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


By -

No comments:

Post a Comment

Subscribe to: Post Comments (Atom)

[MW:35346] Cast-iron welding

Any advice for cast iron welding Sent from Yahoo Mail for iPhone

  • Materails FAQs
    Q: What are equivalents for standard Q 235 B (and Q 235 A) for U-channels? ...
  • RE: [MW:5585] Buttering of weld joints
    Definition of buttering from ASME Section IX, QW/QB-492 Definitions:   Buttering:  the addition of material, by welding, on one or bot...
  • WELD AND WELDING SYMBOLS
    Section I. PRINT READING 3-1. GENERAL a. Drawings . Drawing or sketching is a universal language used to convey all necessary information to...