ASTM A105 Carbon Steel Flanges Manufacturer & Supplier in USA

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Carbon Steel A105 Flanges, CS A105 Flanges, High-Quality ASTM A105 Carbon Steel Flanges, ASME SA105 Carbon Steel Flanges, ASTM A105 CS Flanges, ASTM A105 Forged Flanges, Carbon Steel A105 Flanges Suppliers, CS A105 Flanges Exporters, Carbon Steel A105 Socket Weld Flanges, ANSI B16.5 Carbon Steel Flanges Leading Manufacturers

USA Piping Solution is a reputable manufacturer and supplier of ASTM A105 and A105N Carbon Steel Flanges that are of high strength, dimensionally accurate, and have a long service life. Such flanges are made of high-quality carbon and iron with regulated quantities of manganese, silicon, and phosphorus to make them more strong in mechanical properties and to ensure their performance in case of pressure. All A105 forged flanges are manufactured according to the ASME B16.5, ASME B16.47, and EN 1092 standards, and thus they can be used in industrial piping systems, where accuracy and safety are important.

ASTM A105 Carbon Steel Flanges

We have our Carbon Steel A105 Flanges that have wide application in oil and gas and petrochemical and power generation, and process industries. They come in Blind, Slip On, Weld Neck, Threaded, and Socket Weld designs to meet the different project needs. These flanges are an effective and economical method of connecting pipelines and valves due to their durability, weldability, and corrosion resistance.

Included in our general scope of Carbon Steel Flanges, USA Piping Solution offers customized production, on-time delivery, and full traceability of the material used to satisfy the international project standards.

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ASTM A105 / A105N Flanges Overview

Parameter Specification Details
Available Sizes ½” to 48”
Flange Types Blind, Slip-On, Weld Neck, Threaded, Socket Weld
Pressure Rating ASME Class 150 to 2500
Yield Strength 70,000 PSI (Min.)
Hardness 187 HBW
European Standard EN 1092 Series
JIS Standard B2311 / B2220
Facing Options RF, FF, RTJ
Melting Point 1420°C Approx.
Quality Assurance All flanges are 100% inspected and mill-test certified.

Carbon Steel ASTM A105 Flanges Specification

Parameter Specification Details
Standards ASME B16.5, ASME B16.47 Series A & B, EN 1092, DIN, BS 4504, B16.48, BS 10, JIS B2220, GOST, ANSI, and API 6A
Size Range ½ inch (15 NB) to 48 inch (1200 NB) – DN10 to DN5000
Pressure Ratings ASME Class 150, 300, 600, 900, 1500, 2500
Manufacturing Method Forged, Heat Treated, and Precision Machined for Dimensional Accuracy
Design Availability Custom-built flanges as per ASME, ANSI, DIN, BS, and JIS standards
Configurations Available in Equal and Reducing Types
Flange Face Options Raised Face (RF), Flat Face (FF), Ring Type Joint (RTJ), Lap Joint (LJF), Small Male-Female (SMF), Large Male-Female (LMF), Tongue and Groove (T&G)
Maximum Bore Size Up to NPS 10
Available Sizes Minimum ½ inch to Maximum 48 inch
Country of Origin Manufactured using raw materials sourced from India, Japan, Korea, Western Europe, and the USA
JIS Pressure Classes 5K, 10K, 16K, 20K, 30K, 40K, 63K
EN Pressure Ratings (A182) 6 Bar, 10 Bar, 16 Bar, 25 Bar, 40 Bar
Inspection & Test Certificates EN 10204 Type 3.1 / 3.2, Raw Material Test Certificate, Radiographic Test Report, Ultrasonic Test Report, and Third-Party Inspection on request
Applications Widely used in Oil & Gas, Power Generation, Petrochemical, Chemical, Shipbuilding, Water Treatment, and Construction Sectors

Chemical Composition of ASTM A105 / A105N Carbon Steel Flanges

Grade C Si Mn P S Mo Ni Cr Cu V
A105 0.35 0.10–0.35 0.60–1.05 0.035 0.040 0.12 0.40 0.30 0.40 0.08

Mechanical Properties of ASTM A105 / A105N Carbon Steel Flanges

Grade Yield Strength, Min (MPa) Tensile Strength, Min (MPa) Elongation, Min (%)
A105 250 485 30

Different Types of ASTM A105 / A105N Carbon Steel Flanges

CS A105 Slip On Flanges

CS A105 Slip On Flanges

Carbon Steel ASME SA105 Weld Neck Flanges

Carbon Steel ASME SA105 Weld Neck Flanges

A105 CS Lap Joint Flanges

A105 CS Lap Joint Flanges

Carbon A105 Threaded Flanges

Carbon A105 Threaded Flanges

CS A105 Socket Weld Flanges

CS A105 Socket Weld Flanges

Carbon Steel ASME SA105 Long Weld Neck Flanges

Carbon Steel ASME SA105 Long Weld Neck Flanges

A105 CS Weldo / Nipo Flanges

A105 CS Weldo / Nipo Flanges

Carbon A105 Orifice Flanges

Carbon A105 Orifice Flanges

CS A105 Plate Flange

CS A105 Plate Flange

Carbon Steel ASME SA105 Forged Flanges

Carbon Steel ASME SA105 Forged Flanges

A105 CS Blind Flanges

A105 CS Blind Flanges

Carbon A105 Reducing Flanges

Carbon A105 Reducing Flanges

CS A105 Flat Flanges

CS A105 Flat Flanges

Carbon Steel ASME SA105 Insert Flanges

Carbon Steel ASME SA105 Insert Flanges

A105 CS Jacket Insert Flanges

A105 CS Jacket Insert Flanges

Carbon A105 Standard Insert Flanges

Carbon A105 Standard Insert Flanges

CS A105 Loose Flanges

CS A105 Loose Flanges

Carbon Steel ASME SA105 RTJ Flanges

Carbon Steel ASME SA105 RTJ Flanges

A105 CS SORF Flanges

A105 CS SORF Flanges

Carbon A105 Square Flanges

Carbon A105 Square Flanges

CS A105 SWRF Flanges

CS A105 SWRF Flanges

Carbon Steel ASME SA105 Expander Flanges

Carbon Steel ASME SA105 Expander Flanges

A105 CS WNRF Flanges

A105 CS WNRF Flanges

Carbon A105 Tongue & Groove Flanges

Carbon A105 Tongue & Groove Flanges

Dimensional Specifications of ASTM A105N Carbon Steel Blind Flanges

NPS (Inch) Weight of (B) RF Dia (C) Bolts Circle Dia (D) Bolt Holes Dia Weight (Kg) Pipe Flange Bolt Holes
1/27/161-3/82-3/85/824
23/43-5/84-3/43/444
2-1/27/84-1/85-1/23/474
3/41/21-11/162-3/45/824
19/1623-1/85/824
1-1/211/162-7/83-7/85/834
315/16563/494
3-1/215/165-1/273/4138
81-1/810-5/811-3/47/8478
101-3/1612-3/414-1/416712
415/166-3/167-1/23/4178
515/167-5/168-1/27/8208
618-1/29-1/27/8278
121-1/41517112312
181-9/162122-3/41-1/421716
141-3/816-1/418-3/41-1/813912
161-7/1618-1/221-1/41-1/818716
201-11/1623251-1/428320
241-7/827-1/429-1/21-3/841520

Applications of ASTM A105 / A105N Carbon Steel Flanges

  • Oil & Gas Pipelines: Used for high-pressure flow lines, refineries, and offshore platforms.
  • Petrochemical Plants: Suited for systems that deal with hydrocarbons, steam, and process chemicals.
  • Power Production: The material is used in the steam, turbine, and boiler piping systems to provide a solid seal.
  • Chemical Processing Unit: A unit that is resistant to corrosive media in acid, fertilizer, and solvent plants.
  • Water Treatment and Desalination: Used to make a high-pressure water system with leak-free connections.
  • Shipbuilding and Marine Applications: Suitable for seawater pipelines and on-board fluid transfer.
  • Construction and Infrastructure Projects: Used in HVAC, plumbing, and structural pipeline layouts.
  • Metallurgy and Steel Plants: Also used to support high-temperature material handling and process lines.
  • Food and Beverage Industry: This material is used especially in the food industry, where durable and hygienic pipeline fittings are required.
  • Global Engineering Projects: Most of the engineering industries use this as the best choice for EPC contractors and industrial maintenance.

FAQ on ASTM A105 / A105N Carbon Steel Flanges

What is ASTM A105 Carbon Steel Flange?

ASTM A105 Carbon Steel Flange is a forged steel component that is used to join high-pressure valves and pipes in many different industries, such as chemical processing, oil transport, and marine.

What is the ASTM standard for Carbon Steel Flanges?

The standard of Carbon steel flanges that are mostly used by many industries is usually ASTM A105.

What is the difference between A105 and Carbon Steel?

The A105 is used to make flanges; on the other hand, carbon steel is just a predominant element is carbon. The A105 is stronger, heat-resistant, and perfectly composed.

What is ASTM A105 equivalent material?

The most common equivalent material of ASTM A105 is C22.8 (Germany), A350 LF2, and P250GH (Europe).

What are the dimensions of ASTM A105 Flanges?

ASTM A105 flanges come in sizes from ½ inch to 48 inches and pressure classes 150 to 2500, as per ASME B16.5 and B16.47 standards. Other than that, the size of the flange depends on the type.

What is the pressure rating of ASTM A105 Flanges?

The A105 flanges come in a pressure ranging between 150 and 2500 depending on the maximum pressure and temperature boundaries of the flange according to the ASME B16.5 specifications.

Where to buy ASTM A105 Carbon Steel Flanges in the USA?

You can easily buy ASTM A105 flanges from USA Piping Solution, offering Blind, Weld Neck, and Slip-On flanges in custom sizes with mill test certificates and worldwide delivery.

What are the mechanical properties of ASTM A105 Flanges?

The mechanical properties of ASTM 105 flanges are as follows, tensile strength is 485MPa, yield strength is 250MPa, and the maximum elongation is 22 percent.

What is the material composition of ASTM A105 Flanges?

ASTM A105 is strong, weldable, and resistant to heat as it contains carbon, manganese, phosphorus, sulfur, and silicon.

Is ASTM A105 suitable for high temperature and pressure applications?

Yes, ASTM A105 flanges are both strong and resistant to corrosion, which makes them suitable for high-pressure, high-temperature systems.

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Application Industries



Boilers Boilers

Heat Exchangers Heat Exchangers

Power Plants Power Plants

Steam Piping Steam Piping

Refineries Refineries

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