Go ahead per 452.6-Table-IX-ASME...Thanks...MuneebFrom: Rejoy ThomasDate: 2019-08-13 22:35Subject: [MW:29950] Regarding Fillet weld WPS (for less than 5mm thk)--Dear all,Can I weld a socket/fillet joint, where the thickness of base metal (pipe to half coupling) is less than 5mm, by using a WPS which is qualified for 5-50mm thickness (GTAW+SMAW, P1 to P1), since there is no groove/base metal thickness involved in fillet welds!! Kindly refer the clause during reply. Your earliest response would be highly appreciated!!Thanks & RegardsRejoy Thomas
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Hi, You are correct, Minimum refers to the one cycle for which this part will expose until final work shop PWHT. hence mill test certificate shall include this. Max. SPWHT, refers to additional cycles of heat treatment that are reserved for future repairs during equipment lifetime. Again, these simulated no. Of cycles shall be specified in MTC. The idea is we need to make sure that steel mechanical properties are not compromised upon exposure to multiple repairs (i e 4 cycles in your case). One could say, if steel is subjected to 4 cycles and is ok, then it should by defacto be good for one cycle, yet, this is wrong assumption cause mechanical problems and microstructure of materials varies accordingly based on no. Of cycles for which material will expose. This is apparent in alloy steel and especially for impact test values as an example. In your case, this forged CS with properties before PWHT can be understood to be " as forged" condition (i.e. Wit...
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