Product description 
  Long Neck Flanges Features 
  
 
  Forming: forged 
  WELDING NECK RISE FACE REDUCER FLANGE(Long NECK ) 
  Long Neck Flange Materials 
  Stainless Steel: 
  OCr18Ni9, 0Cr18Ni9Ti, 1Cr18Ni9Ti, 0Cr18Ni12Mo2Ti, 00Cr19Ni10, 00Cr17Ni14Mo2, 
  ASTM A182-F304, F304L, F304H, F316, F316L, F321, F321H, F347H 
  
 
  Super Stainless Steel: 
  ASTM A182-904L, 317, 317L 
  
 
  Duplex Steel: 
  ASTM A182-F51, F53, F44 
  
 
  Special Steel: 
  N06600, N08800, N08811 
  
 
  Alloy Steel: 
  16Mn, 12CrMo, 15Cr5Mo, Cr5Mo, 12Cr1MoV, ASTM A182-F11, F22, F91 F9 F5 
  
 
  Pipe Line: 
  ASTM A694-F42, F46, F48, F50, F52, F56, F60, F65, F70, F80 
  
 
  Carbon Steel: 
  ASTM A350-LF2, LF3 Q235A, 20#, ASTM A105 
  
 
  Long Neck Flanges Dimensions & Standard & Rate 
  DIN2631 DN10-DN200 PN6 
  DIN2632 DN10-DN200 PN10 
  DIN2633 DN10-DN200 PN16 
  DIN2634 DN10-DN100 PN25 
  DIN2635 DN10-DN600 PN40 
  DIN2636 DN10-DN400 PN64 
  DIN2637 DN10-DN350 PN100 
  DIN2638 DN10-DN300 PN160 
  DIN2627 DN10-DN200 PN400 
  DIN2628 DN10-DN250 PN250 
  DIN2629 DN10-DN250 PN320 
  ASME/ANSI B16.5 1/2\"-24\" 150LB 300LB 600LB 900L 1500LB 
  1/2\"-12\" 2500LB 
  ASME B16.47 Serie A/B 26\"-60\" 150LB 300LB 600LB 
  26\"-48\" 900LB