco Netherlands New Zealand
Nigeria Norway Oman Pakistan
Peru Philippines Poland Portugal
Qatar Romania Russia Karachi
Kolkata Kuala Lumpur Kuwait City La Victoria
Lagos Lahore London Los Angeles
Ludhiana Madrid Manama Melbourne
Mexico City Milan Montreal Moscow
Mumbai Muscat Navi Mumbai New Delhi
New York Noida Perth Petaling Jaya
Pimpri-Chinchwad Port-of-Spain Pune Rajkot
Rio de Janeiro Riyadh
Saudi Arabia Serbia Singapore Slovakia
South Africa South Korea Spain Sri Lanka
Sweden Switzerland Taiwan Thailand
Trinidad & Tobago Tunisia Turkey Ukraine
United Arab Emirates (UAE) United Kingdom (UK) United States (US) Venezuela
Vietnam Yemen Santiago Secunderabad
Seoul Sharjah Singapore Surat
Sydney Tehran Thane Thiruvananthapuram
Toronto Ulsan Vadodara Visakhapatnam
Vung Tau
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