ASTM A105 Carbon Steel Blind Flanges

Flanges are integral to pipeline systems that connect pipes, valves, pumps, and other equipment. The type of flange used depends on the application and the nature of the fluid or gas being transported through the pipeline. One such popular flange type is the ASTM A105 Carbon Steel Blind Flange. It is commonly used in various industries, such as oil and gas, petrochemicals, and power generation.

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There are mainly two types of ASTM A105 Carbon Steel Blind Flange - Raised Face and Flat Face. Raised face blind flanges have a protruding lip around the circumference of the flange face, which provides a greater bearing surface for the gasket. It prevents the gasket from being pushed into the pipe. In contrast, flat-face blind flanges have a flat surface and are commonly used where pump nozzles need to be connected to vessels and tanks.

ASTM A105 Carbon Steel Blind Flange is widely used in pipeline systems for various applications such as the isolation of pipeline sections, maintenance work, and pressure relief. It is also used as a blanking-off tool at the end of a pipeline and a connecting tool for pipes, valves, and pumps. Moreover, ASTM A105 Carbon Steel Blind Flange is commonly used in high-pressure and high-temperature applications such as steam boilers, gas pipelines, and oil refineries.
Carbon steel blind flanges are durable and have high tensile strength. They resist corrosion, erosion, and heat, making them ideal for high-pressure and high-temperature applications. ASTM A105 Carbon Steel Blind Flange is designed to withstand extreme conditions, which makes it suitable for various industries such as oil and gas, petrochemicals, and power generation. Furthermore, blind flanges require less space and are easier to install, making them cost-effective compared to other flange types.

ASTM A105 Carbon Steel Blind Flange is a popular flange type widely used in various pipeline systems. Its unique design and properties make it ideal for high-pressure and high-temperature applications. The two types of blind flanges - raised face and flat face - provide flexibility in choosing the flange type per the requirements. Moreover, the benefits of ASTM A105 Carbon Steel Blind Flange, such as durability, resistance to corrosion, and easy installation, make it a preferred choice for various industries.


Yes, ASTM A105 Carbon Steel Blind Flanges are suitable for high-temperature applications. They are designed to withstand elevated temperatures, making them commonly used in industries such as power generation & petrochemical, where high-temperature conditions are encountered.

CS ASTM A105 Blind Flanges adhere to the ASTM A105 specification, which covers forged carbon steel piping components. They may also comply with industry-specific standards such as ASME B16.5 (for flange dimensions) and ASME B16.47 (for larger flange sizes).

CS ASTM A105 Blind Flanges are utilized in pipelines, refineries, & offshore platforms for their high-pressure and temperature capabilities. These flanges are suitable for petrochemical plants, connecting piping systems & equipment in demanding environments.

Specification of A105 Carbon Steel Blind Flanges

Spec bag
Blind Flange
Specifications: ASTM A105 / ASME SA105
Dimensions: ANSI/ASME B16.5, B 16.47 Series A & B, B16.48, BS4504, BS 10, EN-1092, DIN, etc.
Standard: ANSI Flanges, ASME Flanges, BS Flanges, DIN Flanges, EN Flanges, etc.
Size: 1/4" - 48"
Class/Pressure: 150#, 300#, 600#, 900#, 1500#, 2500#, PN6, PN10, PN16, PN25, PN40, PN64 etc.
Flange Face Type: flat face (FF), Raised Face (RF), Ring Type Joint (RTJ)

Types of ASTM A105 Carbon Steel Blind Flanges

Carbon Steel Flat Face Blind Flanges

CS ASTM A105 Flat Face Blind Flanges

  • - ASTM A105 Carbon Steel Flat Face Blind Flanges
  • - CS A105 Flat Face Blind Flanges
  • - ASTM A105 CS Flat Face Blind Flanges
  • - A105 Carbon Steel Flat Face BLRF Flanges
  • - ASME SA105 Carbon Steel Flat Face Blind Flanges
  • - A105N CS Flat Face Blind Flanges Supplier
  • - A105 Carbon Steel Flat Face Blind Flanges Manufacturer
Carbon Steel Raised Face Blind Flanges

CS ASTM A105 Raised Face Blind Flanges

  • - ASTM A105 Carbon Steel Raised Face Blind Flanges
  • - CS A105 Raised Face Blind Flanges
  • - ASTM A105 CS Raised Face Blind Flanges
  • - A105 Carbon Steel Raised Face BLRF Flanges
  • - ASME SA105 CS Raised Face Blind Flanges
  • - A105 Carbon Steel Raised Face Blind Flanges Supplier
  • - A105N CS Raised Face Blind Flanges Manufacturer

Carbon Steel Blind Flanges ASTM A105 Chemical Composition

Grade C Mn P S Si Cu Ni Cr Mo V
ASTM A105 ≤0.35 0.60-1.05 ≤0.35 ≤0.40 0.10-0.35 ≤0.40 ≤0.40 ≤0.30 ≤0.12 ≤0.08

Mechanical Properties of ASTM A105 Carbon Steel Blind Flanges

Tensile Strength min. Yield Strength min. Elongation min. Reduction of Area, min. Hardness
MPa ksi MPa ksi % % HBW
485 70 250 36 22 30 137-187

Application Industries

  • Refineries
  • Petrochemicals Industry
  • Oil & Gas Industry
  • Mining
  • Construction
  • Pharmaceuticals
  • Automobile