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Lap Joint Flanges

Lap Joint Flanges must be used with their associated stub end. The stub is welded to the pipe and the Lap Joint then works as a backing ring. The main advantage of this type of flange is that the bolt holes can be aligned with the matching flange after the welds have been completed. A Lap Joint Flange is not suitable for areas with high external or dynamic loads. A Swivel Ring Flange should be used for this type of application.  

  • Size: 1/2”-60”
  • Design Standard: ANSI, JIS, DIN, BS
  • Material: Carbon Steel (ASTM A105, Q23520Mn)
                    Stainless Steel (ASTM A182 F304/304L, F316/316L,F321)
                    Alloy Steel (ASTM A182F1, F2, F5/A, F6/A, F9, F11, F12,F22, F91)
  • Normal Pressure: CLASS 150, CLASS 300, CLASS 600, CLASS 900,CLASS 1500, CLASS 2500, CLASS 3000
  • Face Type: F.F., R.F., R.T.J.,M.F.,T.G.

Flange

Flange Overview
Material of Flange
Technology Information
   Drawing of ANSI B16.5
   Drawing of ANSI B16.36
   Drawing of BS
   Drawing of DIN
   Drawing of JIS
Forged Flange
   welding neck flanges
    Slip-On Flanges
    Lap Joint Flanges
    Threaded Flanges
    Blind Flanges
    Orifice Flanges
Steel plate flanges
   Drawing of KS/JIS

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