Wetting agent for Hydrostatic test

[rutvik dixit]

Hi all,
My client wants to use wetting agent with water for hydrostatic test.

I understand that wetting agent will reduce the surface tension of the water and increases the wettability of water..

Can anybody give me the name of wetting agents. Will detergent powder work as wetting agent? How wettng agent can be used in hydrostatic test?

With Regards,
Rutvik
Sr.Surveyor
TATA Projects Ltd

[nandakumar pandit]

Dear Rutvik,

Detergent will lower the surface tension but has a tendency of foaming. Try to get low foaming wetting agent from manufacturers of surfactants viz. Kusa Chemicals Ltd. or Sunshield Chemicals Ltd. Both have offices in Mumbai.

Regards
nspandit

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[george....@gr.bureauveritas.com]

I do not know any trade names in any case must be halogen free

[Mehmood Javed]

Dear All

Can we use GTAW only for complete welding joint in following  cases.

 

1- Pipe,  API 5L Gr B, 3" dia, Wall Thickness 10 mm

 

2- Pipe,  316-L (Urea Grade) , 3" dia, Wall Thickness 10 mm

 

 

Regards,

 

Asim

 

[Potter, Richard]

The requirement, as far as code goes would be to insure your process weld procedure and operator are qualified for the thickness of deposited weld metal.

The only down side to me would be extended time to produce the weld using a slow process and heat input.

 

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[rutvik dixit]

Thanks Nand,   could you give me the contact details of these mfr.   could you describe how to use wetting agent. Should I spill/spray to each pipe ID before hydro test/ directly into the water tank?   With Regards, Rutvik --- On Thu, 5/8/10, nandakumar pandit <pand...@gmail.com> wrote:

[Welder's Helper]

No code banned full GTAW operation on any metal and it is one of the best process in the world.We prefered SMAW due to economics.

--

Welder's Helper

 

Never bend my head infront of anyone other than GOD the almighty.

--

[Eng/ Mostafa Kamel Hussein]

Full GTAW or any other welding process doesn't submit to any code, otherwise the client specification only can order you to do specified process so select the welding process depends on some factors as:

1- Type of material

2- Thickness of material and diameter ( Pipe Case)

3- Welding Position

4- Process Availability 

5- Process Cost

6- Production or site conditions

Regards,

SaSa 

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From: Welder's Helper <vettaikk...@gmail.com>
To: material...@googlegroups.com
Sent: Wed, August 11, 2010 12:29:06 PM
Subject: Re: [MW:6422] GTAW for complete welding joint

[Manoharan Kalimuthu]

Asim,

              If you have the WPS covering the below thickness you can use..

Mano

2010/8/5 Mehmood Javed <mehmoo...@fatima-group.com>

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[george....@gr.bureauveritas.com]

I would add criticality of the weld

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  From: Eng/ Mostafa Kamel Hussein [mkh...@yahoo.com]
  Sent: 12/08/2010 00:36 MST
  To: material...@googlegroups.com
  Subject: Re: [MW:6457] GTAW for complete welding joint

Full GTAW or any other welding process doesn't submit to any code, otherwise the client specification only can order you to do specified process so select the welding process depends on some factors as:

1- Type of material

2- Thickness of material and diameter ( Pipe Case)

3- Welding Position

4- Process Availability 

5- Process Cost

6- Production or site conditions

Regards,

SaSa 

---

From: Welder's Helper <vettaikk...@gmail.com>
To: material...@googlegroups.com
Sent: Wed, August 11, 2010 12:29:06 PM
Subject: Re: [MW:6422] GTAW for complete welding joint

No code banned full GTAW operation on any metal and it is one of the best process in the world.We prefered SMAW due to economics.

--

Welder's Helper

 

Never bend my head infront of anyone other than GOD the almighty.

On Thu, Aug 5, 2010 at 7:14 PM, Mehmood Javed <mehmoo...@fatima-group.com> wrote:

Dear All

Can we use GTAW only for complete welding joint in following  cases.

 

1- Pipe,  API 5L Gr B, 3" dia, Wall Thickness 10 mm

 

2- Pipe,  316-L (Urea Grade) , 3" dia, Wall Thickness 10 mm

 

 

Regards,

 

Asim

 

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The views expressed/exchnaged in this group are members personel views and meant for educational purposes only, Users must take their own decisions w.r.t. applicable code/standard/contract documents.

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To post to this group, send email to material...@googlegroups.com
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For more options, visit this group's bolg at http://materials-welding.blogspot.com/
The views expressed/exchnaged in this group are members personel views and meant for educational purposes only, Users must take their own decisions w.r.t. applicable code/standard/contract documents.

[manoj john]

Yes, You can use if you have a qualified GTAW procedure for this thickness.  The only thing is weld deposit is very less and time consuming and cost also will be more when compaired to other process so this process is not economical. 

 

Regards.

Manoj

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