weld standard for boiler pressure pipeline

Pipe Weld Joints in Plants and Pipelines | ASME B31 Piping ...

Consideration shall be made for NPS 2 socket welds in Class 900 and higher pressure ratings where high mechanical loads are present or vibration is present. 5.3 Fillet Welds Joining two lengths of pipe by means of a fillet weld is permitted only where cement lined pipe is being joined with coupling sleeves. 6.

Learn More