Skip to main content

[MW:1141] [piping_valves] Piping Materials for Hot water Tracings.

Bhattacharyya_Bibekananda@ke0.grp.kaneka.co.jp
Sent by: piping_valves@yahoogroups.com

18/09/2008 09:08

Please respond to
piping_valves@yahoogroups.com

To
piping_valves@yahoogroups.com
cc
Subject
Re: [piping_valves] Piping Materials for Hot water Tracings.





For glycol (concentration variation, as applicable), LTCS / SS304 is
perfectly suited.
However in Pharma Plant, SS316 is also used.
Regards,
Bhatta.

kannan.sundaram@l
inde-le.com
Sent by: To
piping_valves@yah
materials-welding@googlegroups.com,
oogroups.com
piping_valves@yahoogroups.com
cc

09/18/2008 03:59 Subject
PM [piping_valves] Piping Materials
for Hot water Tracings.

Please respond to
piping_valves@yah
oogroups.com



The conservative material prescription for heat tracing is carbon steel. But
however you have take into account where the plant is installed, like cold
countries where the winter temp. drops quit low. This is independent of the design
temp. of the service. So refer the contract for the Min. metal design temp. for
piping, because it does vary between equipments design and piping design.

With regards,
Kannan





"Bagesh Kumar" <
bagesh.kmr@gmail.com>
Sent by:
materials-welding@googlegroups.com


18/09/2008 05:37


Please respond to

materials-welding@googlegroups.com





To
<
materials-welding@googlegroups.com>
cc

Subject
[MW:1132] Piping Materials for Hot
water Tracings.








Dear All,
The Fluid for Industrial Heating Water is a mixture of Glycol 56 % and Water 44 %,


PMC has suggested use of Low Temperature Carbon Steel Materials,


Please Throw some light on Proper Piping Material for the said Fluid, The Design
Temperature is 130 Deg C Max and Pressure is 16 Kg/Cm2.
I have used previously SS 316, For MEG Service, Services in a petrochemical plant.


Kumar Bagesh


__._,_.___
Messages in this topic (2) Reply (via web post) | Start a new topic
Messages

Change settings via the Web (Yahoo! ID required)
Change settings via email:
Switch delivery to Daily Digest | Switch format to Traditional
Visit Your Group | Yahoo! Groups Terms of Use | Unsubscribe
Recent Activity
 1
New Members
Visit Your Group
Get in Shape

on Yahoo! Groups

Find a buddy

and lose weight.

Yahoo! Groups

Real Food Group

Share recipes

and favorite meals.

Yahoo! Groups

Come check out

featured healthy living

groups on Yahoo!

.

__,_._,___
--~--~---------~--~----~------------~-------~--~----~
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.
-~----------~----~----~----~------~----~------~--~---

Comments

Popular posts from this blog

Re: [MW:34105] SA266 GR4N 4 Cycle SPWHT

Hi,  You are correct, Minimum refers to the one cycle for which this part will expose until final work shop PWHT. hence mill test certificate shall include this.  Max. SPWHT, refers to additional cycles of heat treatment that are reserved for future repairs during equipment lifetime.  Again, these simulated no. Of cycles shall be specified in MTC.  The idea is we need to make sure that steel mechanical properties are not compromised upon exposure to multiple repairs (i e 4 cycles in your case).  One could say, if steel is subjected to 4 cycles and is ok, then it should by defacto be good for one cycle, yet, this is wrong assumption cause mechanical problems and microstructure of materials varies accordingly based on no. Of cycles for which material will expose. This is apparent in alloy steel and especially for impact test values as an example.  In your case, this forged CS with properties before PWHT can be understood to be " as forged" condition (i.e. Wit...

Materails FAQs

Q: What are equivalents for standard Q 235 B (and Q 235 A) for U-channels? (asked by: boris.vielhaber@vait.com) A: DIN Nr. = 2393 T.2, 2394 T.2, EN 10025 W. Nr. DIN 17007 = 1.0038 Design DIN 17006 = RSt 37-2, S235JRG2 (Fe 360 B) Q: What is St DIN 2391 BK material? (asked by: dmcandrews@automaticstamp.com) A: Precision steel tubes, cold-finished/hard. Q: What is C.D.W. Boiler Tube? (asked by: montydude123@yahoo.com) A: Cold Drawn Welded Boiler Tube. Q: WHAT IS W.Nr. 1.4301? PLS TELL US IN EASY LANGUAGUE (asked...

Heat tint (temper) colours on stainless steel surfaces heated in air // Heat tint

Introduction The colour formed when stainless steel is heated, either in a furnace application or in the heat affected zone of welds, is dependent on several factors that are related to the oxidation resistance of the steel. The heat tint or temper colour formed is caused by the progressive thickening of the surface oxide layer and so, as temperature is increased, the colours change.   Oxidation resistance of stainless steels However, there are several factors that affect the degree of colour change and so there is no a single table of colour and temperature that represents all cases. The colours formed can only be used as an indication of the temperature to which the steel has been heated. Factors affecting the heat tint colours formed Steel composition The chromium content is the most important single factor affecting oxidation resistance. The higher the chromium, the more heat resistant the steel and so the development of the heat tint colou...