Carbon Steel Flanges Manufacturers in India

Guide for Carbon Steel Flanges

Used For :

  • Oil and Gas Pipelines

Supplied With :

  • Black Oxide Coatings

Environments :

  • Chemical

Corrosion Resistance :

  • Extreme Environments

Grades :

  • ASTM A105 and ASTM A350 LF2

Also known :

  • High, Medium and Low Carbon

Manufacturing Facility :

  • ISO 9001:2008

Standard :

  • ASME B16.5

Production Capacity :

  • 100 Tons Per Month

Carbon steel flanges is a grade that is embedded with higher carbon content and other constituting alloys. Carbon steel pipe flanges are a versatile pipe grade that is designed in the shape of a lip or ridge that helps in providing strength and stability to different piping equipment. The CS flanges are utilized in connecting piping grades of different specifications. These flange can be threaded and welded with gaskets used to bolt them.

Carbon steel forged flanges are produced as metal is processed at extreme pressures giving them enhanced tensile and fatigue strength. These flange have an even surface finish with good surface porosity. Our company is a carbon steel flanges manufacturers in India that follows vigorous testing procedures to produce the best products in the industry.

The Low temperature carbon steel flanges are designed to work in cryogenic temperatures without cracking under extreme cold. These flange may be formed in raised, flat, and rtj specifications. A carbon steel raised face flange has a raised surface that is above its bolting area enabling it to securely seal the component. These CS flange can be sealed with soft, semi-metallic, and flat gaskets.

The Carbon steel RTJ flange is a versatile flange that has deep groove cut on the metallic ring. The grooves are compressed with connecting bolts when they are tightened. Large diameter carbon steel flanges cover a larger surface area and are robust in their functioning. These CS pipe flange are very reliable and are durable for long periods. We are the carbon steel flanges manufacturer in India who can customize all our products and deliver them to your doorstep quickly due to our connections with different logistical and supply chains.


How to Choose Right CS Flanges for High Temperature Service in Malaysia?

  • Select The Right Carbon Steel Grade

  • Availability Of Size

  • Check Pressure Rating and Face

  • Types Of CS Flanges And Wall Thickness

  • Choose Right Coating Types (Environmental Conditions)

  • Consider Corrosion Resistance

  • Choose Requirement Of Working Temperature

  • Select Right Standards and Test Certifications

Why Indian Suppliers of Carbon Steel Flanges Has High Demand in UAE?

Why Indian Suppliers of Carbon Steel Flanges Has High Demand in UAE?

Marking Information for Carbon Steel Forged Flanges

Marking Information for Carbon Steel Forged Flanges

What Are the Packaging Requirements for Exporting CS Pipe Flanges in USA?

  • Products Labeling and Marking

  • Shipping Information (U.S. Import Regulations)

  • Anti Corrosion Coatings

  • Wooden Boxes Packaging

  • Carton Box Packaging

  • Waterproof Sealing

  • Commercial Invoice

  • Material Test Certificates

Learn More About CS Forged Flange Specification As Per ASME B16.5

Carbon Steel Flange Specifications

Most Selling Size :

Most Selling Size :

  • NPS: ½" to 24"
  • PN2.5 To PN400
  • DN15 To DN1500
  • Contact Carbon Steel Flanges manufacturers in India for above 48 Inch
Types Of Pressure Class :

Types Of Pressure Class :

  • CL 150 & 300
  • CL 600 & 900
  • CL 1500 & 2500
Manufacturing Standard :

Manufacturing Standard :

Maximum Size :

Maximum Size :

  • 26" To 60"
Manufacturing Way :

Manufacturing Way :

  • Plate
  • Forged
  • Cast
Number Of Bolts Hole :

Number Of Bolts Hole :

  • 4 To 48
Surface Finish :

Surface Finish :

  • Mirror Finish
  • Stock & Smooth
  • Cold Water Finish
  • Spiral Serrated
  • Concentric Serrated
Top 5 Faces Types :

Flange Faces Types :

  • Male & Female Face
  • Tongue & Groove Face
  • RTJ Face
  • RF Face
  • FF Face
Types Of Threads :

Types Of Threads :

  • MPT & MNPT Threads
  • BSP Threads
  • FPT Threads
  • NPT Threads
  • BSPT Threads
Wall Thickness :

Wall Thickness :

  • SCH 10/ 20/ 40
  • SCH 60/ 80/ 100
  • SCH 120/ 140/ 180
Uses :

Uses :

  • Power Generation
  • Nuclear Energy
  • Oil & gas plants
  • Petrochemicals
Testing Methods :

Testing Methods :

  • Tensile test
  • Material inspection
  • Impact test
  • PMI test
  • Hardness test
Melting Point

Melting Point

  • 1425 To 1540°C
End Connection :

End Connection :

  • Threaded
  • Welding
Marking Info :

Marking Info :

  • Size & Schedule
  • Standard & Heat No.
  • Manufacturers Name
  • Grade & Material
Life :

Life :

  • Carbon Steel = 20 To 30 Years
Germany Standards (DIN) :

Germany Standards (DIN) :

Japanese Standard (JIS) :

Japanese Standard (JIS) :

AWWA Standard :

AWWA Standard :

BS Standard :

BS Standard :

Value Added Services :

Value Added Services :

  • Beveling end
  • Threading
  • Minor Fabrication
  • Casting
  • Polishing
Logistics :

Logistics :

  • By Sea
  • By Air
  • Qatar = 7 day
  • Saudi Arabia = 7 day
  • Singapore = 8 days
  • Malaysia = 10 days
  • Oman = 5 days
  • UAE = 5 day
  • South Africa = 25 To 30 day
Available Packaging :

Available Packaging :

  • Wooden Cases
  • Wooden Pallet
  • Carton Box
Documentation :

Documentation :

  • Raw material test reports
  • Material traceability records
  • Fumigation certificates
Types Of Applicable Fluids :

Types Of Applicable Fluids :

  • Water & Air
  • Oil and Gas
  • Steam
Types Of Coating :

Types Of Coating :

  • Anti rust
  • Zinc coatings
  • PE/ PTFE/ FBE coating
  • Back painting

Compare Prices with Different Carbon Steel Flanges Manufacturers in India, Save Costs By Buying From CS Flange Supplier in Mumbai.


Compare The Size Range and Price List Of Different CS Flange Supplier and Stockist in Mumbai.

Carbon Steel Blind Flange Price List

Size Approx. Weight in KG/Unit Price in US (Dollar) Price in UAE (Dirham) Price In Singapore Dollar (Singapore)
DN15 0.49 US $1.97 AED 7.24 SGD 2.61
DN20 0.66 US $2.78 AED 10.21 SGD 3.68
DN25 0.99 US $3.68 AED 13.52 SGD 4.88
DN32 1.29 US $3.95 AED 14.51 SGD 5.23
DN40 1.70 US $4.53 AED 16.64 SGD 6.00
DN50 2.77 US $6.23 AED 22.88 SGD 8.25
DN65 4.22 US $8.13 AED 29.86 SGD 10.77
DN80 5.23 US $11.19 AED 41.10 SGD 14.83
DN100 7.78 US $14.11 AED 51.83 SGD 18.70
DN125 9.20 US $17.97 AED 66.00 SGD 23.81
DN150 11.88 US $24.34 AED 89.40 SGD 32.25
DN200 20.92 US $36.10 AED 132.60 SGD 47.83
DN250 30.86 US $55.12 AED 202.46 SGD 73.03
DN300 45.89 US $77.45 AED 284.47 SGD 102.62
DN350 62.39 US $98.15 AED 360.50 SGD 130.05
DN400 80.97 US $125.89 AED 462.39 SGD 166.80
DN450 99.54 US $178.34 AED 655.04 SGD 236.30
DN500 129.55 US $215.97 AED 793.26 SGD 286.16
DN600 197.65 US $329.17 AED 1209.04 SGD 436.15

Get The Mill Test Report When Purchasing Carbon Steel Forged Flanges From A Distributor in India (Pune, Kolkata, Delhi, Rajkot, Gujarat, Ahmedabad, Vadodara, Jalandhar, Chennai, Bangalore.)


Carbon Steel Weld Neck Flange Price List

Size Approx. Weight in KG/Unit Price in US (Dollar) Per Unit Price In Saudi Riyal (Saudi Arabia) Price In South African Rand (South Africa)
DN15 0.54 US $3.52 SAR 13.21 ZAR 65.95
DN20 0.78 US $4.95 SAR 18.58 ZAR 92.75
DN25 1.12 US $5.18 SAR 19.44 ZAR 97.05
DN32 1.47 US $8.17 SAR 30.67 ZAR 153.08
DN40 1.90 US $9.64 SAR 36.19 ZAR 180.62
DN50 2.77 US $10.15 SAR 38.10 ZAR 190.17
DN65 4.49 US $14.24 SAR 53.45 ZAR 266.81
DN80 5.44 US $15.99 SAR 60.02 ZAR 299.60
DN100 7.69 US $21.46 SAR 80.55 ZAR 402.08
DN125 9.40 US $28.56 SAR 107.21 ZAR 535.11
DN150 11.82 US $30.56 SAR 114.71 ZAR 572.59
DN200 19.11 US $53.13 SAR 199.43 ZAR 995.47
DN250 26.19 US $69.54 SAR 261.03 ZAR 1302.93
DN300 40.93 US $115.67 SAR 434.19 ZAR 2167.25
DN350 54.30 US $187.67 SAR 704.46 ZAR 3516.27
DN400 67.63 US $248.67 SAR 933.43 ZAR 4659.19
DN450 78.58 US $287.67 SAR 1079.82 ZAR 5389.91
DN500 93.83 US $375.34 SAR 1408.91 ZAR 7032.54
DN600 125.64 US $513.14 SAR 1926.17 ZAR 9614.42

Contact Carbon Steel Flanges Manufacturers in India For High Quality Material With MTC. Trustworthy Stockists & Supplier in Mumbai.


Carbon Steel Flange Material Grade

List of Important Documents for UAE Buyers to Purchase Carbon Steel Flanges from India

List of Important Documents for UAE Buyers to Purchase Carbon Steel Flanges from India

Why Choose Carbon Steel Blind Flange?

Easy Installation :

  • No Special Tools

Available Ratings :

  • Class 150 to 2500

Wide Sizes :

  • 1/2" to 24"

Long Life :

  • 8 to 10 Years Material Life

Coating :

  • PE and FBE coating

Uses for :

  • Oil & Gas

What is the Testing Procedure for CS Slip On Flange?

What is the Testing Procedure for CS Slip On Flange?

Carbon Content of CS Flange

  • Low Carbon Steel : 0.005% to 0.3%.

  • Medium Carbon Steel : 0.3 to 0.8%

  • High Carbon Steel : 0.8-2.0%

  • Ultra High Carbon Steel : 1.25% to 2.0%


Check Coating Types Of Carbon Steel Weld Flanges, Heat Resistant Property, and Standard With Pressure As Per PN2.5 To PN40


Coating Types Of Carbon Steel Weld Flanges

Coating Types Temperature Color
FBE coating 225° to 245°C Blue and Red
PTFE coating +260°C Grey and Black
Zinc coating 420°C to 650°C Dull Gray
PE coating Up to 80 °C Milky-white or Black
Anti rust coating 10°C – 30°C Red oxide & Mid grey

Heat Resistant Property of CS Pipe Flange

  • High impact resistance

  • Storage Time is relatively long (more than 50 years)

  • Have good corrosion resistance

  • Room temperature is 46.5 W/mK

Carbon Steel Flange Standard With Pressure

Type ANSI B16.5 ANSI B16.47 Series A ASME B16.47 Series B EN 1092 and BS4504
- LBS LBS LBS Bar
Weld Neck Flange Class 150 To 2500 CL 150 To 900 Class 150 To 300 PN2.5 To PN40
Weld Neck Ring Type Joint Class 300 To 2500 CL 300 To 900 Class 150 To 300 N/A
Slip On Flange Class 150 To 1500 - - PN2.5 To PN40
Slip On Ring Type Joint Class 300 To 1500 - - N/A
Threaded Flange Class 150 To 2500 - - PN6 To PN40
Lap Joint Flange Class 150 To 2500 - - PN6 To PN40
Blind Flange Class 150 To 2500 - - PN2.5 To PN40
Socket Weld Flange Class 150 To 1500 - - N/A

DIN Standard of Carbon Steel Forged Flanges

Standard Types Size Pressure
DIN 2501 Plate Flange DN15 To DN700 PN10
DIN 2561 Oval Threaded Flange DN10 – DN2000 PN10 & PN16
DIN 2527 Blind Flange DN10 To DN1000 PN6/PN10/PN16/PN25/ PN40/ PN64/ PN100
DIN 2633 Welding Neck Flanges DN10 To DN600 PN16
DIN 2632 Welding Neck Flanges DN10 To DN600 PN10
DIN 2576 Plate and Slip On Flange DN10 To DN600 PN10/ PN16/ PN40
DIN 2642 Loose (Lapped Joint) Flange DN10 To DN800 PN10
DIN 2634 Welding Neck Flanges DN15 To DN1000 PN25
DIN 2635 Welding Neck Flanges DN15 To DN500 PN40

Buy Carbon Steel Pipe Flanges From Trusted manufacturer with Leak-Proof Test Reports, View Sealing Surface in Top 4 Common Configurations

Carbon Steel Pipe Flanges Faces

Four most common configurations

  • For ASME and EN 1092 To Raised Face (RF)

  • BS 10 To Flat Face (FF)

Type Description
RF (Raised Face) To facilitate welding
FF (Flat Face) -
RJT (Ring Type Joint) For leak-proof connection at high pressures
Tongue and Groove (Small or Large) -

CS Flange Types And Methods Of Manufacture

EN BS Flange & Collar Type Forging Cast Plates Machined Bent and Electric Welded
EN 1092 Type 01 101 Plate Flange (welding) Yes No Yes Yes Yes
EN 1092 Type 05 105 Blind Flange Yes No Yes Yes NO
EN 1092 Type 11 111 Weld Neck Flange Yes No No Yes Yes, for
≥ DN 700
EN 1092 Type 12 112 Hubbed Slip On Flange (Welding) Yes No No Yes No

Low Carbon Steel Flange in CNC Machining and Forging Services, Check RF CS Flange Weight & Sizes Chart

CS Flange Weight Chart

  • Weld Neck Flange

  • Class 150 To 2500

  • RF Face Type

  • ASME B16.5

NPS Class 150 Class 300 Class 400 Class 600 Class 900 Class 1500 Class 2500
1/2 0.9 0.9 1.4 1.4 3.2 3.2 3.6
3/4 0.9 1.4 1.6 1.8 3.2 3.2 4.1
1 1.4 1.8 1.8 1.8 3.8 4.1 5.9
1.4 2.3 2 2.7 4.5 4.5 9
1.8 3.2 3.6 3.6 6.3 6.3 12.6
2 2.7 4.1 4.5 5.4 10.8 11.3 18.9
4.5 5.4 6.3 8.1 13.9 16.2 23.4
3 5.2 8.1 8.1 10.4 16.2 21.6 42.3
5.4 9 11.7 11.7 - - -
4 7.4 11.9 15.8 18.9 23.9 32.9 65.7
5 9.5 16.2 19.4 30.6 38.7 59.4 109.8
6 11.7 20.3 25.7 36.5 49.5 74.3 170.1
8 18.9 31.1 40.1 54 84.2 123.8 259.2
10 24.3 45 56.3 85.5 120.6 204.8 480.6
12 39.6 63.9 78.8 101.7 167.4 310.5 723.6
14 51.3 92.7 104.9 156.2 252.9 423 -
16 63 112.5 132.8 216.5 308.3 562.5 -
18 74.3 144 162 249.8 415.8 731.3 -
20 88.7 180 200.3 310.5 523.8 922.5 -
22 101.3 209.3 227.3 324 - - -
24 120 261 288 439.7 948.2 1496 -

Applications Of Low Carbon Steel Flange

  • Pressure Vessels

  • Petrochemical Industry

  • Food and Beverage

  • Shipbuilding

  • Power Generation

  • Water Supply and Distribution

  • Wastewater Treatment

  • Pharmaceutical Industry

  • Oil and Gas

  • Chemical Processing

Carbon Steel Flange Weight Calculator

Find Complete Information About CS Flange Weight Calculator


Carbon Steel Slip On Flange Sizes

Size in Inch Size in MM
1/2 DN15
3/4 DN20
1 DN25
1 1/4 DN32
1 1/2 DN40
2 DN50
2 1/2 DN65
3 DN80
4 DN100
5 DN125
6 DN150
8 DN200
10 DN250
12 DN300
14 DN350
16 DN400
18 DN450
20 DN500
24 DN600
Don't Forget To Check Gasket For Carbon Steel Forged Flanges, Working Temperature, and Pressure Rating in Class 150, 300, and 600

Class 150 Carbon Steel Flange Pressure Rating

-20 to 100°F 200°F 300°F 400°F 500°F
285 260 230 200 170
600°F 650°F 700°F 750°F 800°F
140 125 110 95 80
850°F 900°F 950°F 1000°F -
65 50 35 20 -

Class 300 Carbon Steel Flange Pressure Rating

-20 to 100°F 200°F 300°F 400°F 500°F
740 680 655 635 605
600°F 650°F 700°F 750°F 800°F
570 550 530 505 410
850°F 900°F 950°F 1000°F -
320 230 135 85 -

Class 600 Carbon Steel Flange Pressure Rating

-20 to 100°F 200°F 300°F 400°F 500°F
1480 1360 1310 1265 1205
600°F 650°F 700°F 750°F 800°F
1135 1100 1060 1015 825
850°F 900°F 950°F 1000°F -
640 460 275 170 -

Gasket For Carbon Flange

  • RF Gasket

  • FF Gasket

  • RTJ Gasket

  • Soft Gaskets

  • PTFE Gaskets

  • Oval Ring Gaskets

  • Spiral Wound Gasket

  • Metal Jacketed Gasket

  • Camprofile Gasket

  • Octagonal Ring Gasket

Carbon Steel Flange Bolt Chart

Size Number of Bolts RF Stud Length (inches) RTJ Stud Length (inches) Machine Bolt Length ISO Stud Size
DN15 4 2.25 - 50 M14
DN20 4 2.5 - 50 M14
DN25 4 2.5 3 55 M14
DN32 4 2.75 3.25 55 M14
DN40 4 2.75 3.25 65 M14
DN50 4 3.25 3.75 70 M16
DN65 4 3.5 4 75 M16
DN80 4 3.5 4 75 M16
DN90 8 3.5 4 75 M16
DN100 8 3.5 4 75 M16
DN125 8 3.75 4.25 85 M20
DN150 8 4 4.5 85 M20
DN200 8 4.25 4.75 90 M20
DN250 12 4.5 5 100 M24
DN300 12 4.75 5.25 100 M24
DN350 12 5.25 5.75 115 M27
DN400 16 5.25 5.75 115 M27
DN450 16 5.75 6.25 125 M30
DN500 20 6.25 6.75 140 M30
DN600 20 6.75 7.25 150 M33

Working Temperature Of High Carbon Steel Flanges

  • 800°F

  • 427°C

Types Of Carbon Steel Flanges

Carbon Steel Plate Flange

Carbon Steel Plate Flange

Galvanised Carbon Steel Nipo flange

Galvanised Carbon Steel Nipo flange

ASME B16.5 CS Orifice Flange

ASME B16.5 CS Orifice Flange

CS Bleed Ring Flange

CS Bleed Ring Flange

Low Carbon Steel Puddle Flanges

Low Carbon Steel Puddle Flanges

Carbon Steel Reducing Flange

Carbon Steel Reducing Flange

ANSI B16.5 Carbon Steel Ring Spacer

ANSI B16.5 Carbon Steel Ring Spacer

Quenching Low Carbon Steel Slip On Flange (SORF)

Quenching Low Carbon Steel Slip On Flange (SORF)

ANSI B16.47 Carbon Steel Spade Flange

ANSI B16.47 Carbon Steel Spade Flange

ASME B16.5 CS Forged Flanges

ASME B16.5 CS Forged Flanges

Killed Carbon Steel Socket Weld Flange (SWRF)

Killed Carbon Steel Socket Weld Flange (SWRF)

Carbon Steel Weld Neck Flange (WNRF)

Carbon Steel Weld Neck Flange (WNRF)

CS Long Weld Neck Flange

CS Long Weld Neck Flange

Steel Grades Carbon Weldo Flange

Steel Grades Carbon Weldo Flange

Quenching High Carbon Steel Threaded / Screwed Flanges

Quenching High Carbon Steel Threaded / Screwed Flanges

Carbon Steel Grade Raised Face Flange

Carbon Steel Grade Raised Face Flange

High Carbon Steel Male & Female Flange

High Carbon Steel Male & Female Flange

Black Carbon Steel Square Flanges

Black Carbon Steel Square Flanges

Galvanized Carbon Steel Blind Flange (BLRF)

Galvanized Carbon Steel Blind Flange (BLRF)

Low Temp Carbon Steel Spectacle Blind Flange

Low Temp Carbon Steel Spectacle Blind Flange

Nace Mr0175 Carbon Steel Lap Joint Flanges

Nace Mr0175 Carbon Steel Lap Joint Flanges

Normalized Carbon Steel Tongue & Groove Flange

Normalized Carbon Steel Tongue & Groove Flange

Plain Carbon Steel Ring Type Joint Flange (RTJ)

Plain Carbon Steel Ring Type Joint Flange (RTJ)

Quenching Carbon Steel High Hub Blind Flange

Quenching Carbon Steel High Hub Blind Flange

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