Saturday, March 23, 2013

Re: [MW:17202] API 1104 Wall thickness qualification for Auto-welding

Dear all,
1st u have to check that both process r automatic or semiautomatic

On Mar 18, 2013 11:14 AM, "M.A.Samdani" <m.a.samdani7@gmail.com> wrote:
Dear All,

Please guide me about interpretation of clause 12.5.2.4 of API 1104
regarding wall thickness of Automatic welding process which states "a
change in wall thickness beyond the range established in the procedure
specification constitutes an essential variable"
In my PQR sample thickness is 12.7 mm process is GMAW (STT)/FCAW.  If
I specify thickness range from 4.8 to 19.1 mm (group "b" of API) will
it be OK?
Please give your interpretation/thoughts of above clause what would be
my qualified thickness range with using above PQR thickness.

Thanks in advance
Ali Samdani

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