RE: [MW:27567] AWS D1.1- Measuring Preheat and Interpass Temperature location

Hi,

Working with European and/or ISO standards, the locations are stated in ISO 13916.

For thickness (t) less than 50 mm, interpass and preheat should be measured at a distance of 4 x t from the grove, however max. 50 mm from it.

 

For thickness (t) of more than 50 mm, you may end up with a distance of 75 mm

 

 

Yours sincerely

Kristian Lund Jepsen

 

M. Sc. Mech. Eng.

Senior Chief Consultant

Piping, Mecanical and Layout

 

From: materials-welding@googlegroups.com [mailto:materials-welding@googlegroups.com] On Behalf Of Nallavan
Sent: 25. marts 2018 04:34
To: Materials & Welding <materials-welding@googlegroups.com>
Subject: [MW:27564] AWS D1.1- Measuring Preheat and Interpass Temperature location

 

Dear Experts

Pls refer appl codes/standards and advise correct measuring location for Preheat and Inter-pass Temperature

Question
How far groove joint, preheat and inter-pass temperature shall be measured?
My understanding:-
1-Preheat Temperature shall be measured minimum 3"(75mm) from groove joint
2-Interpass Temperature shall be measures maximum 10mm from groove joint

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