QW-288 Tube to tube sheet Qualification Essential Variables
-- QW-403 Base Metal
QW-403.31 For tubes of specified wall thickness of 0.100 in. (2.5 mm) or less, a change in tube wall thickness to increase it to more than 2T or to decrease it to less than
1/ 2 T. For tubes of specified wall thickness greater than 0.100 in. (2.5 mm), only one qualification test is required.
Understood.............
Please clarify tube OD limits
QW-403.33 A change in the specified tube wall thickness or diameter greater than 10% for all diameters and wall thicknesses.
Regards,
Pravin Nimbalkar
https://materials-welding.blogspot.com/
https://www.linkedin.com/groups/122787
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