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[MW:4919] Re-Certifying Material

By Materials & Welding
Dear All,
 
Pl.give me detailed procedure for re certifying material?
 
Example 1)ASTM to ASME
              2)AISI to ASME/ASTM
              3)ASME to ASME (Different edition)
 
Thanks,
With Best Regards,
Ramesh Barot

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