ASME B16.48 Paddle Blanks in A105 forged steel are essential isolation tools for piping systems. Unlike permanent blind flanges, these "skillet" or "spade" blanks are designed for temporary shut-off during maintenance or inspection. The A105 grade ensures high strength and temperature resistance for pressure-containing applications. Featuring a solid disc and a protruding handle for easy identification and handling, they fit between two flanges to provide a positive mechanical seal in refineries and power plants.
Technical attributes
Standard: ASME B16.48
Material Grade: ASTM A105
Product Type: Paddle Blank / Spade
Pressure Class: 150 to 2500 LBS
Size Range: NPS 1/2 to NPS 24
Manufacturing: Forged or Plate Cut
Facing Type: Raised Face (RF)
Surface Finish: 125-250 AARH (Serrated)
Carbon Content: Max 0.35 percent
Manganese Content: 0.60 to 1.05 percent
Yield Strength: Min 250 MPa
Tensile Strength: Min 485 MPa
Handle Type: Integral or Welded
Handle Marking: Required (Size/Class/Material)
Heat Treatment: Normalized (if required)
Hardness: Max 187 HBW
Certification: EN 10204 3.1
Service Use: Temporary Isolation / Shutdown
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