Re: [MW:832] Re:Thanx & STT welding procedure

[Fly Yalung]

Dear Sir S. N. Dave,

Thank yoy for giving us the information. I have another query this regarding STT welding process, does this effecient to use? Does S. Aramco will require another procedure to be approve? If it will require can you help me to gother information to make a procedure to STT welding process.

Thank you very much for the cooperation.

 

Best Regards,

Fly L. Yalung - Material Engineer

M. A. Al-Kawari Est.

Ph: 03-5721079

fax: 03-5721471

fly_ma_...@yahoo.com

 

----- Original Message ----
From: shailesh dave <snd...@yahoo.com>
To: material...@googlegroups.com
Sent: Sunday, June 8, 2008 6:23:06 AM
Subject: [MW:832] Re: STI Welding

Do you mean STIR WELDING?

 

REGARDS,

 

S.N.DAVE

 

QA/QC MANAGER

 

TATA PROJECTS LIMITED

 

IWPP-III, SHAUIABAH, SAUDI ARABIA

fly_ma_...@yahoo.com wrote:

Whom it may concern;
Has anyone had encountered STI welding?

[Bathula Raghuram (Mumbai - PIPING)]

This is the best example if you are not taking care while posting your query, and time to give more detail and approipriate subject line
STI has been asumed as Friction STIR welding, where you want the details about STT, please take care while posting.

Good Luck!

[Quality]

The STT (Surface Tension Transfer) welding technique is relatively newer process & at site/ field level people yet to master. It specialise in its ability to provide smooth even rippled weld beads, free of spatter & consistently good fusion. It is ideal for sheet metal applications & successfully applied for root pass welding of open root joints. It has dual benefit of increasing the productivity with overall weld quality.

 

If are going for the first time, my advice is to get somebody who had previous experience with similar equipment (operator /welder) & good equipment vendor who can provide good technical support for all your initial problems.

 

Please find herewith the few literature with respect to STT.

 

To my knowledge STT is approved technique in Saudi Aramco & used in few pipeline projects.

 

Regards,

 

Sanjeevan, GPS

----- Original Message -----

From: Fly Yalung

To: material...@googlegroups.com

Sent: Tuesday, June 10, 2008 8:30 AM

Subject: [MW:837] Re: Thanx & STT welding procedure

[gajjalla surya prakash]

please find the attached qualified procedure for STT welding ,STT
welding is sucessfully used in reliance petroleum jamnagar .

surya prakash gajjall

ASSOCIATED ENGINEERING SERVICES
www.aesinspections.net.

[Pathmanan Ganesan]

We have used STT welding in Jamnagar phase-I refinery at Fabrication
shops,to facilitate SAW machine welding. But we have faced root porosity
problems severely. It was difficult to avoid due to heavy wind from the
downstream side of the fabrication shops and air from the inside of
piping.

We have shifted to E6010/GTAW root during the next phases of expansion
and STT machines were not used significantly.

STT is a good process provided your welding environment could be
controlled.

Regards,

P.M.Ganesan

Site QC Manager

QA&C Department

Kharafi National

P.O. Box: 24081, Safat - 13101, Kuwait

Mob: +965.7202358

Email: p.ga...@kharafinational.com

Website: www.kharafinational.com