Standard clearly says cellulosic electrode may be used up to x60. So you cannot weld x65 with cellulosic. But if satisfying the requirements through pqr , no problem to weld with it.
On Sun 21 Apr, 2019, 6:58 PM Kannayeram Gnanapandithan, <kgpandithan@gmail.com> wrote:
Cellulose has got 30 to 60 ppm of Hydrogen. It is better not to use in high strength steel and thickness--On Sun, 21 Apr 2019 5:44 pm Akhil, <AKHILSUNDAR.NBC@gmail.com> wrote:Hii--IN SAES W 12 , PARA 6.1.5 It is mentioned that cellulosic electrode may be used for all passes of grith weld of grades upto and including x60 and wall thickness less than or equal to 25 mm. Is this a mandatory requirement for doing pqr IN aramco project, if i want to use cellulosic electrode in all passes(E-7010 P1 for root & E-8010 P1 for all other passes ) of grith weld of x65 pipe is it possible ?
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