Why Carbon Steel Flanges Buyers in Saudi Arabia Trust pipingmaterial.sa B2B Marketplace?
ADNOC & Saudi Aramco Certified CS Flanges
A105 • A350 • A694 Grades
Hot & Cold Forging CS Pipe Flanges
Hot Forging • Rolling • Casting
KNPC & SABIC Approved Origin
American, German, European, Japanese Mills
Tensile, Hydro & PMI Tested
Hardness • Impact • Chemical Analysis Per ASME B16.5
MTC EN 10204 3.1/ 3.2
Heat Certificates • TPI Reports • Full Mill Traceability
Ex-Stock Saudi Arabia Delivery
Riyadh • Al Jubail • Dammam • Jeddah Same-Week
Carbon Steel Flanges Summary
- Size in Ready Stock: 1/2" to 48" | DN15 – DN1200
- Wall Thickness: SCH 5 to SCh 160
- Pressure Rating: Class 150, 300, 400, 600, 900, 1500 & 2500 | PN6 to PN400
- CS Flange Grade: ASTM A105, A350 LF2, A694 F52, F60, F65
- Types of Steel: Low Carbon, Medium Carbon, High Carbon, Normalized
- American Standard: ASME B16.5, B16.47, MSS SP44, API 6A
- Suitable For: Petrochemical, Oil & Gas, Refinery
- Manufacturing Process : Rolling, Hot Forging, Casting
- Coating: Oil Varnishing, Anti-rust Paint, Electric Zinc Coating
- MTC: EN 10204 3.1 / 3.2
- RFQ: contact@pipingmaterial.sa
Request for Carbon Steel Flanges Suppliers Profile for your Reference
Forged Carbon Steel Flanges with MTC EN 10204/3.1 at Wholesale Price in Saudi Arabia
Pipingmaterial.sa connects Saudi buyers directly with verified carbon steel flanges suppliers in Saudi Arabia with zero commission and no middlemen. Our management carries 26 years of experience in CS flanges supply across the Middle East.Every listed stockists and distributors holds Sabic, KNPC, ADNOC, Qatar Gas, Saudi Aramco approval with MTC EN 10204 3.1 documentation.
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Table of Content
- Carbon Steel Flange Material Specification
- How to Choose the Right Carbon Flanges for Saudi Projects?
- CS Flange Pressure Rating
- Carbon Steel Flange Grade
- Types of Carbon Steel Forged Flange for Petrochemical
- Cold and Hot Forging CS Pipe Flanges Process
- KNPC, Saudi Aramco and ADNOC Approved Carbon Steel Flanges Suppliers
- Why Choose Low Carbon Steel Flange?
- Carbon Steel Flange Thickness
- Which Welding Methods are Suitable for CS Pipe Flanges?
- Carbon Content of Carbon Steel Forged Flanges
- How To Prevent Carbon Steel Pipe Flanges From Rust?
- Documentation required to import CS Flanges to Saudi
- Which 9 Test Reports Saudi Buyers Should Ask Before Buying Carbon Flanges
- Top 12 Applications of Forged Carbon Steel Flanges
- Gasket for Carbon Steel Flange
- Class 150 Carbon Steel Flange Pressure Rating
- Class 300 Carbon Steel Flange Pressure Rating
- Recommended Fasteners for Carbon Steel Weld Flange
- Carbon Steel Flange Standard
- CS Flange Weight Chart
- Carbon Steel Flange Dimensions
- Industrial Carbon Steel Flange Chemical Composition
- Carbon Steel PN16 Flange Mechanical Properties
- CS Flange HSN Code
- Frequently Asked Questions - Carbon Steel Flanges
- Browse CS Flanges by Material & Grade
Carbon Steel Flange Material Specification
Buy From Carbon Steel Flanges Suppliers in Saudi Arabia Who Supply As Per Custom Specification
CS Flanges Sizes
- NPS: 1/2" to 48"
- Class: 150 to 2500#
- Schedule: Sch 5 to XXS
Carbon Steel Flange Threads
- BSPP, FNPT
- NPT
- MNPT, BSPT
Carbon Flange Supporting Material
- Gaskets
- Ring Joint
- Flange Bolts
CS Pipe Flange Packaging
- Bubble Wrap
- Plastic Wrap/Bags
- Anti-Tarnish Paper
Carbon steel Forged Flange Testing
- Hydrostatic Testing
- Ultrasonic Testing
- Tensile Testing
Carbon Steel Weld Flange Documentation
- MTC EN 10204 3.1
- Third Party Inspection
- 100% Radiography Test Report
Carbon Steel Pipe Flange Origin
- American, Korean
- Indian
- Japanese, European
CS Forged Flanges Coating
- Oil varnishing
- Electric zinc coating
- Anti-rust paint
Medium carbon steel Flange Sour Service
- NACE MR0103
- NACE MR0175
- Sour service
How to Choose the Right Carbon Flanges for Saudi Projects?
Understand the Environmental Challenges
Match the Right CS Flanges Grade
Check for Mandatory Material Enhancements
Select the Appropriate Pressure Class
Define the Flange Facing
Verify Operator Approval and Vendor Lists
Mandate Corrosion-Resistant Exterior Coating
Choose Right Surface Finish
Our Wide Clientele in Following Locations
🌎 Countries
South Africa
Nigeria
Egypt
Kenya
Ethiopia
Ghana
Tanzania
Sudan
Mozambique
Algeria
Morocco
Cameroon
Zambia
Angola
Ivory Coast
Senegal
Zimbabwe
Johannesburg
South Africa
Durban
South Africa
Lagos
Nigeria
Cairo
Egypt
Nairobi
Kenya
Addis Ababa
Ethiopia
Algiers
Algeria
Casablanca
Morocco
Oil and Gas Pipelines
High Temperature Steam Lines
Water Treatment Plants
Petrochemical & Refineries
High Pressure >Class 600
CS Flange Pressure Rating
- Class 150
- Class 300
- Class 400
- Class 600
- Class 900
- Class 1500
- Class 2500
Find ADNOC Approved Carbon Steel Flanges Suppliers in Saudi Arabia - Receive 3 to 5 Quotes in One RFQ
No commission · No login required · Direct contact with actual carbon steel flanges stockists in Riyadh and Jubail
Request Quote NowReady Stock of CS BLRF, SORF and WNRF flanges in Dammam according to ASME B16.5
Carbon Steel Flange Grade
ASTM A105N Normalized
NACE MR0175 and MR0103
Aramco Sour Service GradeTypes of Carbon Steel Forged Flange for Petrochemical
List of Locations Where We Have Frequent Deliveries
MENA Countries
North Africa & Levant — regular sea freight schedules
GCC Countries
All 6 GCC member states covered — ex-stock & indent supply
Middle East Regular Delivery Locations
Also covers Syria • Yemen • Iraq • Turkey on request
Cold and Hot Forging CS Pipe Flanges Process
Forging Method
Cold Forging
Room Temperature
VS
Forging Method
Hot Forging
Heavy Flanges
Process Conditions
Room Temperature (Below 150°C)
Working Temperature
1100°C to 1250°C
Small Size - 1/2" to 4"
Size Range
1/2" to 48"
Mechanical Properties
High - Work Hardening Effect
Surface Strength
Very High - Flow Alignment
Excellent - Tight Tolerances
Dimensional Accuracy
Good - Needs Machining After
Low - Less Material Waste
Material Waste
Moderate - Scale Forms on Surface
No Annealing Needed
Post Process Treatment
Annealing or Normalizing Required
Production & Standards
Fast - High Volume Output
Production Speed
Moderate - Setup Time Higher
ASTM A105 and ASME B16.5
Applicable Standard
ASME B16.5 and B16.47
Oil & Gas Pipeline
Saudi Aramco - Uthmaniyah GOSP Crude Oil Pipeline Flanges
1 Inch, Class 150, RF CS WNRF Flange, SCH 80
Uthmaniyah, Saudi Arabia
Petrochemical Plant
SABIC - Jubail Complex Process Piping Flange Connections
1 1/2, FF, CS SORF Flange, 150#, SCH 40
Jubail, Saudi Arabia
Water Treatment Plant
ACWA Power - Rabigh Desalination Plant Pipe Flange Assembly
2 Inch, SCH 10, RTJ, CS BLRF Flange, 300#
Rabigh, Saudi Arabia
Power Generation Plant
SEC - Riyadh PP11 Steam Line & Turbine Flange Joints
4 Inch, Class 150, FF, SCH 60, CS SWRF Flange
Riyadh, Saudi Arabia
Oil Refinery
KNPC - Mina Al Ahmadi Refinery High Pressure Process Lines
2 1/2 Inch, SCH 80, RF, Class 300#, CS THRF Flange
Al Ahmadi, Kuwait
Offshore Platform
ADNOC Offshore - Umm Lulu Field Subsea Pipeline Flange Joints
6 Inch, 150LB, SCH 40, CS LJRF Flange
Abu Dhabi, UAE
KNPC, Saudi Aramco and ADNOC Approved Carbon Steel Flanges Suppliers
Find SABIC, Saudi Aramco, and ADNOC approved carbon steel flanges suppliers in Saudi Arabia on pipingmaterial.sa with third-party inspection reports.
Saudi Aramco Approved Carbon Steel Flanges Suppliers
- Dynamic Forge & Fittings (India)
- Galperti Group (Italy)
- Nippon Steel Corporation (Japan)
- Voestalpine High Performance Metals (Austria)
SABIC Approved CS Flange Suppliers
- Sumitomo Metal Industries (Japan)
- Officine Ambrogio Melesi (Italy)
- Schoeller-Bleckmann (Austria)
- Butting GmbH & Co. KG (Germany)
KNPC & ADNOC Approved Carbon Flanges Suppliers
- Norsk Staal (France)
- Ramesh Steel Corporation (India)
- Tubacex (Spain)
- JFE Steel Corporation (Japan)
Qatar Gas Approved CS Pipe Flanges Suppliers
- Sandvik Materials Technology (Sweden)
- Galperti (Italy)
- Metachem International (India)
- Dai-ichi High Frequency Co. (Japan)
Need Compression Carbon Steel Forged Flanges Fast? Submit Your Specification Today
Share your CS flange Size, grade, type, quantity, and destination with us. Receive competitive quotes with MTC and ex stock confirmation from verified Saudi Arabia suppliers within 24 hours.
Request Quote NowWhy Choose Low Carbon Steel Flange?
Offer Saudi Aramco Approved Carbon Steel Pipe Flanges Ex.Stock in Custom Sizes and Wall Thickness With MTC EN 10204 3.1
Carbon Steel Flange Thickness
SCH 5 — Light Wall
Schedule 10 — General Use
SCH 40
Schedule 80 / XS
SCH 160
XXS - Extra Heavy
Which Welding Methods are Suitable for CS Pipe Flanges?
SMAW Welding
Most popular method for WNRF flange in Saudi projects - E7016 and E7018 electrode
GTAW Welding
Suitable for root pass of SWRF flanges on small bore - ER70S-2 filler wire
SAW Welding
Best for large diameter carbon steel flanges above 24" in Aramco pipeline projects
PWHT Welding
Compulsory for carbon steel flanges above 19mm wall thickness according to ASME B31.3
Carbon Content of Carbon Steel Forged Flanges
Low Carbon Steel Flange (0.005% to 0.3%)
Medium Carbon Steel Flange (0.3 to 0.8%)
High Carbon Steel Flange (0.8 to 2.0%)
Ultra High Carbon Steel Flange (1.25 to 2.0%)
How To Prevent Carbon Steel Pipe Flanges From Rust?
Connect Directly With Carbon Steel Flanges Stockists in Saudi Arabia
Submit your inquiry to pipingmaterial.sa for trusted CS flanges suppliers in saudi arabia keeping BLRF, WNRF, SORF and SWRF Flanges ex-stock
Request Quote NowDocumentation required to import CS Flanges to Saudi
Buyers in Yanbu, Al Jubail, Dammam, find Saudi Aramco approved distributors, dealers, stockists and manufacturers listed on pipingmaterial.sa online B2B marketplace the fastest way to source verified carbon flanges across Middle East.
Approved Certifications Carried
- SABIC Approved
- ADNOC & Qatar Gas
- KNPC Approved
- Saudi Aramco Approved
- ISO 9001:2015 QMS Certified
Stockists in Jeddah, Ras Al Khair, Yanbu, Rabigh
Documents Provided
- Cast Traceability and Heat Number
- 100% Dimensional Inspection Report
- ISO 15156 and NACE MR0175
- Mill Test Certificate
- Third Party Inspection Report
Full MTC EN 10204 3.1 package shipped with every order
Weekly Shipment to Europe
Netherlands
Amsterdam
France
Paris
Georgia
Tbilisi
Belgium
Brussels
Armenia
Yerevan
Germany
Berlin
Azerbaijan
Baku
Italy
Rome
Andorra
Andorra la Vella
Find Hydrostatic and PMI Tested Carbon Steel Lap Joint Flange Online for Petrochemical in Various Types
Which 9 Test Reports Saudi Buyers Should Ask Before Buying Carbon Flanges
PMI Test
Hydrostatic Test
Chemical Analysis
Hardness Test
Ultrasonic Testing
Tensile Testing
Impact Test
Magnetic Particle Test
Dimensional Inspection
Top 12 Applications of Forged Carbon Steel Flanges
Find the Qatar Gas Approved carbon steel flanges stockists in Saudi Arabia. Pipingmaterial.sa B2B ordering platform lists distributors and dealers covering all industrial sectors across Saudi Arabia.
Oil and Gas Pipelines
Petrochemical Plants
Oil Refineries
Desalination Plants
Power Generation Plants
Steam & Utility Lines
Gas Processing Facilities
Water Treatment Plants
Industrial & EPC Contractors
Mining & Minerals
Onshore & Offshore Pipelines
Chemical Plants
Gasket for Carbon Steel Flange
Spiral Wound Gasket
Most Popular Type
- Standard Thickness : 3.2 mm
- Color : Red Outer Ring
- Best for high pressure service
ASME B16.20
RTJ Gasket
High Temperature Service
- Thickness : 6 to 12mm
- Color : Silver and Grey
- Suitable for Oil Refineries
ASME B16.20 RTJ
Full Face Gasket
FF Flanges
- Thickness : 1.5 to 3 mm
- Color : Black
- Ideal for Carbon Steel Flat Face Flange
ASME B16.21
CAF and CNAF Gasket
Carbon Steel Raised Face Flanges
- Thickness : 1.5 to 2 mm
- Color : Dark Brown and Red
- Compressed Non Asbestos Fiber material
Approved in Oil & Gas
Kammprofile Gasket
Best for Heat Exchanger Service
3mm thickness with
PTFE and Graphite Facing
PTFE and Graphite Facing
- Color : Black Graphite and Silver Core
- Used in Heat Exchangers
High Temperature Rated
Graphite Sheet Gasket
Extreme Temperature
- Thickness : 1.5 to 3 mm
- Color : Pure Black
- Best for Chemical Service
Handles 500°C Max.
Purchase Carbon Steel Plate Flanges Pressure Class 150 to 2500, Refer Dimensions and Weight Chart as per ASME B16.5
Class 150 Carbon Steel Flange Pressure Rating
| Temperature | Class 150 Flange |
|---|---|
| 800°F | 80 |
| 750°F | 95 |
| 700°F | 110 |
| 650°F | 125 |
| 600°F | 140 |
| 500°F | 170 |
| 400°F | 200 |
| 300°F | 230 |
| 200°F | 260 |
| -20 to 100°F | 285 |
Class 300 Carbon Steel Flange Pressure Rating
| Temperature | Class 300 Flanges |
|---|---|
| 800°F | 410 |
| 750°F | 505 |
| 700°F | 530 |
| 650°F | 550 |
| 600°F | 570 |
| 500°F | 605 |
| 400°F | 635 |
| 300°F | 655 |
| 200°F | 680 |
| -20 to 100°F | 740 |
Discover Our Ready Inventory in These Locations
Singapore
City-State
Thailand
Bangkok
Myanmar
Naypyidaw
Philippines
Manila
Cambodia
Phnom Penh
Malaysia
Kuala Lumpur
Laos
Vientiane
Taiwan
Taipei
Indonesia
Jakarta
Brunei
Bandar Seri
Vietnam
Ho Chi Minh
Mongolia
Ulaanbaatar
Recommended Fasteners for Carbon Steel Weld Flange
Heavy Hex Nuts
Nut Pairing
- ASTM A194 Grade 2H
- 175,000 psi Proof load
ASTM A194
Low Temperature Bolts
Low Temp Service
- ASTM A320 L7
- Suitable for LNG Projects
ASTM A320 Certified
Stainless Steel Bolts
Corrosive Environment
- ASTM A193 B8 and B8M
- Used in corrosive environments
ASTM A193
Spring and Flat Washers
Load Distribution
- F436 Washers
- Distributes clamping load on flange face
ASME B18.22.1
Lubrication and Torque
Installation Critical
- Cross pattern tightening mandatory
- Torque as per ASME PCC-1
ASME PCC-1 Required
Carbon Steel Flange Standard
ASME B16.5 ( Pipe Flanges Class 150 to 2500)
ASME B16.47 ( Large Diameter Flanges)
MSS SP44 (Steel Pipeline Flanges)
API 6A (American Standard)
EN 1092-1 ( European Standard)
ASME B16.36 (Orifice Flanges)
ASTM A105M ( Forgings for Piping)
ASME B31.3 ( Process Piping Code)
CS Flange Weight Chart
| Sizes | Carbon Steel Blind Flange (KG) | Carbon Steel Slip On Flange (KG) | Carbon Steel Weld Neck Flange (KG) |
|---|---|---|---|
| DN600 | 185.0 | 86.9 | 115 |
| DN500 | 122.0 | 61.9 | 84.5 |
| DN450 | 93.7 | 48.9 | 68.3 |
| DN400 | 76.1 | 44.8 | 60.6 |
| DN350 | 58.1 | 34.6 | 48.4 |
| DN300 | 43.2 | 26.2 | 36.5 |
| DN250 | 28.6 | 16.5 | 24 |
| DN200 | 19.6 | 12.1 | 17.6 |
| DN150 | 11.3 | 7.5 | 10.6 |
| DN125 | 8.6 | 6.1 | 8.6 |
| DN100 | 7.0 | 5.3 | 6.8 |
| DN90 | 6.2 | 4.8 | 6.1 |
| DN80 | 4.9 | 3.9 | 4.9 |
| DN65 | 3.9 | 3.3 | 4.1 |
| DN50 | 2.4 | 2.1 | 2.6 |
| DN40 | 1.5 | 1.3 | 1.7 |
| DN32 | 1.2 | 1 | 1.3 |
| DN25 | 0.9 | 0.8 | 1 |
| DN20 | 0.6 | 0.6 | 0.7 |
Carbon Steel Flange Dimensions
| Size | 1/4 | 1 | 1-1/2 | 1/2 | 3/4 | 2-1/2 | 2 | 4 | 3 | 6 | 5 | 12 | 8 | 14 | 10 | 18 | 16 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Dia of Bolt Circle (K) | 88.9 | 79.2 | 177.8 | 60.5 | 69.9 | 139.7 | 120.7 | 190.5 | 152.4 | 241.3 | 215.9 | 431.8 | 298.5 | 476.3 | 362 | 577.9 | 539.8 |
| Dia of Bolt Holes (L) | 15.7 | 15.7 | 19.1 | 15.7 | 15.7 | 19.1 | 19.1 | 19.1 | 19.1 | 22.4 | 22.4 | 25.4 | 22.4 | 28.4 | 25.4 | 31.8 | 28.4 |
| Thickness of Flange (B) | 15.7 | 14.2 | 23.9 | 11.2 | 12.7 | 22.4 | 19.1 | 23.9 | 23.9 | 25.4 | 23.9 | 31.8 | 28.4 | 35.1 | 30.2 | 39.6 | 36.6 |
| OD of Flange (D) | 117.3 | 108 | 215.9 | 88.9 | 98.6 | 177.8 | 152.4 | 228.6 | 190.5 | 279.4 | 254 | 482.6 | 342.9 | 533.4 | 406.4 | 635 | 596.9 |
| Dia of Raised Face (G) | 63.5 | 50.8 | 139.7 | 35.1 | 42.9 | 104.6 | 91.9 | 157.2 | 127 | 215.9 | 185.7 | 381 | 269.7 | 412.8 | 323.9 | 533.4 | 469.9 |
| Approx Weight (kg) | 1 | 1 | 6 | 0.5 | 1 | 3 | 2 | 8 | 4 | 12 | 9 | 50 | 20 | 64 | 32 | 100 | 82 |
| No of Bolt Holes | 4 | 4 | 8 | 4 | 4 | 4 | 4 | 8 | 4 | 8 | 8 | 12 | 8 | 12 | 12 | 16 | 16 |
Silicon (Si)
ASTM A105 : 0.10–0.35% and ASTM A350 LF2 : 0.15–0.30%
Phosphorus (P)
ASTM A105 : max 0.030% and ASTM A350 LF2 : max 0.035%
Sulphur (S)
ASTM A105 : max 0.040% and ASTM A350 LF2 : max 0.040%
Carbon (C)
ASTM A105 : max 0.35% and ASTM A350 LF2 : max 0.30%
Manganese (Mn)
ASTM A105 : 0.60–1.05% and ASTM A350 LF2 : 0.60–1.35%
Copper (Cu)
ASTM A105 : max 0.40% and ASTM A350 LF2 : max 0.40%
Carbon Steel PN16 Flange Mechanical Properties
Tensile Strength
- ASTM A105 : 70,000 psi
- ASTM A350 LF2 : 70,000 psi
Yield Strength (min.)
- ASTM A105 : 250 MPa
- ASTM A350 LF2 : 250 MPa
Elongation (min.)
- ASTM A105 : 22%
- ASTM A350 LF2 : 22%
Hardness in HBW (max.)
- ASTM A105 : 187
- ASTM A350 LF2 : 197
Frequently Asked Questions - Carbon Steel Flanges
Yes, all listed suppliers on pipingmaterial.sa supply CS flanges with full EN 10204 3.1 report.
Yes, listed manufacturers can forge custom size (Up to 72) carbon steel pipe flanges as per your drawing or project requirement.
Mention PMI (positive material identification) test requirement in your RFQ. Verified distributors will include PMI report with MTC at no extra charges.
Ex-stock NDT tested CS PN16 flanges can be delivered to Riyadh and Al Jubail within 2 to 3 working days.
Yes, listed stockists keep selected large diameter carbon flanges ex-stock.
Yes, stockists and suppliers supply CS pipe flanges with oil varnish, epoxy coating, anti rust paint, or zinc plating as per buyer requirement.
No, dual marking is only possible when material meets both standards.
Browse CS Flanges by Material & Grade
Ready to Order Carbon Steel Forged Flanges? Get Your Quote Today
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