ASTM A181 Flanges

A material specification known as ASTM A181 grade 1 covers carbon steel nonstandard as-forged pipeline components used in industrial piping applications, including flanges, pipe fittings, rings, valve components, round bars, and many more forging parts. The two classes covered by its specification are ASTM A181 classes 60 and 70. The maximum weight for forgings fabricated in accordance with this specification is 10,000 pounds.

Weld neck, slip-on, threaded, socket-welded, orifice, spectacle-blind, long weld neck, reducing, and other types of ASTM A181 flange are among the available varieties.

SA 181 Gr 1 can be used in a variety of applications and industries. Its strength has grown. Although it is less common than other forms of steel, it can be strained and crack under pressure.It works especially well in applications that require strength thanks to its a181 gr 1. While steel grades typically have a variety of alloying components, SA-181-70 shares the same basic composition of carbon and iron. It contains up to 2.1% of carbon by weight. Additionally, after heat treatment, it gets stronger and tougher as the carbon element percentage rises. Conversely, its ductility decreases. However, it becomes less weldable without heat treatment.

Standard Specification Of ASTM A181 flange

  • Material : ASTM A181 Class 70 CL1/CL2
  • Size Range: 1/2″ (15 NB) to 48″ (1200NB), ASME B16.47 Flanges size range: 26″ to 60″
  • Typical manufacturing specifications: A181 Grade 60 , ASME A181 Grade 60, MSS SP 44, ASME B16.47, ASME B16.5, NORSOK L-005, API 6A
  • Origin: European Origin, Indian Origin, US Origin, Korean Origin, Sweden Origin, Ukraine Origin, Japanese Origin Materials
  • A181 CL70 Carbon Steel Flanges Manufacturing 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.
  • Class / Pressure: 150#, 300#, 600#, 900#, 1500#, 2500#, PN6, PN10, PN16, PN25, PN40, PN64 etc.
  • Flange Face Type: Flate Face (FF), Raised Face (RF), Ring Type Joint (RTJ), LJ, FM , R.T.J , R.J and so on
  • ANSI A181 CL70 Carbon Steel Flanges: 150 to 2500 Size: 1/2″-24″
  • AWWA A181 CL70 Carbon Steel Flanges: classes B, D, E, F Size: 3″-144″
  • ANSI B16.5 ASTM A181 Class 70 Carbon Steel Flanges pressure classes: 150, 300, 400, 600, 900, 1500 and 2500 for ASME B16.5
  • ANSI B16.47 ASTM A181 Class 70 Carbon Steel Flanges pressure classes: 75, 150, 300, 400, 600, 900 for ASME B16.47

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