What is the permissible Ovality in Pipe to Pipe or Pipe to Elbow for welding ?, what type of welding can it be compensate it ? and reference of the ASME std to follow

[Durgesh]

What is the permissible Ovality in Pipe to Pipe or Pipe to Elbow for welding ?, what type of welding can it be compensate it ? and reference of the ASME std to follow.

e-g) i got the ovality of 5 mm radial between O.D of pipe and elbow of 500NB (OD 508mm).

Please suggest so i can convince my customer. 

[José Juan Jiménez Alejandro]

La ovalidad en Recipientes a Presión es 1%, bajo ASME VIII Div. 1; en dobleces de tubería es un 8% de acuerdo al PFI Standard ES-24: PIPE BENDING METHODS, TOLERANCES, PROCESS AND MATERIAL
REQUIREMENTS, en codos no lo se, pero en tubería generalmente es el 1%.

Ovality in Pressure Vessels is 1%, under ASME VIII Div. 1; in pipe bends it is 8% according to PFI Standard ES-24: PIPE BENDING METHODS, TOLERANCES, PROCESS AND MATERIAL
REQUIREMENTS, in elbows I don't know, but in pipe it is usually 1%.

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Ing. José Juan Jiménez Alejandro

Independent Consultant in Parts

and Pressure Equipment

SSI-TPI

Móvil +52 1 812 352 4606

Skype: jjjimeneza