ASME B31.3_2018- Table 331.1.1-PHWT minimumn Holding Time for base material thk-75mm

[Anban]

Dear Experts

Need your guidance in understanding  PWHT minimum  Holding Time base material thk.-65 ~ 75mm

P-No. 1, Group Nos. 1–3

Minimum Holding Time at Temperature for Control Thickness [Note (2)]

-Up to 50 mm (2 in.)-1 h/25 mm (1 hr/in.);15 min min.

-Over 50 mm (2 in.)-2 hr plus 15 min for each additional 25 mm (in.)

Best Regards

Ganesan

[Chandru Sekar]

Why they segregated as group and in which basis ?

--
https://materials-welding.blogspot.com/
https://www.linkedin.com/groups/122787
---
You received this message because you are subscribed to the Google Groups "Materials & Welding" group.
To unsubscribe from this group and stop receiving emails from it, send an email to materials-weld...@googlegroups.com.
To view this discussion on the web visit https://groups.google.com/d/msgid/materials-welding/b538da9f-4e78-4b7c-85c3-7679328ed9bdn%40googlegroups.com.

[Kannayeram Gnanapandithan]

based on toughness requirement

THANKS & BEST REGARDS,

KG.PANDITHAN, BE, IWE,  CSWIP 3.1,

ISO 9712 Level 2 in VT,

ASNT-Level II in PT,MT,RT & UT,

LA ISO 9001-2015,

International Welding Engineer. 

CONSULTANT-WELDING & QUALITY

Mobile no: +919940739349

To view this discussion on the web visit https://groups.google.com/d/msgid/materials-welding/CAGWOcnqMNXcWFH-bUvTt7GM1yoJJC6o5fUR_aKy3aWTuQs5fPQ%40mail.gmail.com.

[Raja Varman]

2 hours for 50 mm additional 15 minutes for 15~20 mm.

To view this discussion on the web visit https://groups.google.com/d/msgid/materials-welding/CAJzm4ePRn47pM%3DPoLYZDZnLE7eZPXYuDS%2B-AcVjtQnM44uotJQ%40mail.gmail.com.