Thursday, August 11, 2011

[MW:12187] furnace heat treatment for piping spool

Dear all,


prefabricated cs piping spools pwht carrying by furnace method, instead to do joint total spool they doing.

there is any technical problems on that,  example : base metal may manufactured by normalizing method or other different method with high  temperatures 
so there is a chance to loss mechanical properties 

pls clarify with any supporting doc.


thank you,
vijay

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