Re: Coated Pipe

Normally these "Heat shrink sleeves" are used for joining ends of 2 FBE or PE coated pipes. Around 100 to 150mm of coated pipes is left bare so that welding can be done. After welding of pipes at site, heat shrink sleeves are wrapped around the weld to cover the "bare portion".

Coated pipes are normally holiday tested for detection of any discontnuity or pinholes. In that case, pipe is locally blasted, heated upto certain temperature (as recommended by sleeve manufacturer), primer is applied & finally sleeve is wrapped around.

Raychem are one of the specialists in this line of products.

Regards.
----- Original Message -----
From: "Gambhir Sanjay" <sanjay.gambhir@siemens.com> To: <PipingDesign@yahoogroups.com>
Cc: <shivapuji@mis.co.ae>
Sent: Saturday, July 27, 2002 1:35 PM
Subject: RE: [PipingDesign] Coated Pipe

> Can your explain "shrink Sleeves" a bit more............
>
> Regards
> Dr. Sanjay Gambhir
> Siemens Power Engineering Pvt. Ltd.
> Tel:+91(124) 6347990/991/992/.../99
> Extn: 2313
> Fax:+91(124) 6347512
> Email: Sanjay.Gambhir@siemens.com
>
>
> -----Original Message-----
> From: shreedhar [mailto:shivapuji@mis.co.ae]
> Sent: 2002-07-27 15:02
> To: PipingDesign@yahoogroups.com
> Subject: Re: [PipingDesign] Coated Pipe
>
>
> In-situ repairing is done by using "Shrink Sleeves" which are manufactured
> by parties like Raychem ... etc.
>
> Regards,
> Shreedhar.
> MIS, Sharjah.
>
> ----- Original Message -----
> From: "andoks_lichon" <andoks_lichon@yahoo.com.au>
> To: <PipingDesign@yahoogroups.com>
> Sent: Friday, July 26, 2002 11:16 AM
> Subject: [PipingDesign] Coated Pipe
>
>
>
>
> Coated Pipe
> After WWII, the best available corrosion control coating for piping
> was coal tar enamel. Today two premium (top-of-the-lne) coating
> system dominate the market - multiplayer FBE and 3 layer polyolefin
> coating.
>
> For buried piping, will the above type of coating has any effect in
> the performance of CP (use in conjuction of .our spec has use the
> term "as an engineered part of CP systems").
> Which of the 2 is the best of the best
> How do we repair the coating at the field (normally factory applied)
> if its possible.
>
>
>
>
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Received on Sat Jul 27 09:55:00 2002