hello darshan
its Ajay here
your thickness limit will be 7.11 to 14.22
this is as per ASME sec IX......bcouse for LTCS u have to do the impact test............in dis case ur limit will me in lower side is 7.11 but limited to 2T in higher side........
jus go thorugh ASME sec IX chapter 4 clause no QW-403.6
QW-403.6
The minimum base metal thickness qualifiedis the thickness of the test coupon
T or 5⁄8 in. (16 mm),whichever is less. However, where
T is less than 1⁄4 in.(6 mm), the minimum thickness qualified is
1⁄2T. This variabledoes not apply when a WPS is qualified with a PWHT
above the upper transformation temperature or when an
austenitic or P-No. 10H material is solution annealed after
welding.
On Thu, Apr 19, 2012 at 11:12 AM, Darshan Maheshwari <darshan.maheshwari@yahoo.com> wrote:
--Can any body suggest what thickness range is applied for qualifying a WPS (for thickness 7.11mm) for LTCS piping material. Please provide reference also.Regards,Darshan Maheshwari.
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