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Preheat & PWHT requirement for SA 387 Gr 11 Cl 2

Preheat & PWHT requirement for SA 387 Gr 11 Cl 2

Postby kristec.babu » Wed Oct 08, 2014 2:07 pm

Hi all,

Could anyone of you please provide me the preheat & PWHT requirements for the following,

Plate SA 387 Gr 11 Cl 2 with thickness 16 mm welded to plate SA 387 Gr 11 Cl 2 with thickness 16 mm,
Joint type: L Joint with 5 meters length (welded box beam fabrication),
Electrode being used: E 8018 - B2 (Diameter 3.15 & 4 mm),
Required fillet size: 16 mm.

Thanks,
Babu
kristec.babu
 
Posts: 2
Joined: Wed Oct 08, 2014 1:05 pm

Re: Preheat & PWHT requirement for SA 387 Gr 11 Cl 2

Postby pandithan » Fri Oct 10, 2014 3:20 am

What is the construction code?
Minimum preheat temperature is 120 degree C.
PWHT temperature as per ASME section I and VIII shall be 650 degree C and as per ASME B31.1 shall be 700-750 degree C.
pandithan
 
Posts: 2
Joined: Fri Jun 14, 2013 6:20 am

Re: Preheat & PWHT requirement for SA 387 Gr 11 Cl 2

Postby smart22ash » Wed Oct 15, 2014 10:53 am

Dear Babu ,
Please provide the construction code. As per the thickness PWHT is not required if it is general structural welding. You can use preheat just to remove the moisture.
smart22ash
 
Posts: 10
Joined: Fri Sep 06, 2013 6:52 am

Re: Preheat & PWHT requirement for SA 387 Gr 11 Cl 2

Postby kristec.babu » Thu Oct 16, 2014 7:43 am

Dear all,

Thanks for your support
kristec.babu
 
Posts: 2
Joined: Wed Oct 08, 2014 1:05 pm


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