Hi Dhwani,
Before accepting any proposal from vendor, you shall get the concurrence from your engineering department. Here a question is that by isothermal annealing, can vendor give the same mechanical properties as normalising and tempering?
You can verify the older TC of this vendor of the same spec, grade and heat treatment and can verify the achieved mechanical properites.
With Regards,
Rutvik
Sr.Surveyor
TATA Projects Ltd.
--- On Wed, 26/5/10, desaid@toyoindia.com <desaid@toyoindia.com> wrote:
From: desaid@toyoindia.com <desaid@toyoindia.com>
Subject: [MW:5250] <Security Level 2>Isothermal Annealing in place of normalising & Temperig
To: materials-welding@googlegroups.com
Date: Wednesday, 26 May, 2010, 8:50 AM
Dear All, One of the vendors is giving Isothermal annealed pipes for pipe material A335 P22, P5 & P9 against our requisition requirement of Normalizing & Tempering. As per ASTM the same is acceptable. However, i will like to know the difference in the end product because of this different heat treatment. Also; if some one can comment on the acceptance of the isothermal annealed pipes in place of normalised & tempered pipes. Thanks & Regards,
Dhwani Desai
Planning & Piping Dept.
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http://materials-welding.blogspot.com/ The views expressed/exchnaged in this group are members personel views and meant for educational purposes only, Users must take their own decisions w.r.t. applicable code/standard/contract documents.
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