What is a stub end and why should it be used? 

Stub ends are buttweld fittings that can be used (in combination with a lap joint flange) alternatively to welding neck flanges to make flanged connections. The use of stub ends has two advantages: it can reduce the total cost of flanged joints for piping systems in high material grades (as the lap joint flange does not need to be of the same material of the pipe and the stub end but can be a lower grade); it speeds up the installation process, as the lap joint flange can be rotated to facilitate the alignment of the bolt holes. Stub ends are available in short and long pattern (ASA and MSS stub ends), in sizes up to 80 inches.

Type of Stub End

Long Stub End, Short Stub End, Lap Joint Stub End

Stub End Finish

• Beveled Ends

• Squared Ends

• Flanged Ends

• Grooved Ends

• Threaded Ends

  
  

Stub End Materials