Hello,
In ASME B31.3 edidtion Table 331.1.1 Postweld Heat Treament for P.No.1, Group Nos. 1-3: Holding Temperature Range, 595 to 650 Deg. C; Minimum Holding Time at Temperature for Control Thickness up to 50mm is 1h/25mm.... My interpretation to this is that All P.No. 1, Group Nos. 1-3 are...
Hello,
ASME B31.3 2014 edition,Table 331.1.1 PWHT, P-NO.1 , group nos. 1-3:
Holding temp. range 595 to 650deg C: Min. holding time at Temperature for control thickness up to 50mm is 1 hr/25mm and 2 hr plus min for each additional 25 mm over 50 mm.
Thickness range is not mention,it says only...
