Product description 
  Spectacle Blind Flanges Features 
  Forming:forged SIZE:1/2\"---48\" 
  Standard:ASME B16.48 
  Spectacle Blind Flanges Materials 
  Stainless Steel : 
  OCr18Ni9, 0Cr18Ni9Ti, 1Cr18Ni9Ti, 0Cr18Ni12Mo2Ti, 00Cr19Ni10, 00Cr17Ni14Mo2, 
  ASTM A182-F304, F304L, F304H, F316, F316L, F321, F321H, F347 
  
 
  Super Stainless Steel: 
  ASTM A182-904L, 317, 317L 
  
 
  Duplex Stee: 
  ASTM A182-F51, F53, F44 
  
 
  Special steel: 
  N06600, N08800, N08811 
  
 
  Alloy Steel: 
  16Mn, 12CrMo, 15Cr5Mo, Cr5Mo, 12Cr1MoV, ASTM A182-F11, F22, F91 F9 F5 
  
 
  Pipeline Steel: 
  ASTM A694-F42, F46, F48, F50, F52, F56, F60, F65, F70, F80 
  
 
  Carbon Steel: 
  ASTM A350-LF2, LF3 Q235A, 20#, ASTM A105 
  
 
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