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Steel Structures in very Cold Climates

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Dear B. Davidson:

What is the method you refer to for modifying A500 sections?  Is it the heat-treatment as described for Grade D in the ASTM specification?

Thank you,

Rafael Sabelli 

-----Original Message-----

....HSS Sections to ASTM A500 (modified for impacts) or CSA G40.21, 50T and 50A...

B.Davison, P.Eng.
RND Engineering Ltd.
Edmonton, Alberta=20