Saturday, July 31, 2010

[MW:6223] NACE recommendation on Bolts & Nuts Material

Dear All,

Can anybody tell me why NACE Recommends Low Hardness Materials ( ASTM
A193B7M and A194 2HM) for Bots and Nuts Since Bolts & Nuts are not at
all coming in contact with the Corrosive Fluid.

Thanks & Regards

Vineeth Thomas
Piping Engineer

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Re: [MW:6221] PWHT of Bigger diameter & Long vessels

Thanks for the inputs.
 
We don't want internal firing to be used. All our suppliers agreed for doing PWHT in enclosed furnace before order.
 
Now they have problems in finding furnces for doing PWHT. We are trying with Cooperheat for their solution.
 
BR
Suresh

On Sat, Jul 31, 2010 at 9:58 PM, Chaitanya Purohit <chaitanya_purohit@yahoo.co.in> wrote:
Its all depends ;
- Experience of person / company responsible (carrying out) PWHT in modular furnace
- Construction of modular furnace (proper and enough insulation to prevent heat loss
- how accurately one can build furnace without any openings / leakage (except opening with damper to control the air flow / exhaust)
- Nos of burner and burner location
- Circulation of hot air (again no of burner and location and blower capacity/position is important)
- Placement and Nos of thermocouple (thin / thick parts will have variation of 20 -80 deg C difference

If all the care taken for the above points then you can considered modular furnace as good as permanent and go ahead without any hesitation.

-  Thickness of part vessel to be heat treated (as the curnace efficiency will not be same as permanent furnace, time to penetrate thickness may take more time (1-1/2 hrs for 30 -50 mm thick material
 

In my opinion, internal firing would be better option with better controls if not much internals (which may hamper the uniform heating).   


Regards.
On 30 July 2010 15:48, suresh venkat <atozsuresh@gmail.com> wrote:
Dear all,
 
we have several equipments of diameter 5mts & above & length 30 mtrs & above. Our specs calls for PWHT in an enclosed furnace.
 
some of our fabricators expressed inability due to furnace size restrictions& informed us that use of Temporary Modular furnaces will pose risk to Quality of final product.
 
I need your advice on the following
 
1. Is doing PWHT in modular furnaces will create any problems to the equipment (in terms of quality)
2. can the temperature be properly controlled
3. Pwht can be performed properly without overheating or Under heating.
 
thanks
 
Suresh

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--
C. K. Purohit
Eng-Tech Weld1
Sr Welding Inspector

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[MW:6224] ASME PQR-WPS-Impact testing

Guys,
Could anyone inthis group clarify whether is it required to do Impact testing for welding repair procedure qualification.Normally we do Tensile,bend,.
Here for API 5L PSL1 pipes we have already WPS/PQR with out Impact,so is it acceptable as per ASME SEC.IX

REGARDS,
KK

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[MW:6222] minimum butt weld joint

Dear all;

 

I had a question regarding minimum butt weld joint?

 

Is there any code mentioning that NPS 2 & above shall be butt weld joints & less than 2” socket weld?

 

Please advice?

 

Regards

Majdi

[MW:6225] Lifting Inspector Training in India

Good Day ,
could you please give the information regarding lifting inspector training  in India

regards

Santosh

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Re: [MW:6226] vacuum chamber

dear sir,plz elaborate ur requirements for 10-6 mbar.

On 7/31/10, Devang Patel <devangp@inoxindia.com> wrote:
> Does anybody have a technical information about Vacuum Chamber(1x10-6 mbar)?
>
> Regards,
> Devang Patel | Sr. Manager Engineering
> Inox India Ltd. | 4th Floor, ABS Tower, Old Padra Road, Vadodara. Guj.
> India.
> Voice: + 91-265-3056100 ext. 392 | Fax: +91-265-2341449 | Mobile: +91
> 9879803401
> Email: devangp@inoxindia.com | web: www.inoxindia.com
>
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--
K Harish Kumar, MTech
Consultant for:
Corrosion Metallurgy
Failure Analysis Surface Coating
Thin Films Vacuum Systems QMS.

www.itindt.com

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Re: [MW:6220] PWHT of Bigger diameter & Long vessels

Its all depends ;
- Experience of person / company responsible (carrying out) PWHT in modular furnace
- Construction of modular furnace (proper and enough insulation to prevent heat loss
- how accurately one can build furnace without any openings / leakage (except opening with damper to control the air flow / exhaust)
- Nos of burner and burner location
- Circulation of hot air (again no of burner and location and blower capacity/position is important)
- Placement and Nos of thermocouple (thin / thick parts will have variation of 20 -80 deg C difference

If all the care taken for the above points then you can considered modular furnace as good as permanent and go ahead without any hesitation.

-  Thickness of part vessel to be heat treated (as the curnace efficiency will not be same as permanent furnace, time to penetrate thickness may take more time (1-1/2 hrs for 30 -50 mm thick material
 

In my opinion, internal firing would be better option with better controls if not much internals (which may hamper the uniform heating).   


Regards.
On 30 July 2010 15:48, suresh venkat <atozsuresh@gmail.com> wrote:
Dear all,
 
we have several equipments of diameter 5mts & above & length 30 mtrs & above. Our specs calls for PWHT in an enclosed furnace.
 
some of our fabricators expressed inability due to furnace size restrictions& informed us that use of Temporary Modular furnaces will pose risk to Quality of final product.
 
I need your advice on the following
 
1. Is doing PWHT in modular furnaces will create any problems to the equipment (in terms of quality)
2. can the temperature be properly controlled
3. Pwht can be performed properly without overheating or Under heating.
 
thanks
 
Suresh

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--
C. K. Purohit
Eng-Tech Weld1
Sr Welding Inspector

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[MW:6219] vacuum chamber

Does anybody have a technical information about Vacuum Chamber(1x10-6 mbar)?
 
Regards,
Devang Patel | Sr. Manager Engineering
Inox India Ltd. | 4th Floor, ABS Tower, Old Padra Road, Vadodara. Guj. India.
Voice: + 91-265-3056100 ext. 392 | Fax: +91-265-2341449 | Mobile: +91 9879803401
Email: devangp@inoxindia.com | web: www.inoxindia.com

Re: [MW:6217] pwht







Dear Mr. Rao

The sentence is not fully correct. PWHT is sometimes required on Austenitic Stainless steel.

Simple rule, any material subjected to lethal sevice designated by ASME Sec viii div-01 UW-02, will undergo PWHT.

PWHT is not required because , Cr will form Cr carbide which will cause sensitisation & reduce corrosion resistance. High temp can cause this problem, so PWHT is recommende with less temp.


PWHT is seldom required to avoid stress corrosion cracking.
Thermo-mechanical properties of welds in stainless steel is substantially improved by the implementation of a post weld heat treatment that iliminates sigma phase in the heat treated zone and favors niobium carbonitride precipitate formation in a desirable size range. In most cases, post weld heat treated material can be employed in pressurized devices at temperatures exceeding 550° C., which is currently regarded the upper safe temperature limit, and material according to the inventive subject matter was tested at temperature of up to 850° C. without reheat cracking.



if u could specify the material with conditions, i will be able to elaborate more on this topic.


Regards
Manpreet Singh
Welding Engineer
Spiecapag














On Fri, 30 Jul 2010 09:05:44 +0530 wrote
>dear sir

why we are not doing pwht in ss materials

please explain the reason



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[MW:6218] JOINT DESIGN

What is the suitable joint design (single V, square, bevel, ........)  for plate SA-283 Gr.B (S235JR) as the thickness is 6mm and the processes used is GMAW/FCAW+SAW

Re: [MW:6216] Welder Qualification-Thickness range

It is means that if the welder make a weld with thikness below 13 mm Thk.
he will be qualified aore duble thikness he weld for example if he weld thickness 9.53 mm he will be qualified up to 19.06 mm, but if he make a test in thikness for 13 mm and above he well be qualified for unlimited thikness for example if he make a test in 14.27 mm he will be qualified for unlimited thikness.

Best regards

--- On Wed, 7/28/10, naveen <dnkuit@gmail.com> wrote:

> From: naveen <dnkuit@gmail.com>
> Subject: [MW:6173] Welder Qualification-Thickness range
> To: "Materials & Welding" <materials-welding@googlegroups.com>
> Date: Wednesday, July 28, 2010, 8:03 PM
> Can you explain in detail regarding
> in SEC IX - QW452.2?
> Welder thickness range for unlimited thickness?we are
> confused?With
> example please?
>
> --
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> personel views and meant for educational purposes only,
> Users must take their own decisions w.r.t. applicable
> code/standard/contract documents.
>


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[MW:6215] Painting Service Plan?

Dear Folks,

Can some one clarify what is Painting Service Plan for Off-Shore
(above water) Painting Maintenance contract. If some one has sample
for model Plan please share.

--
With Regards,

Mohan, Q8.

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[MW:6214] Re: 6173] Welder Qualification-Thickness range

Yes sir,

i need thickness range only,ex.test coupon 25mm,gtaw 2 pass 7mm,smaw
18mm completed.what is qualified range?

Note:WQT qualfying based on WPS,wps thick range 5-20mm.

so can you explain?

On Jul 28, 9:38 pm, "Potter, Richard" <RPot...@itses.com> wrote:
> I think your reference may be wrong. Please look at QW-453 "PerformanceQualificationTesting".
>
>
>
> -----Original Message-----
> From: materials-welding@googlegroups.com
>
> [mailto:materials-welding@googlegroups.com] On Behalf Of naveen
> Sent: Wednesday, July 28, 2010 12:04 PM
> To: Materials & Welding
> Subject: [MW:6173]WelderQualification-Thickness range
>
> Can you explain in detail regarding in SEC IX - QW452.2?Welderthickness range for unlimited thickness?we are confused?With
> example please?
>
> --
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> 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.- Hide quoted text -
>
> - Show quoted text -

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Re: [MW:6213] FW: 6138] Inconel 690 Tube Bending

Gents,
Good morning,
Can anybody exaplain in details, solution annealing?
Thanks and regards.
John

On Sat, 31 Jul 2010 08:02:54 +0530 wrote
>




Mr
Hegde,

Inconel 690 (UNS N06690) is an
all austenitic alloy which is covered under Sec-II Part-B,SB-163. Krupp
Nicrofer 6030 is the product of Thyssen Krupp
VDM,one of the key
players for this type of alloy products. Although being austenitic,Inconel 690alloy have fairly high
UTS and could work harden considerably while cold bending. Hence
manufacturer recommends post forming heat treatment as
follows:-

Cold
working:- For
cold working the material should be in the annealed condition. Nicrofer 6030 has
a higher work-hardening rate than austenitic stainless steels. This
should be taken into account when selecting forming equipment. Interstage
(Intermediate) annealing may be necessary with high degrees of cold forming.
After cold working with more than 10% deformation
soft or solution annealing is required before use.
Soft annealing of
Nicrofer 6030 should
be carried out in the temperature range 1020 to 1070 °C (1870 to 1960 °F),
preferably at about 1040 °C (1900 °F).
Solution
annealing for improved creep strength is carried out at 1080 to 1150 °C (1980 to
2100 °F). Water quenching or rapid air cooling is recommended for thicknesses
above about 1.5 mm (0.06 in.) and is essential for maximum corrosion
resistance.

If the
design code for the exchangers is ASME ,Sec VIII, DIV-1, then the requirements
of UNF-79 would apply for post forming heat treatments, provided the
tubes are bent in the shop.

Should
the tubes be procured in finishedcondition( U-Bundle) from the mill
then the supplementary conditions of SB-163 would
apply.

The
OD of the tubes and wall thickness are very
small. Hence without proper tube bending devices U-bent areas could get
flattened. See the attached Special Metals brochure for your added
reference.

Thanks.

Pradip Goswami,P.Eng.
Welding
& Metallurgical Engineer/Specialist
Email-pgoswami@sympatico.ca,
pgoswami@quickclic.net
www.opg.com





From:
materials-welding@googlegroups.com [mailto:materials-welding@googlegroups.com]
On Behalf Of PB HEGDE
>Sent: Tuesday, July 27, 2010 2:11
AM
>To: materials-welding@googlegroups.com
>Subject: [MW:6138]
Inconel 690 Tube Bending
Dear Friends

I have a query and request you to give your
opinion

a) One of the
Heat exchangers, we want to use U
tubes of Inconel 690 having OD of 13mm and 19mm with thk of
1.2mm
b) Straight tubes
shall be purchased and bending shall be carried in house or at tube
manufacturer
c) I want
to know does it require any solution annealing after U bending ? and if
Yes what will be cooling media and method to avoid flattening of tube near
bend
d) What are
the testing require to ensure correct metallurgical , physical and
mechanical properties

Warm regards

Hegde P.B.
+919714714803

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views expressed/exchanged in this group are members personel views and meant for
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code/standard/contract documents.




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in error, please notify me by return e-mail and delete this message from your
system. Ontario Power Generation Inc.



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[MW:6212] FW: 6138] Inconel 690 Tube Bending

 

Mr Hegde,

 

Inconel 690 (UNS N06690) is an all austenitic alloy which is covered under Sec-II Part-B,SB-163.  Krupp Nicrofer 6030  is the product of Thyssen Krupp VDM  , one of the key players for this type of alloy products. Although being austenitic,  Inconel 690 alloy have fairly high UTS and  could work harden considerably while cold bending. Hence manufacturer recommends post forming heat treatment as follows:-

 

Cold working:- For cold working the material should be in the annealed condition. Nicrofer 6030 has a higher work-hardening rate than austenitic stainless steels. This should be taken into account when selecting forming equipment. Interstage (Intermediate) annealing may be necessary with high degrees of cold forming. After cold working with more than 10% deformation soft or solution annealing is required before use.

Soft annealing of Nicrofer 6030 should be carried out in the temperature range 1020 to 1070 °C (1870 to 1960 °F), preferably at about 1040 °C (1900 °F).

Solution annealing for improved creep strength is carried out at 1080 to 1150 °C (1980 to 2100 °F). Water quenching or rapid air cooling is recommended for thicknesses above about 1.5 mm (0.06 in.) and is essential for maximum corrosion resistance.

 

If the design code for the exchangers is ASME ,Sec VIII, DIV-1, then the requirements of UNF-79 would apply for post forming  heat treatments, provided the tubes are bent in the shop.

 

Should the tubes be procured in finished  condition( U-Bundle) from the mill  then the supplementary conditions of SB-163 would apply.

 

The  O  D of the tubes and wall thickness are very small. Hence without proper tube bending devices U-bent areas could get flattened. See the attached Special Metals brochure for your added reference.

 

Thanks.

 

Pradip Goswami,P.Eng.

Welding & Metallurgical Engineer/Specialist

Email-pgoswami@sympatico.ca,

pgoswami@quickclic.net 

www.opg.com 

 

 


From: materials-welding@googlegroups.com [mailto:materials-welding@googlegroups.com] On Behalf Of PB HEGDE
Sent: Tuesday, July 27, 2010 2:11 AM
To: materials-welding@googlegroups.com
Subject: [MW:6138] Inconel 690 Tube Bending

Dear Friends

 

I have a query and request you to give your opinion

 

a)      One of the  Heat exchangers, we want to use  U tubes  of Inconel 690 having  OD of 13mm and 19mm  with thk of 1.2mm

b)      Straight tubes shall be purchased and bending shall be carried  in house  or at tube manufacturer

c)       I want to know does it require any solution annealing after U bending ? and if Yes  what will be cooling media and method to avoid flattening of tube near bend

d)       What are the testing require to ensure correct metallurgical , physical and  mechanical properties

 

Warm regards

 

Hegde P.B.

+919714714803

 

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THIS MESSAGE IS ONLY INTENDED FOR THE USE OF THE INTENDED RECIPIENT(S) AND MAY CONTAIN INFORMATION THAT IS PRIVILEGED, PROPRIETARY AND/OR CONFIDENTIAL. If you are not the intended recipient, you are hereby notified that any review, retransmission, dissemination, distribution, copying, conversion to hard copy or other use of this communication is strictly prohibited. If you are not the intended recipient and have received this message in error, please notify me by return e-mail and delete this message from your system. Ontario Power Generation Inc.

[MW:6211] FW: 6199-heat treatment procedure


 

Hi Subrata,

 

Generally, Hastelloy C-276 alloy is  furnished in the solution heat-treated condition unless otherwise specified. C-276 alloy is normally solution heat treated at 2050°F (1121°C) and rapid quenched.

 

Parts which have been hot-formed should be solution annealed prior to final fabrication or installation, if possible.

 

ASME specifications for Hastelloy:-C-276 alloy plate, sheet, strip, bar, tubing and pipe are SB-574, SB-575, SB-619, SB-622 and SB-626 under UNS number N10276. General thumb rule for this alloy is to be supplied in Solution Annealed condition, to ensure highest corrosion resistance and the best mechanical properties.

 

Thanks

 

Pradip Goswami,P.Eng.

Welding & Metallurgical Engineer/Specialist

Email-pgoswami@sympatico.ca,

pgoswami@quickclic.net 

www.opg.com

 

 


From: materials-welding@googlegroups.com [mailto:materials-welding@googlegroups.com] On Behalf Of subrata das
Sent: Friday, July 30, 2010 2:28 AM
To: materials-welding@googlegroups.com
Subject: [MW:6199] heat treatment procedure

Dear all

Kindly share your opinion about the heat treatment procedure for SB622 UNS N10276 Nickel Alloy Steel Pipe/Fittings ?  

 

Regards

Subrata Das

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THIS MESSAGE IS ONLY INTENDED FOR THE USE OF THE INTENDED RECIPIENT(S) AND MAY CONTAIN INFORMATION THAT IS PRIVILEGED, PROPRIETARY AND/OR CONFIDENTIAL. If you are not the intended recipient, you are hereby notified that any review, retransmission, dissemination, distribution, copying, conversion to hard copy or other use of this communication is strictly prohibited. If you are not the intended recipient and have received this message in error, please notify me by return e-mail and delete this message from your system. Ontario Power Generation Inc.

Friday, July 30, 2010

Re: [MW:6210] API 653 Tank Repair

Dear all,
thanks for your reply.

these are defects identified by inspection team.

1. Fixed Roof - Remove the weld defects from the roof to shell angle and repair

2. Fixed Roof - Remove the weld defect from the butt weld adjoining Plates

3. Bottom - Puddle weld or install a lap-welded patch plate over the 0.150 inch deep internal pit on the sump bottom plate.

4. Bottom - Remove the corroded manual gauge repad/striker plate,


Regards,
Vijay.

On Fri, Jul 30, 2010 at 2:28 AM, ahmmad ali mohammed <ali47.alisha@gmail.com> wrote:
Dear Vijay
 
you are not given clear details about the location and type of repaire.
generally the following steps to be follow---
first thing is to ensure the type and depthe of defect by ndt methods as per site conditions.
if a repaire is crack
drill at the both ends of crack to prevent further propgation of crack  during grinding.
remove the defect by grinding only(gas cutting is not allowed).
after grinding ensure compleat removal of crack/slag etc by applying ndt methods
weld the cavity and apply final ndt (ut or rt) 
apply highly penetrating oil to ensure there is no leakage.
if necessary check the hardness value
 
i think this information may help you.
 
with regards
ahmmad ali 
 


 
On Sun, Jul 25, 2010 at 8:37 PM, Vijay <k.vijayaraj@gmail.com> wrote:
Dear All,

We are going to carry out Repair of Diesel Storage Tanks as per API
653 specification.

Since am new to API 653, kindly guide me what are the things to be
carried out for Repair.

What are key points and what measures to be taken before carrying our
the repair.

Thanks in Advance. Kindly feed your inputs.

Regards,
Vijay.

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Re: [MW:6209] PWHT of Bigger diameter & Long vessels

No probblem at all.
When you use Modular furnaces , look at the whether it is electrical heated or fuel fired.
Electrical has nothing to worry.
If it is fuel fired,  place additional temp recorders (thermo couples) on the vessel portion nearer to burner.
Burner may be provided wioth deflector or burner direction need to be examined so that no hot spots develop.
Simialrly farthest portion of vessel will have thermo couples in line with ASME guidelines. As such I do not forsee any problem.
Tagore

On Fri, Jul 30, 2010 at 6:48 AM, suresh venkat <atozsuresh@gmail.com> wrote:
Dear all,
 
we have several equipments of diameter 5mts & above & length 30 mtrs & above. Our specs calls for PWHT in an enclosed furnace.
 
some of our fabricators expressed inability due to furnace size restrictions& informed us that use of Temporary Modular furnaces will pose risk to Quality of final product.
 
I need your advice on the following
 
1. Is doing PWHT in modular furnaces will create any problems to the equipment (in terms of quality)
2. can the temperature be properly controlled
3. Pwht can be performed properly without overheating or Under heating.
 
thanks
 
Suresh

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RE: [MW:6208] PWHT of Bigger diameter & Long vessels

sent from my handheld
-----Original Message-----
From: suresh venkat
Sent: 30/07/2010 5:18:22 pm
Subject: [MW:6205] PWHT of Bigger diameter & Long vessels

Dear all,

we have several equipments of diameter 5mts & above & length 30 mtrs &
above. Our specs calls for PWHT in an enclosed furnace.

some of our fabricators expressed inability due to furnace size
restrictions& informed us that use of Temporary Modular furnaces will pose
risk to Quality of final product.

I need your advice on the following

1. Is doing PWHT in modular furnaces will create any problems to the
equipment (in terms of quality)
2. can the temperature be properly controlled
3. Pwht can be performed properly without overheating or Under heating.

thanks

Suresh

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Re: [MW:6207] PWHT of Bigger diameter & Long vessels

No problem with modular fc wehave carried pwht of 25 mt vessel n 250 t. Regards. Hegde

Sent from my BlackBerry® smartphone from !DEA


From: suresh venkat <atozsuresh@gmail.com>
Sender: materials-welding@googlegroups.com
Date: Fri, 30 Jul 2010 20:48:22 +0900
To: <materials-welding@googlegroups.com>
ReplyTo: materials-welding@googlegroups.com
Subject: [MW:6205] PWHT of Bigger diameter & Long vessels

Dear all,
 
we have several equipments of diameter 5mts & above & length 30 mtrs & above. Our specs calls for PWHT in an enclosed furnace.
 
some of our fabricators expressed inability due to furnace size restrictions& informed us that use of Temporary Modular furnaces will pose risk to Quality of final product.
 
I need your advice on the following
 
1. Is doing PWHT in modular furnaces will create any problems to the equipment (in terms of quality)
2. can the temperature be properly controlled
3. Pwht can be performed properly without overheating or Under heating.
 
thanks
 
Suresh

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[MW:6206] welding of cast heat resistant steels

Dear all,

could anybody advise if Nb content level can cause weld cracking in
service?

thank you in adnvacne

Best Regards
Klara

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RE: [MW:6204] Weld-o-let welding minimum fillet size requirement

Complete bevel provided by mfr. to be filed (crotch). You may search earlier messages in the group on this subject.

sent from my handheld
-----Original Message-----
From: mubarish muhammed
Sent: 30/07/2010 4:56:32 pm
Subject: [MW:6203] Weld-o-let welding minimum fillet size requirement

Header pipe thickness is 41mm weldolet thickness 23mm , but other side
of weld-o-let 6mm. Please give me minimum weld metal for header to
weld- o-let joints whether we can weld less than 23mm & if going like
how much minimum fillet length required.

Mohd Mubarish.P.M
Abu Dhabi.
Welding Engineer.
CSWIP-3.1

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[MW:6205] PWHT of Bigger diameter & Long vessels

Dear all,
 
we have several equipments of diameter 5mts & above & length 30 mtrs & above. Our specs calls for PWHT in an enclosed furnace.
 
some of our fabricators expressed inability due to furnace size restrictions& informed us that use of Temporary Modular furnaces will pose risk to Quality of final product.
 
I need your advice on the following
 
1. Is doing PWHT in modular furnaces will create any problems to the equipment (in terms of quality)
2. can the temperature be properly controlled
3. Pwht can be performed properly without overheating or Under heating.
 
thanks
 
Suresh

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[MW:6203] Weld-o-let welding minimum fillet size requirement

Header pipe thickness is 41mm weldolet thickness 23mm , but other side
of weld-o-let 6mm. Please give me minimum weld metal for header to
weld- o-let joints whether we can weld less than 23mm & if going like
how much minimum fillet length required.

Mohd Mubarish.P.M
Abu Dhabi.
Welding Engineer.
CSWIP-3.1

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[MW:6202] Test for PQR of Super Duplex Stainless steel plate UNS32750

I suppose you mean ASTM G 48

-----Original Message-----
From: materials-welding@googlegroups.com [mailto:materials-welding@googlegroups.com] On Behalf Of PB HEGDE
Sent: Friday, July 30, 2010 9:45 AM
To: materials-welding@googlegroups.com
Subject: [MW:6195] RE: 6187] Test for PQR of Super Duplex Stainless steel plate UNS32750

In addition to ASME sec IX requirement it is better to qualify as per GS8 specification

Regards

Hegde P.B.

-----Original Message-----
From: materials-welding@googlegroups.com
[mailto:materials-welding@googlegroups.com] On Behalf Of yusufkhan pathan
Sent: Thursday, July 29, 2010 3:32 PM
To: Materials & Welding
Subject: [MW:6187] Test for PQR of Super Duplex Stainless steel plate UNS32750

Dear all,

I have to prepare a PQR with GTAW+SMAW for Super duplex SS Plate of UNS 32750 of thickness 8mm.
Please suggest me the type and references of test to be conducted for the specimen as per ASME SecIX.

Thanks in advance.

Regards.
Yusufkhan
+91-9916008202


Filtered by Hosted Filtering


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[MW:6201] Electrode TC

Dear All,
 
I have one electrode test certificate of E6013 size 2.5 mm of HONAVAR ELECTRODES PVT. LTD.
I have some query on it
1)In sec II part-C SFA 5.1 there is mention that not specified for P,S etc so what is the max.limit of these elements like P,S?
 
2)I have same manufacture other TCs Certified by QA/QC manager but this certificate is not. Can we demand for this?
only signed by preparer.Can we accept this?
 
3)Pl. let me know what is basic requirement for review TC of electrode or filler wire?
 
Thanks,
With Best Regards,
Ramesh Barot

Re: [MW:6200] pwht

dear sir,
           SS materials have problem of carbide precipitation after PWHT, which detrimental to the very basic nature or use of SS material.

2010/7/29 rao <amma0509@gmail.com>
dear sir
why we are not doing pwht in ss materials
please explain the reason

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--
K Harish Kumar,

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[MW:6199] heat treatment procedure

Dear all

Kindly share your opinion about the heat treatment procedure for SB622 UNS N10276 Nickel Alloy Steel Pipe/Fittings ?  

 

Regards

Subrata Das

RE: [MW:6198] why we are not doing positive material identification in carbon steel materials


Dear Mr. Manish,

PMI (Positive Material Identification) is method to segregate / identify the particular material from the lot at the source / storage / before welding and during service also, without destructing it.

Presently, Portable X - Ray Fluorescence or Optical Emission Spectra Analyzers are widely used for PMI. Rather they become the identity of PMI testing.
Hence, it is to be noted that,  these are one of the method for material identification without destructing it.

These machines, normally handy instruments gives the chemical composition of the material, at any point of time. You can refer various instruments manufacturers(eg. oxford, Metorex etc)  website for further details, limitation of testing and operation details.

PMI testing is normally asked by process licenser, consultant, client in order to avoid the mix of material (in other word to identify the positive material ) in lot. Therefore, it is independent of  type of material.

With Best Regards,

Jignesh R Rana
Manager - QA & QC

Linde Engineering India Pvt. Ltd.
38, Nutan Bharat Society, Alkapuri, Vadodara 390007, India
Tel.: +91 265 3056789, Fax: +91 265 2335213 , Mobil:  +91 90999 86019
jignesh.rana@linde-le.com, www.linde-india.com

This e-mail is confidential. If you are not the intended recipient, please notify us immediately. You should not disclose its contents to any other person nor use it for any purposes.





"Rohit Bafna" <rohit@tcreng.com>
Sent by: materials-welding@googlegroups.com

30-07-2010 09:52

Please respond to
materials-welding@googlegroups.com

To
<materials-welding@googlegroups.com>
cc
Subject
RE: [MW:6197] why we are not doing positive material identification         in carbon steel materials





Dear all,
 
In these cases, when you need to quantify C, S, P, Mn, and Si then you need to use PMI technique utilizing the portable optical emission spectrometer. Arcmet 8000 which we have is a good equipment to undertake such tests at site in a non destructive manner.
 
Regards,
Rohit Bafna
Director - Global Sales
 
------------------------------------------
TCR Engineering Services (India)
TCR Arabia (KSA), TCR Kuwait

TCR Consulting FZC (UAE)
TCR Africa (RSA)
TCR World Inc. (USA)
Tel: +91-983-353-0400
www.tcreng.com
Material Testing
| Consulting | Inspection | NDT Services
-------------------------------------------
 
From: materials-welding@googlegroups.com [mailto:materials-welding@googlegroups.com] On Behalf Of Manish.Maheta@Linde-LE.com
Sent:
Thursday, July 29, 2010 11:02 PM
To:
materials-welding@googlegroups.com
Subject:
Re: [MW:6195] why we are not doing positive material identification in carbon steel materials

 

Carbon, Silicon, Sulfur, and Phosphorous are very light elements and it is not possible to quantify such as elements by performing PMI.

 Jigneshbhai ,your concurrence is requested for subject matter.


Regards,
Manish

rao <amma0509@gmail.com>
Sent by: materials-welding@googlegroups.com

29/07/10 22:10


Please respond to
materials-welding@googlegroups.com


To
"Materials & Welding" <materials-welding@googlegroups.com>
cc
Subject
[MW:6193] why we are not doing positive material identification in         carbon steel materials

 







dear sir
why we are not doing positive material identification in carbon steel
materials
please explain it

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RE: [MW:6197] why we are not doing positive material identification in carbon steel materials

Dear all,

 

In these cases, when you need to quantify C, S, P, Mn, and Si then you need to use PMI technique utilizing the portable optical emission spectrometer. Arcmet 8000 which we have is a good equipment to undertake such tests at site in a non destructive manner.

 

Regards,

Rohit Bafna

Director - Global Sales

 

------------------------------------------

TCR Engineering Services (India)
TCR Arabia (KSA), TCR Kuwait

TCR Consulting FZC (UAE)

TCR Africa (RSA)

TCR World Inc. (USA)

Tel: +91-983-353-0400

www.tcreng.com
Material Testing | Consulting | Inspection | NDT Services

-------------------------------------------

 

From: materials-welding@googlegroups.com [mailto:materials-welding@googlegroups.com] On Behalf Of Manish.Maheta@Linde-LE.com
Sent: Thursday, July 29, 2010 11:02 PM
To: materials-welding@googlegroups.com
Subject: Re: [MW:6195] why we are not doing positive material identification in carbon steel materials

 


 Carbon, Silicon, Sulfur, and Phosphorous are very light elements and it is not possible to quantify such as elements by performing PMI.
  Jigneshbhai ,your concurrence is requested for subject matter.

Regards,
Manish


rao <amma0509@gmail.com>
Sent by: materials-welding@googlegroups.com

29/07/10 22:10

Please respond to
materials-welding@googlegroups.com

To

"Materials & Welding" <materials-welding@googlegroups.com>

cc

Subject

[MW:6193] why we are not doing positive material identification in         carbon steel materials

 




dear sir
why we are not doing positive material identification in carbon steel
materials
please explain it

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[MW:6195] RE: 6187] Test for PQR of Super Duplex Stainless steel plate UNS32750

In addition to ASME sec IX requirement it is better to qualify as per GS8
specification

Regards

Hegde P.B.

-----Original Message-----
From: materials-welding@googlegroups.com
[mailto:materials-welding@googlegroups.com] On Behalf Of yusufkhan pathan
Sent: Thursday, July 29, 2010 3:32 PM
To: Materials & Welding
Subject: [MW:6187] Test for PQR of Super Duplex Stainless steel plate
UNS32750

Dear all,

I have to prepare a PQR with GTAW+SMAW for Super duplex SS Plate of
UNS 32750 of thickness 8mm.
Please suggest me the type and references of test to be conducted for
the specimen as per ASME SecIX.

Thanks in advance.

Regards.
Yusufkhan
+91-9916008202

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w.r.t. applicable code/standard/contract documents.

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Re: [MW:6195] why we are not doing positive material identification in carbon steel materials


 Carbon, Silicon, Sulfur, and Phosphorous are very light elements and it is not possible to quantify such as elements by performing PMI.
  Jigneshbhai ,your concurrence is requested for subject matter.

Regards,
Manish



rao <amma0509@gmail.com>
Sent by: materials-welding@googlegroups.com

29/07/10 22:10

Please respond to
materials-welding@googlegroups.com

To
"Materials & Welding" <materials-welding@googlegroups.com>
cc
Subject
[MW:6193] why we are not doing positive material identification in         carbon steel materials





dear sir
why we are not doing positive material identification in carbon steel
materials
please explain it

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Re: [MW:34832] Inquiry about Single Bevel with Back Grinding

Dear Uday, As per your question that one is called with backing only,Simple both side you are welding it is backing with strip or without st...