Re: [MW:6376] DOLLYMIX WELDING

Dear N.V.K SARMA,

 

Could you please specify the clauses in AWS D1.1,ABS and DNV discussing 'DOLLYMIX'.

 

Regards,

 

Limesh

On Sun, Aug 8, 2010 at 8:16 AM, nistala sarma <nvksarma@gmail.com> wrote:

Dear Sir,

 

Good morning,

 

Yes it is correct in AWS D1.1 it was writen clearly. and mainly this kind of down hill position used in 6GR position for offshore pipe line structure, and even ABS, DNV also mentioned about this, mainly to controll the heat in put parameters on parent metal and as well as weld pool.

 

Thanks

On Fri, Aug 6, 2010 at 10:22 AM, limesh M <limesh78@gmail.com> wrote:

Dear All,

Is there any technical term called 'Dollymix' in pipeline welding?

I searched lot of literature but all efforts are in vein.I found that
many contractors WPS says 'Dollymix' progression !!!

Root pass uphill and remaining downhill called dollymix or root and
hot pass uphill and remaining downhill called dollymix? Is it a local
terminology or worldwide accepted one?

Regards,


Limesh

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Thanks & Regards
N.V.K.SARMA
Inspection Engineer
TUV Rheinland Middle East Fze
4A, 307, Dubai Airport Authority,
Po.Box No: 293542
Dubai,UAE
Mob: 00971 50 2512149,
0097150 1460340
e-mail:sarma.nistala@uae.tuv.com, nvksharma1@yahoo.com, nvksarma@eim.ae

 

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