Regards
U.K.Verma
Ch. Manager (Mechanical)
IFFCO,Kalol Unit,India
Phone Dir: +91-079-23282341
Phone: +91-2764-223256/223258/223272
Fax: +91-79-23286021
Mob. : 9427051953
website : www.iffco.nic.in
NOTE: Protect environment. Please do not print, unless really needed.
"Chandra Bhusan
Tripathi" To: <ranasr@npcc.ae>
<cbt@rediffmail.c cc: <materials-welding@googlegroups.com>
om> Subject: Re: RE: [MW:3800] type coated Bolts carbon steel bolts ( A193 Gr. B7 ) fo
Stainless steel flanges
12/07/2009 05:46
PM
Please respond to
materials-welding
Hi Everyone,
SS bolts are very costly and not all coustomer advise to use in all lines,
It depend how critical is your line is otherwise, galvanise bolts with
insulation washer (kit) is a cheaper option instead of SS bolts.
Regards
Chandra Bhusan Tripathi
On Sun, 06 Dec 2009 15:25:03 +0530 wrote
>
Please inform bolts are required for onshore or offshore environment.
In offshore environments,
For SS flanges, even SS304 /316 ( due to crevice corrosion problems in
corrosive atmosphere ) Bolts are not preferred,
CS Galvanised bolts are any way not preferred due to galvanic corrosion
problems ( I think )
We use
a. UNS 32760 Bolts or
b. CS/LTCS + Fluropolymer coated bolts (see attachment)
Regards,
Shivanand R Ranasaria
From: desaid@toyoindia.com [mailto:desaid@toyoindia.com]
>Sent: Friday, December 04, 2009 3:18 PM
>To: materials-welding@googlegroups.com
>Cc: materials-welding@googlegroups.com
>Subject: Re: [MW:3795] type coated Bolts carbon steel bolts ( A193 Gr. B7
) fo Stainless steel flanges
>
>Many Licensor's specification specifies A193 B7 / 2H bolts for stainless
steel flamges.
>Use of galvanised bolt not seen at all for SS flanges.
>
>Also note, A193 B7/2H bolts are not CS bolts. These are alloy steel bolts.
>
>I did not understand the stage of your project . If youare planning to buy
new one than buy ss bolts or can go for B16 / 4 bolts also.
>
>
>Thanks & Regards,
>Dhwani Desai.
>TOYO - PLANNING & PIPING DEPT.
>91-22-2573 7681.
>
>
|---------------------+---------------------------------------------------|
|"Pisat, R. R(ahul)" | |
| | |
| | |
|12/04/2009 02:33 PM | To|
| | |
| | cc|
| | |
| | Subject|
| | [MW:3787] type coated Bolts carbon |
| Please respond to | steel bolts ( A193 Gr. B7 ) fo |
| >materials-welding@g| Stainless steel flanges |
| ooglegroups.com | |
| | |
| | |
| | |
| | |
| | |
| | |
| | |
|---------------------+---------------------------------------------------|
>
>
>Hello all,
Please recommend me the type of coated carbon steel bolts ( A193 Gr. B7 )
to use with stainless steel flanges.
>I am sure no to apply galvanised bolts with SS flanges.
Our construction team is worried about the rusted of the carbon steel bolts
to be apply with stainless steel flanges.
Please reply your recommendation for type of coating for bolts ?
Kind regards
Rahul
--
>To post to this group, send email to materials-welding@googlegroups.com
>To unsubscribe from this group, send email to
materials-welding-unsubscribe@googlegroups.com
>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.
--
>To post to this group, send email to materials-welding@googlegroups.com
>To unsubscribe from this group, send email to
materials-welding-unsubscribe@googlegroups.com
>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.
> ===================
>Please consider the environment before printing this email
>===================
>
>The information contained in this communication is intended solely for the
use of the individual or entity to whom it is addressed and others
authorized to receive it. It may contain confidential or legally privileged
information. If you are not the intended recipient you are hereby notified
that any disclosure, copying, distribution or taking any action in reliance
on the contents of this information is strictly prohibited and may be
unlawful. If you have received this communication in error, please notify
us immediately by responding to this email and then delete it from your
system. NPCC is neither liable for the proper and complete transmission of
the information contained in this communication nor for any delay in its
receipt.
>
--
>To post to this group, send email to materials-welding@googlegroups.com
>To unsubscribe from this group, send email to
materials-welding-unsubscribe@googlegroups.com
>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.
>
--
To post to this group, send email to materials-welding@googlegroups.com
To unsubscribe from this group, send email to
materials-welding-unsubscribe@googlegroups.com
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.
--
To post to this group, send email to materials-welding@googlegroups.com
To unsubscribe from this group, send email to materials-welding-unsubscribe@googlegroups.com
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.
No comments:
Post a Comment