Materials & Welding: November 2013

Saturday, November 30, 2013

[MW:19419] Shielding gas consumption calculation- GMAW

Dear Experts

Kindly clarify how to calculate the shielding gas consumption estimation for GMAW process.

Pls give some examples.

Thanks & Regards

Selas

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Re: [MW:19419] special UT procedure inspection for small pipe diameter and high thickness

dear all

this second mail for you please answer me i want to guide.

please i want to how do special UT procedure inspection for small pipe diameter and high thickness and if you have procedure copy to guide me.

the requirement of Client / Specification depend on ASME code because all piping work is high gas small bore up to 6" and thickness up to 11.3mm carbon steel and alloy steel P91 and P11.

regrades.

On Mon, Nov 25, 2013 at 8:58 AM, Shipo shipo <shipo.ptj@gmail.com> wrote:

dear P Govindan

thank you for answer and the requirement of Client / Specification depend on ASME code because all piping work is high gas small bore up to 6" and thickness up to 11.3mm carbon steel and alloy steel P91 and P11.

On Sun, Nov 24, 2013 at 5:03 PM, Perumal Govindan <perumalgovindan@gmail.com> wrote:

Mr. Shipo,

Find out the requirement of Client / Specification. Once known the Client requirement we may write a special UT procedure, after referring Codes and Standards.

P Govindan

On Sun, Nov 24, 2013 at 12:31 PM, Shipo shipo <shipo.ptj@gmail.com> wrote:

dear all
please i want to how do special UT procedure inspection for small pipe diameter and high thickness and if you have procedure copy to guide me.

--

BEST REGARDS

SHAABAN MOHAMED ALI SOLIMAN

  QA/QC DEPARTMENT
   PETROJET MARINE DEPARTMENT

Mobile: +2 012 27 02 44 53

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BEST REGARDS

SHAABAN MOHAMED ALI SOLIMAN
  QA/QC DEPARTMENT

   PETROJET MARINE DEPARTMENT

Mobile: +2 012 27 02 44 53

BEST REGARDS

SHAABAN MOHAMED ALI SOLIMAN

QA/QC DEPARTMENT

PETROJET MARINE DEPARTMENT

Mobile: +2 012 27 02 44 53

Re: [MW:19415] REGARDING PWHT OF AIR VESSEL

if the fiber elongation exceeds the specified limit PWHT is required, since in your case vessel is subjected to PWHT, you need not worry about it as the dished along with entire vessel will be heat treated.

On 30 November 2013 11:02, Pinaki Boxi <boxi.pinaki@gmail.com> wrote:

Respected sir,
Description of vessel:- 18097m length X 4.1m dia
Shell course thickness :- 24mm
2:1 Elliptical Head thickness :- 28mm after forming it will be come 25mm

Material :- SA516 Gr70
Service :- Air
As per section VIII div-I UCS-79 reduction by cold forming the as rolled thickness is more than 10./. at any location where the extreme fiber elongation exceeds 5./.

PWHT is required.
But as per drawing it is on PWHT,
i am really confused regarding forming of 2:1 Elliptical Head PHWT.
So pls conformed me 2:1 Elliptical Head PHWT is required or not, if no so what base of section - VIII div-I it is not required, or PWHT is required what base of section - VIII div-I it is required,

--
Thanks & Regards
Pinaki Boxi.
Fujairah, AUE.

[MW:19416] IIW.IWIP.COMPREHENSIVE Course Materials

Dear Experts

Good day to you all.
I m holding IWI basic and I believe that I will be eligible for IWI COMPREHENSIVE without going to seminar.so I will be having a test and an interview. And therefore I would like to get some course books for the same and prepare well.
So if anyone have attended the course and having any course materials please help me by giving any material that you have.
And give some ideas and important topics discussed in interview .

Thanks n regards
Raj

Sent from Yahoo! Mail on Android

[MW:19411] Re: Repair of Body cracks for A 217 Gr WC6

this type of weld repair procedure is called as stelliteing.

Essential requirements: 1. WPS for same or equivalent grade of material.

2. A good welder qualified for welding especially insitu welding.

3. PQR

For Vinod : i have experienced same issue for one of my repair project on an Marine Boiler Superheater Valve having same material composition of SA 217 WC6.

You can use ECoCr-A welding electrode for welding (SFA - 5.13)

PWHT depending upon thickness.

Cheers,

Sharafat Dhanse.

[MW:19411] Re: Equivalent ASTM material for EN S275JR

Dear Mr.Promodh,

Sorry for this very late reply.ASTM A283D Maybe Equivalent for this EN S275JR.

Kindly check and reply if it is right.

Regards,

Jawahar.
On Saturday, July 23, 2011 3:16:35 PM UTC+3, PRAMODH NAIR wrote:

Experts,

Could you please give me the equivalent ASTM material for EN S275JR with reference code document.

Regards

Pramodh

[MW:19413] REGARDING PWHT OF AIR VESSEL

Respected sir,

Description of vessel:- 18097m length X 4.1m dia

Shell course thickness :- 24mm

2:1 Elliptical Head thickness :- 28mm after forming it will be come 25mm

Material :- SA516 Gr70

Service :- Air

As per section VIII div-I UCS-79 reduction by cold forming the as rolled thickness is more than 10./. at any location where the extreme fiber elongation exceeds 5./.

PWHT is required.

But as per drawing it is on PWHT,

i am really confused regarding forming of 2:1 Elliptical Head PHWT.

So pls conformed me 2:1 Elliptical Head PHWT is required or not, if no so what base of section - VIII div-I it is not required, or PWHT is required what base of section - VIII div-I it is required,

--
Thanks & Regards
Pinaki Boxi.
Fujairah, AUE.

Friday, November 29, 2013

Re: [MW:19414] Copper Welding

Dear Kannayeram & Bathula,

Even did PQR and welder qualification for the same.

On Friday, November 29, 2013 3:00:17 PM UTC+3, kannayeram gnanapandithan wrote:

Hope that this is not phosphor brone alloy then why u choose ER CuSn1, u should have choosen ERCu. As Bathula said, use Helium, preheat to around 400degree celsius, cover with glass wool area other than jonit to avoid dispation of heat.

On Fri, Nov 29, 2013 at 2:58 PM, Raghuram Bathula <raghura...@gmail.com> wrote:

Use Helium as a shielding gas because, risk of oxide entrapment in the weld pool is greatly reduced

and provides deeper penetration.

Preheating of the base metal is typically required to maintain the base metal at welding temperatures
without preheating, the high thermal conductivity of copper results in excessive loss of heat away from the

weld zone.

On 29 November 2013 14:46, Avis <avis...@gmail.com> wrote:

Dear All,

Anybody having experience is copper welding. If yes please share your difficultites, and also welder availablity for the welding.

The base materials is ASTM B42 UNS C12200 (Cu - 99.9%)

P. No. is 31, SFA - A5.7, F. No. 31.

Filler Wire Class - ER Cu Sn 1

With regards,
S. Sivasubramanian, Kuwait.

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Re: [MW:19410] Use of ASME IX WPS for Dissimilar Thickness of More than Range of Groove Weld Thickness Qualified?

1. You can use compensatory block on thinner side for RT, ask your NDT contractor, he might arrange one.

2. CVN Impact specimen can be taken, did you check with the lab, why it can't be taken?

On 29 November 2013 16:58, <Vijay.Tayade@akersolutions.com> wrote:

Hi,

Considering unequal wall thickness,
1. Radiography control of welded joints will be possible to do?

RT films will give too much exposure on the thinnest side, not enough exposure on the thickest side. Should Ultrasonic testing will remains as only options?

2. Charpy V Testing of Welding Procedure Qualification can be possible?

- specimen placement in the CAP FL at Thicker member (and FL+2 and FL+5) side and CAP WM. Please see attached sketches.

Any thoughts?

Best regards,
Vijay Tayade
Welding Engineer

From: materials-welding@googlegroups.com [mailto:materials-welding@googlegroups.com] On Behalf Of sevak hiren
Sent: Wednesday, September 12, 2012 10:56 AM
To: materials-welding@googlegroups.com
Subject: Re: [MW:15278] Use of ASME IX WPS for Dissimilar Thickness of More than Range of Groove Weld Thickness Qualified?

Dear,

Since this joint may be considered as single bevel groove weld joint (CJP) and considering your WPS/PQR is qualified max. up to 40 mm base metal thk. with similar thickness abutting joint, please read bold letters remarks below.

ASME Section IX. QW-202.4 Dissimilar Base Metal Thicknesses.

WPS qualified on groove welds shall be applicable for production welds between dissimilar base metal thicknesses provided:

(1) For P-No. 8, P-No. 41, P-No. 42, P-No. 43, PNo.44, P-No. 45, P-No. 46, P-No. 49, P-No. 51, P-No.52, P-No. 53, P-No. 61, and P-No. 62 metal, there shall be no limitation on the maximum thickness of the thicker production member in joints of similar P-Number materials provided qualification was made on base metal having a thickness of 1⁄4 in. (6 mm) or greater.

Remark 1: If your both joining material P Nos. are same & are one of the above mentioned P Nos. then the said joint is accepted.

Remark 2: If one of your production joint material P No. is other then of the above mentioned P Nos. then the said joint is not accepted.

Remark 3: If both the joining materials are having different P nos. then the said joint is not accepted.

Thanks & Regards

Hiren Sevak

On Mon, Sep 10, 2012 at 6:15 PM, Tariq Hussain <tariqhussain632@gmail.com> wrote:
Dear All,

Please advise whether A WPS qualified per ASME Sec IX. with PQR Thickness 20mm, can be used for below Joint as shown below, with dissimilar thickness of 92mm and 30mm? As shown in below figure.

Kindly Give Sec, IX clasue reference if possible.

Re: [MW:19409] Cutting & Grinding Disc Composition

probably it can help you

http://multimedia.3m.com/mws/mediawebserver?mwsId=66666UF6EVsSyXTtnXf2oxfcEVtQEVs6EVs6EVs6E666666--&fn=Green%2520Corps%2520Rigid%2520%2520Grinding.pdf

On 29 November 2013 17:01, Richard robes <mech.processes@gmail.com> wrote:

Gent's
Issue has been going on regarding an ncr and colleagues commenting that there is no change in composition of CS and SS discs but no document related to it, can anyone attach a document proof regarding the issue.

Regards
Richard

On Fri, Nov 29, 2013 at 12:44 PM, José Luís Ferreira <jluis.nf@gmail.com> wrote:

considering the new discs, there is no problem of contamination, the problem of discs made to CS is that they are not suitable for the hardness and strenght of the SS, and thus becomes more expensive and less productive.

On Nov 28, 2013 1:34 PM, "Richard robes" <mech.processes@gmail.com> wrote:

Dear Gents,

Please comment regarding the issue,
What is the composition of SS and CS Cutting & Grinding wheels? Is there any problem if we use Cutting wheel marked as for CS in SS Piping material? Is there any material that can cause contamination and rust in SS piping if we use CS cutting / grinding wheel?

Regards
Richard

---

[MW:19405] RE: 19400] Duplex Stainless Steel: Metallurgy, engineering codes & welding practices

The correction to these mistakes will appear as "errata" in the 2nd part of this article.

Thanks

Pradip Goswami, P.Eng,IWE

Welding & Metallurgical Specialist

Ontario, Canada

pgoswami@quickclic.net

pgoswami@sympatico.ca

From: pgoswami [mailto:pgoswami@quickclic.net]
Sent: Friday, November 29, 2013 7:34 AM
To: 'Raghuram Bathula'; 'Raghuram Bathula'
Cc: 'materials-welding@googlegroups.com'
Subject: FW: 19400] Duplex Stainless Steel: Metallurgy, engineering codes & welding practices

Mr... Bathula,

Thanks for your appreciation.Although we took enough care to write a good article, some editorial mistakes in the paper did occur. Other than those this paper (a review article) should be worth reading and enjoying.

Regards.

Pradip Goswami, P.Eng,IWE

Welding & Metallurgical Specialist

Ontario, Canada

pgoswami@quickclic.net

pgoswami@sympatico.ca

From: materials-welding@googlegroups.com [mailto:materials-welding@googlegroups.com] On Behalf Of Raghuram Bathula
Sent: Friday, November 29, 2013 3:52 AM
To: Materials-Welding
Subject: [MW:19400] Duplex Stainless Steel: Metallurgy, engineering codes & welding practices

Congratulations Mr Pradip Goswami for the article in current issue of SSW

Duplex Stainless Steels (DSS) are extremely high grade engineering alloys combining good corrosion resistance with high strength and ease of fabrication. These steels are frequently used in the oil and gas industries both in upstream and downstream applications for assemblies such as pipe work systems, manifolds and risers. Furthermore, these are used in the petrochemical industry in the form of pipelines and pressure vessels. These steels are designed to provide better corrosion resistance, particularly chloride stress corrosion and chloride pitting corrosion, in addition to having a higher strength than standard austenitic stainless steels such as Type 304 or 316, enabling thinner sections to be used and providing significant cost benefits.

By Ramesh Bapat, Senior Principal Engineer, Foster Wheeler Upstream & Pradip Goswami, P. Eng., IWE, Welding and Metallurgical Specialist - Ontario, Canada

[MW:19404] FW: 19400] Duplex Stainless Steel: Metallurgy, engineering codes & welding practices

Mr... Bathula,

Regards.

Pradip Goswami, P.Eng,IWE

Welding & Metallurgical Specialist

Ontario, Canada

pgoswami@quickclic.net

pgoswami@sympatico.ca

Congratulations Mr Pradip Goswami for the article in current issue of SSW

By Ramesh Bapat, Senior Principal Engineer, Foster Wheeler Upstream & Pradip Goswami, P. Eng., IWE, Welding and Metallurgical Specialist - Ontario, Canada

Re: [MW:19406] Copper Welding

Hope that this is not phosphor brone alloy then why u choose ER CuSn1, u should have choosen ERCu. As Bathula said, use Helium, preheat to around 400degree celsius, cover with glass wool area other than jonit to avoid dispation of heat.

On Fri, Nov 29, 2013 at 2:58 PM, Raghuram Bathula <raghurambathula@gmail.com> wrote:

Use Helium as a shielding gas because, risk of oxide entrapment in the weld pool is greatly reduced

and provides deeper penetration.

Preheating of the base metal is typically required to maintain the base metal at welding temperatures
without preheating, the high thermal conductivity of copper results in excessive loss of heat away from the

weld zone.

On 29 November 2013 14:46, Avis <aviss2000@gmail.com> wrote:

Dear All,

Anybody having experience is copper welding. If yes please share your difficultites, and also welder availablity for the welding.

The base materials is ASTM B42 UNS C12200 (Cu - 99.9%)

P. No. is 31, SFA - A5.7, F. No. 31.

Filler Wire Class - ER Cu Sn 1

With regards,
S. Sivasubramanian, Kuwait.

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Re: [MW:19406] Cutting & Grinding Disc Composition

Gent's

Issue has been going on regarding an ncr and colleagues commenting that there is no change in composition of CS and SS discs but no document related to it, can anyone attach a document proof regarding the issue.

Regards

Richard

On Fri, Nov 29, 2013 at 12:44 PM, José Luís Ferreira <jluis.nf@gmail.com> wrote:

considering the new discs, there is no problem of contamination, the problem of discs made to CS is that they are not suitable for the hardness and strenght of the SS, and thus becomes more expensive and less productive.

On Nov 28, 2013 1:34 PM, "Richard robes" <mech.processes@gmail.com> wrote:

Dear Gents,

Please comment regarding the issue,
What is the composition of SS and CS Cutting & Grinding wheels? Is there any problem if we use Cutting wheel marked as for CS in SS Piping material? Is there any material that can cause contamination and rust in SS piping if we use CS cutting / grinding wheel?

Regards
Richard

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RE: [MW:19408] Use of ASME IX WPS for Dissimilar Thickness of More than Range of Groove Weld Thickness Qualified?

Hi,

Considering unequal wall thickness,

1. Radiography control of welded joints will be possible to do?

RT films will give too much exposure on the thinnest side, not enough exposure on the thickest side. Should Ultrasonic testing will remains as only options?

2. Charpy V Testing of Welding Procedure Qualification can be possible?

- specimen placement in the CAP FL at Thicker member (and FL+2 and FL+5) side and CAP WM. Please see attached sketches.

Any thoughts?

Best regards,
Vijay Tayade
Welding Engineer

From: materials-welding@googlegroups.com [mailto:materials-welding@googlegroups.com] On Behalf Of sevak hiren
Sent: Wednesday, September 12, 2012 10:56 AM
To: materials-welding@googlegroups.com
Subject: Re: [MW:15278] Use of ASME IX WPS for Dissimilar Thickness of More than Range of Groove Weld Thickness Qualified?

Dear,

Since this joint may be considered as single bevel groove weld joint (CJP) and considering your WPS/PQR is qualified max. up to 40 mm base metal thk. with similar thickness abutting joint, please read bold letters remarks below.

ASME Section IX. QW-202.4 Dissimilar Base Metal Thicknesses.

WPS qualified on groove welds shall be applicable for production welds between dissimilar base metal thicknesses provided:

(1) For P-No. 8, P-No. 41, P-No. 42, P-No. 43, PNo.44, P-No. 45, P-No. 46, P-No. 49, P-No. 51, P-No.52, P-No. 53, P-No. 61, and P-No. 62 metal, there shall be no limitation on the maximum thickness of the thicker production member in joints of similar P-Number materials provided qualification was made on base metal having a thickness of 1⁄4 in. (6 mm) or greater.

Remark 1: If your both joining material P Nos. are same & are one of the above mentioned P Nos. then the said joint is accepted.

Remark 2: If one of your production joint material P No. is other then of the above mentioned P Nos. then the said joint is not accepted.

Remark 3: If both the joining materials are having different P nos. then the said joint is not accepted.

Thanks & Regards

Hiren Sevak

On Mon, Sep 10, 2012 at 6:15 PM, Tariq Hussain <tariqhussain632@gmail.com> wrote:

Dear All,

Please advise whether A WPS qualified per ASME Sec IX. with PQR Thickness 20mm, can be used for below Joint as shown below, with dissimilar thickness of 92mm and 30mm? As shown in below figure.

Kindly Give Sec, IX clasue reference if possible.

--
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Re: [MW:19403] Copper Welding

Use Helium as a shielding gas because, risk of oxide entrapment in the weld pool is greatly reduced

and provides deeper penetration.

Preheating of the base metal is typically required to maintain the base metal at welding temperatures

without preheating, the high thermal conductivity of copper results in excessive loss of heat away from the

weld zone.

On 29 November 2013 14:46, Avis <aviss2000@gmail.com> wrote:

Dear All,

Anybody having experience is copper welding. If yes please share your difficultites, and also welder availablity for the welding.

The base materials is ASTM B42 UNS C12200 (Cu - 99.9%)

P. No. is 31, SFA - A5.7, F. No. 31.

Filler Wire Class - ER Cu Sn 1

With regards,
S. Sivasubramanian, Kuwait.

[MW:19401] Copper Welding

Dear All,

Anybody having experience is copper welding. If yes please share your difficultites, and also welder availablity for the welding.

The base materials is ASTM B42 UNS C12200 (Cu - 99.9%)

P. No. is 31, SFA - A5.7, F. No. 31.

Filler Wire Class - ER Cu Sn 1

With regards,

S. Sivasubramanian, Kuwait.

[MW:19400] Duplex Stainless Steel: Metallurgy, engineering codes & welding practices

Congratulations Mr Pradip Goswami for the article in current issue of SSW

By Ramesh Bapat, Senior Principal Engineer, Foster Wheeler Upstream & Pradip Goswami, P. Eng., IWE, Welding and Metallurgical Specialist - Ontario, Canada

Re: [MW:19401] Cutting & Grinding Disc Composition

considering the new discs, there is no problem of contamination, the problem of discs made to CS is that they are not suitable for the hardness and strenght of the SS, and thus becomes more expensive and less productive.

On Nov 28, 2013 1:34 PM, "Richard robes" <mech.processes@gmail.com> wrote:

Dear Gents,

Please comment regarding the issue,
What is the composition of SS and CS Cutting & Grinding wheels? Is there any problem if we use Cutting wheel marked as for CS in SS Piping material? Is there any material that can cause contamination and rust in SS piping if we use CS cutting / grinding wheel?

Regards
Richard

--
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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.
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Re: [MW:19398] Cutting & Grinding Disc Composition

CS grinding disc made of Silicon Carbide Si2C3 which prone to carbon contaminant to SS, while SS disc made of Aluminium Oxide Al2O3 that no worry to carbon contaminant

Regards,

Yan

From: hany alfy <hanyon_alfy@yahoo.com>

Sender: materials-welding@googlegroups.com

Date: Thu, 28 Nov 2013 08:52:18 -0800 (PST)

To: materials-welding@googlegroups.com<materials-welding@googlegroups.com>

ReplyTo: materials-welding@googlegroups.com

Subject: Re: [MW:19396] Cutting & Grinding Disc Composition

you have to use the Discs for SS for SS works otherwise it will be contaminated by carbon and starr rust

The Difference is the same between CS and SS that is why the SS discs are expensive

Regards,
HA

Sent from Yahoo Mail on Android

From: Richard robes <mech.processes@gmail.com>;
To: <materials-welding@googlegroups.com>;
Subject: [MW:19395] Cutting & Grinding Disc Composition
Sent: Thu, Nov 28, 2013 1:04:03 PM

Dear Gents,

Please comment regarding the issue,

What is the composition of SS and CS Cutting & Grinding wheels? Is there any problem if we use Cutting wheel marked as for CS in SS Piping material? Is there any material that can cause contamination and rust in SS piping if we use CS cutting / grinding wheel?

Regards

Richard

Re: [MW:19399] Solution annealing /Physical Properties of Duplex Material.(Urgent)

Dear Experts,

Can anybody help me out for solution annealing heating cycle, shocking time (thickness 3.4 mm) procedure pipe fittings of Duplex materials like USN 31303, UNS 32750, UNS 32205, it is not clearly mentioned as per the applicable ASTM / ASME Codes.

And similarly we are facing problem of carbon steel pipe fittings at the time of Normalizing at 910 Deg. C the big diameters and 14 mm thk. materials after the Normalizing process the fittings like elbow shapes are collapsing the diameter and diameter shape changing drastically.

In view of anybody can help me out for the Normalizing procedure for heating cycle & shocking time to eliminate this frequent problems.

D.Dattatreya

On Wednesday, January 9, 2013 3:49 PM, Ashish Pathrabe <darkash6633@gmail.com> wrote:

Dear Amit,

Technically Virtuous :- I would Vote for:-

ON CASE B:-

Forging and solution annealing Will bring back the required Physical properties of the Metal (fulfill the Reduction an area) as required by the STD SA182Gr.F51

With Regards,

Ashish Pathrabe

On Tue, Jan 8, 2013 at 12:36 PM, Amit Udavant <amitudavant@gmail.com> wrote:

Dear Experts

This is with reference to the Duplex Samples tested at Elca Lab on 05/01/2013, witnessed by TPI.Kindly refer the Lab test report attached herewith.

We would like to draw your attention on the following:-

CASE A:

1) Sample no TP 01/Elca No:SC4517 Satisfies the all the test requirement (Chemical , physical) as per SA790 UNS32205 .

2) Sample no TP 02/Elca No:SC4518 Is drawn for the same lot as above mentioned sample No.TP01 ie The 25 NB Pipe was Drawn or cold-worked to achieve the size of 20 NB.On testing the same, the Sample failed in Elongation where as increase in the Yield Stress and U.T.S was observed.

we believe that the reduction in the elongation property must have been the effect of hardening due to cold working.

Can the Solution Annealing of pipe after drawing, bring back the required Physical property i.e. Elongation of the Metal (required is 25% Min),as it had shown in sample test for TP01/Elca No:SC4517.(Will the increase in elongation possible after Solution Annealing of the drawn Pipes?)

CASE B:

1) Sample no S 8015/Elca No:SC4520, 75Dia Bar, Satisfies the all the test requirement (Chemical , physical) as per SA182 Gr. F51.

2) Sample no S 8405/Elca No:SC4519, 110 Dia Bar satisfies all the requirements as per SA182Gr.F51 Except Reduction in Area.The Required Reduction in Area as per Grade is 45% at least and we have achieved 39.76%.

These Bar is raw material for the Forged Fittings and The Flanges therefore these bars will be undergoing the forging and Solution Annealing later on (Before Final machining.)

Can forging and solution annealing later on bring back the required Physical properties of the Metal (fulfill the Reduction an area) as required by the STD SA182Gr.F51

We request you to kindly look in to the matter and guide us in deciding whether to go ahead with the material or not. as the material is very scarcely available in the market we are left out with very lesser options.

In case of any query you ma call the undersigned.

Yours Faithfully

AMIT 9833859030

Yours faithfully,
Best Regards
Arvind G. Udavant
AMIT ENGINEERING WORKS
W-103 (A) KHARVAI M.I.DC.,
BADLAPUR (EAST) - 421 503,
DIST: THANE, MAHARASHTRA
+91 251 2698680/2691391

--
Warm Regards
amit --
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Materials & Welding

Saturday, November 30, 2013

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Re: [MW:19414] Copper Welding

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Re: [MW:19409] Cutting & Grinding Disc Composition

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Re: [MW:19403] Copper Welding

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