What is a socket weld flange(SW flange)?

Socket weld flange(sw flange),a popular type of pipe flanges,was initially developed for use on small-sized high- pressure piping.The fabrication of socket weld flange is similar to slip on flange.However,the internal pocket of a socket weld flange allows for a smooth bore and better fluid flow.When provided with an internal weld,the static strength of this flange is equal to slip-on flange,but the fatigue strength is 50% greater than double welding slip-on flanges.

American standard socket weld flanges finished in Haihao Group

Smooth bore conditions in such a flange can easily be attained without having to bevel the flange face and,after welding,to reface the socket weld flange as would be required with slip-on flanges.For this reason,the internally welded flange is popular in chemical process piping.

Key features for socket weld flange:

• The recess on the inside diameter of the socket weld flange allows for a good fit of the pipe allowing for a smooth flow of liquid.
• Socket welding flanges work well for smaller sizes and higher pressure temperature conditions.
• They are similar to slip-on flanges,but must specify the schedule of the pipe where they will be used for with socket welds.

Slip on flanges finished in Haihao Group

Hebei Haihao Group,as one of the earliest flange manufacture,has strong experience in flange production and inspection and a complete set of equipments,including advanced cutting,forging,machining,drilling machines and professional testing and inspection instrument.Obtaining from the clients and end user all over the world,we have clients such as National Chemical Engineering Corporation,CNPC and SINOPEC and so on.

For any flanges you need,please feel free to contact us email:sales@haihaogroup.com