Re: [MW:3963] Re: Usage of A106 gr. B pipe

I do endorse use of Sa333GR6 material for MDMT -29 deg C.What is the Impact value requirement for SA106GRB at -29 deg C? Normally for natural Gas applications Sa106GR B is impact tested at 0 deg C and required values are expected as 27J avg and 22J minimum at 0 deg C

Regards

Aarpee

On Mon, Jan 4, 2010 at 4:40 PM, Pisat, R. R(ahul) <Rahul.Pisat@akzonobel.com> wrote:

Hello Mr. Kannan,

Yes you need an impact test for A106 gr.B pipe , of 4'' XXS xch... thik. 17.12 mm at MDMT -29 deg.C.

As per ASME 31.3 , chart 323.2.2A and Table 323.2.2A,, the limiting thickness for MDMT -29 deg C is 12.7 mm for A106 gr. B pipe.

It is advisable to use A333 Gr. 6 material for your situation

Kind regards

Rahul Pisat

From: materials-welding@googlegroups.com [mailto:materials-welding@googlegroups.com] On Behalf Of rajagopal kannan
Sent: zondag 3 januari 2010 12:39
To: materials-welding@googlegroups.com
Subject: Re: [MW:3949] Re: Usage of A106 gr. B pipe

Dear Members,

Sorry for not mentioning the design pressure.

It is 5000 PSI. Is it required for the A 106 Gr. B material to undergo impact testing at -29 deg.c, if the MDMT is -29 deg.c and the thickness is 17.12mm Thick.

Thanks,

K.Rajagopal

On Sun, Jan 3, 2010 at 2:30 PM, israr <ahmedisrar.nm@gmail.com> wrote:

Yes U can use.

For more detail Ref Chart Tempreture Vs thickness Ref UCS 66 of asme
section VIII Div.1

Ragards
Israr Ahmed
KSA
+966530417332

On Jan 2, 9:10 am, rajagopal kannan <rajagopal.kan...@gmail.com>
wrote:
> Dear Members,
> Can you please advise whether A 106 Gr. B 4" sch. XXS pipe, be used for MDMT
> -29 Deg.C, as per B 31.3?
> Thanks and Regards,
> K.Rajagopal

--
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.

____________________________________________________________________________
This email has been scanned for Viruses and Spam. For more information
please contact your local Business Unit Information Security representative.
____________________________________________________________________________

--
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.

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...

Materials & Welding

Search This Blog