S.A. 2.5 surface profile

[Jasim Ahmed]

Dear experts,

I badly need to know - is it possible to create S.A. 2.5 surface profile for joint wrapping without sand blasting?

[Lakshman]

HI, the word SA denotes for blast cleaning,
Further details of 2.5grade, achieving profile, for which application will all come at later on...

Lakshman kumar.B
Project manager.
9440031459

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From: Jasim Ahmed
Sent: ‎18-‎08-‎2015 12:34
To: Materials & Welding
Subject: [MW:23305] S.A. 2.5 surface profile

Dear experts,

I badly need to know - is it possible to create S.A. 2.5 surface profile for joint wrapping without sand blasting?

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[Alan Denney]

SA 2.5 is, by definition a grit blast finish – so the answer is no.

 

Alan Denney

AKD Materials Consulting Ltd

 

 

 

From: material...@googlegroups.com [mailto:material...@googlegroups.com] On Behalf Of Jasim Ahmed
Sent: 18 August 2015 08:00
To: Materials & Welding <material...@googlegroups.com>
Subject: [MW:23305] S.A. 2.5 surface profile

 

Dear experts,

 

I badly need to know - is it possible to create S.A. 2.5 surface profile for joint wrapping without sand blasting?

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[Bijay]

Do you want only without sand blasting or without any type of blasting. Now a days sand blasting is rarely used bcoz of its environmental issues. If you want you can blast with copper slag or iron grit.  But it is not possible without blasting. Sent from Yahoo Mail on Android From:"Jasim Ahmed" <jasim....@gmail.com> Date:Tue, 18 Aug, 2015 at 12:34 pm

Subject:[MW:23305] S.A. 2.5 surface profile

Dear experts, I badly need to know - is it possible to create S.A. 2.5 surface profile for joint wrapping without sand blasting?

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[Jayesh Panchal]

Dear Jasmin,

Alternatively we can do surface roughness by power brush.

You can try on sample surface & compare with comparator.

If it is found nearer  to sa 2.5, then get approval from client.

Jayesh Panchal

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[Kalim Sheikh]

Dear Jasim,

SA 2.5 is a degree of cleanniness as per  ISO 8501-1.This much of cleanniness is sometimes required for joint wrapping.Yes you can achieve SA2.5 through sand blasting but this is banned all across world.

Surface anchor profile is different thing which is measured in either microns or in mills and Not required for joint wrapping.

Regards,

Kalimullah

On Tuesday, August 18, 2015, Jasim Ahmed <jasim....@gmail.com> wrote:

Dear experts,

I badly need to know - is it possible to create S.A. 2.5 surface profile for joint wrapping without sand blasting?

--

[Kannayeram Gnanapandithan]

only by grit/abrasive blasting, u will get 2.5

THANKS & BEST REGARDS,

KG.PANDITHAN, IWE,  AWS-CWI, CSWIP 3.1,

CONSULTANT-WELDING & QUALITY

To view this discussion on the web visit https://groups.google.com/d/msgid/materials-welding/CAA%2BqLVs6Y8RETYQvfBtLTQcSqmh0v_akgchrKeG4S565iEPMQA%40mail.gmail.com.

[Madhan S]

You can also use bristle blaster machine to achieve SA 2.5 finish for weld joints, touch up and repair areas. But it is a slow process.

Check the attached document.

[Alan Denney]

Sa2.5 is a blast finish by definition and is achievable only by blasting with grit or other blast media. This equipment may claim to produce a finish equivalent to Sa2.5 but most clients will not accept it.

 

Alan Denney

AKD Materials Consulting Ltd

From: material...@googlegroups.com [mailto:material...@googlegroups.com] On Behalf Of Madhan S

Sent: 22 November 2015 04:51
To: Materials & Welding <material...@googlegroups.com>

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[Raghavendra Kiran]

Hello,

No. Without Sand/Grit blast it is not possible to achieve Sa 2.5 cleanliness grade. This grade is only obtained by blasting with various abrasives.

Thanks,

Kiran

On Tuesday, August 18, 2015 at 10:04:06 AM UTC+3, Jasim Ahmed wrote: