Dear Saqib,
Firstly do not use word "SAND" Blasting as most of the countries it is prohibited.
Next to your query, Yes before doing insulation some surface cleaning might be necessary. Depends on the customer specification and type of insulation and environment(site condition) one can make decision whether to carry out blasting or not.
Basically blasting is required for developing profile on the substrate (steel surface) and if the insulation method where you do not need profiled surface you can replace blasting with power tool cleaning (hand tool cleaning if area is not big).
It is always better to remove mill scale and any detrimental chemicals prior to carry out insulation to prevent oxidation / corrosion under the insulation.
C. K. Purohit
--- On Mon, 18/5/09, saqib gul <saqibgul@gmail.com> wrote:
From: saqib gul <saqibgul@gmail.com>
Subject: [MW:2197] Re: 2195] Re: Sand blasting
To: materials-welding@googlegroups.com
Date: Monday, 18 May, 2009, 11:13 AM
Before insulation cleaning of pipe lines by sand blasting is required or not? Mr. Singh: No? but why? Is there no need for cleaning the pipe lines even manually (by power brush etc.)?
On Mon, May 18, 2009 at 10:30 AM, Nachhattar Singh <n.singh@moodyint.com> wrote:
The straight answer to the question is NO
Nachhattar Singh
Director
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-----Original Message-----
From: materials-welding@googlegroups.com [mailto:materials-welding@googlegroups.com] On Behalf Of BR
Sent: Monday, May 18, 2009 10:58 AM
To: Materials & Welding
Subject: [MW:2195] Re: Sand blasting
Why you want to balst the insulation? be more clear on querry pl.?
On May 18, 8:54 am, Saqib <saqib...@gmail.com> wrote:
> Is it recommended to sand blast the Insulated pipe lines?
>
> Regards
> Saqib
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