Sunday, April 14, 2013

Re: [MW:17379] PRE HEAT PROCEDURE OF E 7016 -1 ELECTRODE

Dear,
        Do you have Approved consumable Control procedure from your client? then, if you follow the Preheat method as per procedure then no need to worry..check the cause problem,,you will find any way.


On Sat, Apr 13, 2013 at 8:06 AM, jiji lal <jijilalkm@gmail.com> wrote:
SIR,

I'm engaged with welding of API 5LX 80  grade pipeline for regassified LNG transmission . We do  Tie-in method using SMAW+FCAW.
For root pass welding we use E7016-1 electrode after pre heating 250 degree for 2 hr in mother oven and maintain 100 degree in holding oven . during RT interpretation severe hollow bead and porosity observed in root .hence PMC sent almost all joints for repair.now it becomes a serious issue and I think ,the pre heat method was not proper. kindly advice me in this issue.

Mr.Jijilal k .m
qa/qc dept. tecpro ltd.
kochi.

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With Best & Regards

N.Srinivas,
Welding Inspector,
Al Suwaiket Industrial Support Services,
0561198050,0537812787
Al-Khobar.

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[MW:34820] RE: 34813] Clarification in Rate of heating and cooling.

Hello,   Please see the response below.   Regards.   P. Goswami, P. Eng, IWE.   From: materials-welding@googlegroups.com <materials-weld...