Sunday, October 28, 2012

[MW:15791] Tensile strength and Preheating



Dear Experts,

I need some information about preheating. As per our client specification, if the tensile strength value above 450mpa,100 C preheating require for any thickness. Is it really essential ?

Some specifications:  Material:  SA 105( asper ASME IX-Min.UTS Vaule -485mpa) + SA106 B, Size:OD:33.4, Thk = 6.35 mm, As per test certificate pipe UTS value is 515mpa.

Our client suggestion is to do preheating for all joints.

 
Thanks & Regards,
Kumar


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