How to select welding electrodes

This photo from weldingandndt.com
Do you have comments in this photos?

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@bien I think you should add hastag to related keyword. And then we can search out more results.

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Thanks @dinhhoan05,
We attached tag at topic title, next topic will add hastag.

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My opinion :

  • Match the mechanical properties and chemical composittion of the base metal
  • Match to power supply - AC , DCEn, DCEP
  • Match to postition of the weld.
  • Observe joint design: deep or light penetration electrode suitable fit-up and material thickness.
  • Observe service conditions : temperature, corrosive, impact test, low hydrogen…
  • Consider welding cost.
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