pwht of joint pwht of joint swatik patel (Mechanical) (OP) 3 Jan 17 06:09 i have a column in which joint configuration is groove of 36 mm and fillet of size 10 mm is overlapping on it. should i go for pwht? RE: pwht of joint metengr (Materials) 3 Jan 17 12:53 First, what is the column material? Carbon steel? What code of structural steel construction are you following? Have you qualified a WPS for this weld joint configuration and base material? RE: pwht of joint swatik patel (Mechanical) (OP) 4 Jan 17 15:32 My column is of material SA516 GR. 70 ,and construction code is ASME SEC. 8 DIV 1 . i have approved wps also. Concern is my DCBB fillet weld is fouling on circ-seam of column. Circ-seam have thikness 36 and fillet have thikness 10mm RE: pwht of joint racookpe1978 (Nuclear) 4 Jan 17 16:01 IF you have a weld process specification, then your WPS tells you the requirements for PWHT. Follow it. Asking the internet for a PWHT requirement is not prudent. RE: pwht of joint metengr (Materials) 4 Jan 17 16:09 Follow the rules of UCS-56 in ASME Section VIII, Div 1 for PWHT guidance. RE: pwht of joint swatik patel (Mechanical) (OP) 5 Jan 17 07:46 Not specified in code. RE: pwht of joint r6155 (Mechanical) 5 Jan 17 09:30 swatik. Read again UCS-56 Regards r6155 RE: pwht of joint SnTMan (Mechanical) 5 Jan 17 13:04 swatik patel, I'd venture to say nobody knows exactly what you are talking about, but if you have a circ seam in a cylinder that has been previously welded and heat treated (or not) per Code, then to later add a 10 mm filet on top of it is not likely to need PWHT. Regards, Mike The problem with sloppy work is that the supply FAR EXCEEDS the demand RE: pwht of joint r6155 (Mechanical) 5 Jan 17 13:37 swatik. In your case(36mm) preheat is required at a minimum of 95ºC during welding. See Table UCS-56-1 in full Regards r6155 RE: pwht of joint david339933 (Industrial) 5 Jan 17 14:31 Also see UW-40(f).