Carbon Steel Flanges are mechanical connectors that join pipes, valves, pumps, and other equipment in piping systems. Built for strength and reliability, they are forged from carbon-rich steel and are available in various types like weld neck, slip-on, blind, socket weld, and threaded flanges. Midland Alloys Inc. is a leading carbon steel flanges manufacturer in India. We meet ASTM A105/ASME SA105 and A105N4 requirements and produce flanges in a variety of grades, including ASTM A105 and A350 LF2. These flanges come with surface finishes like black coating, anti-rust oiling, galvanized, or machined finish depending on the project requirement.

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carbon-steel-flanges

Benefits of Using Carbon Steel Flanges

Carbon Steel Flanges offer an excellent balance of strength, cost, and performance. They’re widely chosen for both standard and high-pressure applications due to the following advantages:

  • High Strength and Durability: Made to withstand mechanical stress and high pressures in industrial systems.
  • Weldability: Carbon steel offers easy and reliable welding for permanent, leak-free joints.
  • Corrosion Resistance: With suitable coatings, they resist rust and chemical exposure in tough environments.
  • Temperature and Pressure Resistance: Withstand high thermal and pressure variations across oil, gas, and steam systems.
  • Cost-Effectiveness: Compared to stainless or exotic alloys, CS flanges offer solid performance at a lower price point.

Carbon Steel Flanges Specifications

Finish
Sizes in Stock

Seamless Tube OD : 1/2″ to 48″
Welded Tube OD : 6.00 mm OD up to 914.4 mm OD
EFW Tube Size : 3.35 mm OD To 101.6 mm OD

ASTM Standard
Standard

ASTM A105 / ASME SA105, A105N

Process
Manufacturing Process

Seamless / Welded / ERW / Fabricated / CDW / 100% X Ray Welded

Form
Form

Round, Square, Rectangular, Hydraulic Etc

Length
Length

Single Random, Double Random, Standard & Cut length Tube

End Icon
End

Plain End, Beveled End, Treaded Tube

Schedule
Schedule

SCH 5, SCH10, SCH 40, SCH 80, SCH 80S, SCH 160, SCH XXS, SCH XS

Finish
Surface Finish

2B, No.4, No.1, No.8 Mirror Finish for Stainless Steel Tubes, Finish as per customer Requirements

Contact Midland Alloys Inc. for Your Carbon Steel Flanges Needs

Contact us today to discuss how Carbon Steel Flanges can benefit your application. Whether you need guidance in selecting the right Tubes or have specific requirements, our team of experts is here to help you find the optimal solution.

Carbon Steel Flanges Grades We Offer

Carbon Steel Flanges vs Hastelloy Flanges

While Carbon Steel Flanges are known for their strength, weldability, and affordability, Hastelloy Flanges are used in extremely corrosive environments due to their high nickel-molybdenum content. Although Hastelloy is much more expensive, it has better chemical resistance. Carbon steel, on the other hand works well in high-pressure, general-purpose applications where severe chemical resistance is not a top concern. While Hastelloy is better suited to harsh acidic or oxidizing service conditions, carbon steel remains the material of choice for industries such as petrochemical and general pipeline services.

Round Bar

Round Bar

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Analytic

Analytic

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Cut to Length

Cut to Length

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Centering

Centering

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Heating

Heating

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Perforation

Perforation

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Inspection of Size

Inspection of Size

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Pickling

Pickling

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Inspection of Surface

Inspection of Surface

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Lubricating

Lubricating

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Cold Drawing (Cold Rolling)

Cold Drawing (Cold Rolling)

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Degreasing

Degreasing

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Annealing

Annealing

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Straightening

Straightening

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Cut

Cut

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Pickling / Passivating

Pickling / Passivating

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Inspection

Inspection

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Analytic

Analytic

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Marking

Marking

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Packing & Shipping

Packing & Shipping

Applications of Carbon Steel Flanges

Carbon steel flanges are used in many different industries, because of their affordability and mechanical reliability. In the oil and gas industry, they are vital in pipelines, refineries, and offshore rigs, handling pressure cycles and temperature shifts. Carbon steel blind flanges are used in chemical industry reactors, tanks, and pressure vessels because of their corrosion-resistant coating options and structural strength. In water treatment plants, carbon steel flange fittings ensure leak-proof connections in both clean and wastewater systems. These flanges are essential to power generation facilities, such as thermal, nuclear and hydroelectric stations, because of their resilience to load and heat stress.

Why Choose Midland Alloys Inc. for Carbon Steel Flanges

With years of experience in supplying high-performance Carbon Steel Flanges, Midland Alloys Inc. delivers products built to last. We maintain a strong in-house inventory, offer precision cutting services, and ensure secure export packaging for global deliveries. Every product meets strict ASTM, ASME, and ISO standards. We provide third-party inspection coordination and complete material traceability for customer assurance.

FAQs

Carbon Steel Flanges are typically available in pressure classes ranging from 150 to 2500 as per ANSI B16.5 standards.

Yes, Low Temperature Carbon Steel (LTCS) flanges, such as A350 LF2, are specifically designed for cryogenic and sub-zero conditions

Yes, flanges can be hot-dip galvanized for improved corrosion protection, especially in outdoor or marine environments.

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