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ASTM A691 Pipes

Original price was: $1,489.00.Current price is: $162.00.

Delivery Time – Limited Stock
Specifications – ASTM A691 Alloy Steel Pipes
  • Size Range: 2” to 72” NB

  • Wall Thickness: SCH 20 to SCH XXS or Custom

  • Manufacturing Process: Welded (EFW) from A387 Alloy Steel Plates

  • Material Grades:

    • ASTM A691 Grade 1-½Cr-½Mo

    • ASTM A691 Grade 2¼Cr-1Mo

    • ASTM A691 Grade 5Cr-½Mo

    • ASTM A691 Grade 9Cr-1Mo

    • Others on request

  • Heat Treatment: PWHT (Post Weld Heat Treated)

  • Standards:

    • ASTM A691 / ASME SA691

    • ASME B31.1, B31.3

  • Applications:

    • Power Plants (Superheated Steam)

    • Oil & Gas Refineries

    • High-Temperature Fluid Transport

  • Certifications: EN 10204 3.1 / 3.2, IBR, PED, NACE (on request)

ASTM A691 Pipes are welded ferritic alloy steel pipes manufactured by fusion welding followed by heat treatment. These pipes are designed for high-temperature and high-pressure service, primarily in refineries, petrochemical plants, and power generation systems where superior strength, corrosion resistance, and long-term durability are essential.

The standard covers a wide range of chrome-moly steel grades (such as 1Cr-½Mo, 2¼Cr-1Mo, 9Cr-1Mo) and allows for custom configurations in terms of wall thickness, diameter, and grade combinations. Unlike seamless pipes, it uses welded construction with filler metal of matching chemical composition, offering both flexibility and cost-efficiency for large-diameter pipe applications.

Pipes under ASTM A691 are typically manufactured from plate (A387) using electric fusion welding (EFW), and are post-weld heat treated (PWHT) to ensure uniformity and mechanical integrity. They are particularly suitable for steam pipelines, heaters, and critical service piping that experiences elevated temperatures and aggressive media. click here for P11 Pipes

At Middle East Piping, we supply ASTM A691 alloy steel pipes with full EN 10204 3.1 / 3.2 certification and TPI inspection as required. Our stock and sourcing capability allows us to deliver to EPC contractors and industrial clients across Saudi Arabia, UAE, Qatar, Bahrain, and Oman with short lead times. click here for valves

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