Materials & Welding: September 2017

Saturday, September 30, 2017

[MW:26843] NUMBER OF WELDERS ESTIMATION / CALCULATION REQUIRED FOR ONE API 650 STORAGE TANK CONSTRUCTION??...HOW TO CALCULATE? AND ESTIMATE THE WELDERS FOR TANK?

please any one guide me

How to calculate the number of welders required for one tank construction?

Any hints for welders estimation for one tank???????............any one give hints

Any Procedure for the estimation of no of welders required to be calculated for one API 650 storage tank construction work?

Please share your ideas and

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[MW:26843] WPS FOR FILLET WELD

Dear All,

We have supply some fabrication parts to Australia,hence fillet weld is also need to qualify along with butt weld (As per Australian standard) for the procedure qualification.So I want to know that shall I merge both the joints in single WPS or else I have to make both separate.

Please suggest.

Regards,

Javed C

+91-8169668074

[MW:26843] Re: Impact test requirement for JO and JR grades in structural fabrication.

Dear Arvind,

Impact test is mandatory whenever ,there is lower service temperature,Grades you have specified might be impact tested by the mill,coz these grades are generally used for low service temperature.

On Saturday, September 10, 2011 at 1:10:54 PM UTC+5:30, arvinda wrote:

Dear Experts,

For crosshead installation in jetty project, the following materials (37mm) are used.

Road way            - S355JO

Crosshead           - S355JR & S275JR

Pipe track            - S355JR

As per European structural steel standard EN10025 , for JR grade, Longitudinal charpy V-notch impacts 27J @20 degrees and for JO grade, Longitudinal charpy V-notch impacts 27J @ 0 degrees.

We received materials mill certificates w/o impact test.

My question is whether impact is mandatory for above grades or any criteria of thickness as per EN10025? Please mention with reference codes.

Your valuable suggestions are appreciated.

Regards

arvinda

Friday, September 29, 2017

[MW:26843] Using ER308 for 316 pipe welding

Dear experts,

According to ASME IX & B31.3 , Can we use ER308 for welding of SS316 pipe?

Thanks in advance.

Gigi

Thursday, September 28, 2017

Re: [MW:26843] SR equirement for Heads

3000 dia
Ellipsoidal dish

On 28 Sep 2017 07:47, "Amit Udavant" <amitudavant@gmail.com> wrote:

What are the diameters and what types of heads they are?

On 26-Sep-2017 9:19 PM, "Pankaj Kolhe" <pankaj.kolhe15@gmail.com> wrote:
Dear Experts,

AS per IL spec.all cold formed heads need to be stress relieved.
we have 6mm,10mm,12mm,16mm & 20 mm thk dish end in our job.

so my question is shall i do SR for all thickness dish end or how to proceed.

MOC 516-70

pankaj

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Re: [MW:26843] SR equirement for Heads

As per code it is not reqd but EIL spec says.
What to follow

On 28 Sep 2017 07:47, "Vijay Patre" <vijay.patre09@gmail.com> wrote:

as per recommended practice sr shall be followed for 16 & 20mm thick head, for others pls check fibre elongation...

however, as per code all cold formed dish end shall be heat treated.

On Sep 26, 2017 9:19 PM, "Pankaj Kolhe" <pankaj.kolhe15@gmail.com> wrote:
Dear Experts,

AS per IL spec.all cold formed heads need to be stress relieved.
we have 6mm,10mm,12mm,16mm & 20 mm thk dish end in our job.

so my question is shall i do SR for all thickness dish end or how to proceed.

MOC 516-70

pankaj

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Re: [MW:26843] SR equirement for Heads

Nothing is mentioned in GA.
Buy EIL spec says SR is reqd. For below 16 mm and NR for above 16mm.
As per code checked but fibre el. Is below 5%

On 28 Sep 2017 07:47, "PREM SHANKARDUTT NAUTIYAL" <prem_nautiyal@rediffmail.com> wrote:

Follow the heat treatment data written in your approved GA drawings.

PREM S NAUTIYAL

CELL : 9769316004

From: Pankaj Kolhe <pankaj.kolhe15@gmail.com>
Sent: Tue, 26 Sep 2017 21:19:03
To: materials-welding <materials-welding@googlegroups.com>
Subject: [MW:26837] SR equirement for Heads

Dear Experts,

AS per IL spec.all cold formed heads need to be stress relieved.
we have 6mm,10mm,12mm,16mm & 20 mm thk dish end in our job.

so my question is shall i do SR for all thickness dish end or how to proceed.

MOC 516-70

pankaj

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RE: [MW:26843] regareding taper burning of electrode

Dear Friend and Expert

Regarding to Radiographic Testing (RT) of weld

1) Does any codes / stands mentioned how to selection of film type/class like carbon steel and stainless steel?

2) On the heavy wall thickness plat 70 mm (Sphere Tank) welded by SMAW testing by PAUT were found a lot of defects but re-test by RT Ir-192 doesn't found any things, Any opinions to recommend

Thanks and Best Regards

Suchin Katavut

From: prem_nautiyal@rediffmail.com [mailto:prem_nautiyal@rediffmail.com]
Sent: Thursday, September 28, 2017 12:44 AM
To: materials-welding@googlegroups.com
Subject: Re: [MW:26838] regareding taper burning of electrode

Its manufacturing defect of consumable manufacturer.

Please tell your consumable manufacturer to replace the defective batch.

PREM S NAUTIYAL
CELL : 9769316004

From: Perumal Govindan <perumalgovindan@gmail.com>
Sent: Tue, 26 Sep 2017 11:32:54
To: materials-welding@googlegroups.com
Subject: Re: [MW:26836] regareding taper burning of electrode

I believe it's due to non concentric flux coating of electrodes. It's a manufacturing defect.

Take few electrodes from the pocket inspect visually and measure it's flux coating thickness through vernier caliper and you will find uninformed coating.

Regards
P Govindan

On Sep 26, 2017 08:10, "akshay" <akshaykulkarni.ak21@gmail.com> wrote:

when we starts welding the electrodes starts burning in taper shape please suggest improvement and reason behind it how i can overcome this problem

Wednesday, September 27, 2017

Re: [MW:26838] SR equirement for Heads

Follow the heat treatment data written in your approved GA drawings.

PREM S NAUTIYAL

CELL : 9769316004

From: Pankaj Kolhe <pankaj.kolhe15@gmail.com>
Sent: Tue, 26 Sep 2017 21:19:03
To: materials-welding <materials-welding@googlegroups.com>
Subject: [MW:26837] SR equirement for Heads

Dear Experts,

AS per IL spec.all cold formed heads need to be stress relieved.

we have 6mm,10mm,12mm,16mm & 20 mm thk dish end in our job.

so my question is shall i do SR for all thickness dish end or how to proceed.

MOC 516-70

pankaj

Re: [MW:26838] regareding taper burning of electrode

I believe it's due to non concentric flux coating of electrodes. It's a manufacturing defect.

Take few electrodes from the pocket inspect visually and measure it's flux coating thickness through vernier caliper and you will find uninformed coating.

Regards
P Govindan

On Sep 26, 2017 08:10, "akshay" <akshaykulkarni.ak21@gmail.com> wrote:

when we starts welding the electrodes starts burning in taper shape please suggest improvement and reason behind it how i can overcome this problem

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Re: [MW:26838] Impact test requirement for JO and JR grades in structural fabrication.

in which specification it is mention about thickness > 6mm ,

On Saturday, 10 September 2011 19:15:33 UTC+4, Harish wrote:

Impact test is mandatory for t>6mm, if the material is going for low temperature service.

2011/9/10 arvinda shan <arvin...@gmail.com>

Dear Experts,

For crosshead installation in jetty project, the following materials (37mm) are used.

Road way            - S355JO

Crosshead           - S355JR & S275JR

Pipe track            - S355JR

As per European structural steel standard EN10025 , for JR grade, Longitudinal charpy V-notch impacts 27J @20 degrees and for JO grade, Longitudinal charpy V-notch impacts 27J @ 0 degrees.

We received materials mill certificates w/o impact test.

My question is whether impact is mandatory for above grades or any criteria of thickness as per EN10025? Please mention with reference codes.

Your valuable suggestions are appreciated.

Regards

arvinda

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regards,

Harish.

Re: [MW:26838] SR equirement for Heads

as per recommended practice sr shall be followed for 16 & 20mm thick head, for others pls check fibre elongation...

however, as per code all cold formed dish end shall be heat treated.

On Sep 26, 2017 9:19 PM, "Pankaj Kolhe" <pankaj.kolhe15@gmail.com> wrote:

Dear Experts,

AS per IL spec.all cold formed heads need to be stress relieved.
we have 6mm,10mm,12mm,16mm & 20 mm thk dish end in our job.

so my question is shall i do SR for all thickness dish end or how to proceed.

MOC 516-70

pankaj

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Tuesday, September 26, 2017

Re: [MW:26838] SR equirement for Heads

What are the diameters and what types of heads they are?

On 26-Sep-2017 9:19 PM, "Pankaj Kolhe" <pankaj.kolhe15@gmail.com> wrote:

Dear Experts,

AS per IL spec.all cold formed heads need to be stress relieved.
we have 6mm,10mm,12mm,16mm & 20 mm thk dish end in our job.

so my question is shall i do SR for all thickness dish end or how to proceed.

MOC 516-70

pankaj

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[MW:26837] SR equirement for Heads

Dear Experts,

AS per IL spec.all cold formed heads need to be stress relieved.

we have 6mm,10mm,12mm,16mm & 20 mm thk dish end in our job.

so my question is shall i do SR for all thickness dish end or how to proceed.

MOC 516-70

pankaj

Re: [MW:26836] regareding taper burning of electrode

I believe it's due to non concentric flux coating of electrodes. It's a manufacturing defect.

Take few electrodes from the pocket inspect visually and measure it's flux coating thickness through vernier caliper and you will find uninformed coating.

Regards
P Govindan

On Sep 26, 2017 08:10, "akshay" <akshaykulkarni.ak21@gmail.com> wrote:

when we starts welding the electrodes starts burning in taper shape please suggest improvement and reason behind it how i can overcome this problem

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Monday, September 25, 2017

[MW:26830] QW 200.4

Gents,

I have two PQRs for 10mm and 38mm of GTAW+FCAW process.

I believe, i can prepare the WPS using the above PQRs for FCAW for Single V (w/ backing strip) and Double V (with back gouging) for the max thickness range of 1.5 to 200mm.

Please share your information.

Sunday, September 24, 2017

[MW:26830] regareding taper burning of electrode

when we starts welding the electrodes starts burning in taper shape please suggest improvement and reason behind it how i can overcome this problem

Re: [MW:26830] SA 335 P91 preheat pwht conditions and variables

Asme B 31.1

On Sep 23, 2017 7:14 AM, "me_ahmd" <mehfil4all@gmail.com> wrote:

Dear friends,
Could anyone please guide me with codes and standards with respect to welding of SA 335 P91 pipes for high pressure and temperature boiler lines,

Looking forward for your contribution.

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Saturday, September 23, 2017

Re: [MW:26830] Welding consumables requirement as per NACE MR0175 for carbon steels

Please share the welding consumable test certificates and Client welding specification for further review.

Regards

P Govindan

With Kind Regards

P Govindan

On Thu, Sep 21, 2017 at 8:29 AM, Ankur <ankurpandey25@gmail.com> wrote:

Dear All,

Welding consumables manufacturer [ER70S-2 & ER70S-6] has not stated in TC's that material complies to NACE MR0175 or not. As per my knowledge requirement as per NACE is

The welding consumable shall produce weld Zones meeting Hardness requirement of 250HV10. The Nickel in the welding consumable shall be less than 1%. Welding consumables and procedures that produce a deposit containing more than 1% nickel are acceptable after successful weld SSC qualification by testing in accordance with Annex B.

Also I would like to understand meaning of this line Welding consumables and procedures that produce a deposit containing more than 1% nickel are acceptable after successful weld SSC qualification by testing in accordance with Annex B.

Does that mean that if nickel is less than 1% [ 0.023% in my case] then I do not require any test as per Annex B of NACE and only carry out Hardness test and if its less than 250HV10 then its acceptable?

How can I satisfy my client that consumables available with me is NACE compliant

Regards,
Ankur
ankurpandey25@gmail.com
7990344780

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Re: [MW:26830] SA 335 P91 preheat pwht conditions and variables

Please refer Client specifications for welding or ASME Section IX latest edition

Regards

P Govindan

With Kind Regards

P Govindan

On Fri, Sep 22, 2017 at 10:39 PM, me_ahmd <mehfil4all@gmail.com> wrote:

Dear friends,
Could anyone please guide me with codes and standards with respect to welding of SA 335 P91 pipes for high pressure and temperature boiler lines,

Looking forward for your contribution.

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Re: [MW:26830] Preheat calculation for pipelines

Please let me the know the exact material specification and chemical properties

Regards

PGovindan

With Kind Regards

P Govindan

On Fri, Sep 22, 2017 at 9:15 PM, TDK YOKESH <tdky167@gmail.com> wrote:

Hello expert ,

How to calculate preheat required for pipeline welding ? EN 1011-2 helps you to calculate . But what values to be used for Heat input ? And which graph do I refer? I use GTAW + SMAW , also automatic GMAW I have thickness from 16.22 to max of 50.2mm .

Thanks in Advance

TDK Yokesh

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[MW:26828] SA 335 P91 preheat pwht conditions and variables

Dear friends,
Could anyone please guide me with codes and standards with respect to welding of SA 335 P91 pipes for high pressure and temperature boiler lines,

Looking forward for your contribution.

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Friday, September 22, 2017

[MW:26828] Preheat calculation for pipelines

Hello expert ,

How to calculate preheat required for pipeline welding ? EN 1011-2 helps you to calculate . But what values to be used for Heat input ? And which graph do I refer? I use GTAW + SMAW , also automatic GMAW I have thickness from 16.22 to max of 50.2mm .

Thanks in Advance

TDK Yokesh

Thursday, September 21, 2017

[MW:26826] Welding consumables requirement as per NACE MR0175 for carbon steels

Dear All,

Welding consumables manufacturer [ER70S-2 & ER70S-6] has not stated in TC's that material complies to NACE MR0175 or not. As per my knowledge requirement as per NACE is

The welding consumable shall produce weld Zones meeting Hardness requirement of 250HV10. The Nickel in the welding consumable shall be less than 1%. Welding consumables and procedures that produce a deposit containing more than 1% nickel are acceptable after successful weld SSC qualification by testing in accordance with Annex B.

Also I would like to understand meaning of this line Welding consumables and procedures that produce a deposit containing more than 1% nickel are acceptable after successful weld SSC qualification by testing in accordance with Annex B.

Does that mean that if nickel is less than 1% [ 0.023% in my case] then I do not require any test as per Annex B of NACE and only carry out Hardness test and if its less than 250HV10 then its acceptable?

How can I satisfy my client that consumables available with me is NACE compliant

Regards,

Ankur

ankurpandey25@gmail.com

7990344780

[MW:26826] Re: special requierment in NACE electrode

Dear James,

Your reply on subject was really helpful. I just wanted to discuss a case of NACE MR0175

Suppose if Welding wire manufacturer (ER70S-2 & ER70S-6) has not specified any NACE compliance in MTC and if weld Zones meeting Hardness requirement of 250HV10 then does that STILL mean that we comply NACE requirements?

Also I would like to understand more of this statement; Welding consumables and procedures that produce a deposit containing more than 1% nickel are acceptable after successful weld SSC qualification by testing in accordance with Annex B. But what if Nickel is less than 1%? Does that mean that SSC is not required if Nickel is less than 1% ?

Would love to hear from you

Regards,

Ankur

7990344780

ankurpandey25@gmail.com
On Tuesday, February 8, 2011 at 10:41:08 PM UTC+5:30, viral talati wrote:

Dear Friends,
Is there any special requierment for electrode used for NACE material welding.
regards

Wednesday, September 20, 2017

Re: [MW:26824] Weld overlay shrinkage calculation.

Hi,Friend

There is no ready made formula for shrinkage calculation for ESSC weld overlay in ID of shell but shrinkage assumption is on the basis of experience and data recorded

Shrinkage depends upon Thickness of the base metal, Strip size i.e. 30,60,90 mm width,used

Current used etc

Generaly lower width with lower thickness of base metal and higher ID of a shell will have more shrinkage than Higher thk base metal with higher width strip used

You will find more shrinkage for a thickness of 50mm -100mm thk shell with ID above 2.5mtr than >100mm thk shell

My experience of shrinkage allowance is about 2.5/ 3mm/meter you take circumstantially or In other word ID will contract /shrink about 3mm/mtr in dia

Regards

Hegde Prakash

On Wednesday, 20 September 2017 12:16 PM, 'Thaksen Ingole' via Materials & Welding <materials-welding@googlegroups.com> wrote:

Dear Members,

I would like to know how to calculate the weld overlay shrinkage. For eg. We are performing a weld overlay of SS 347 on SA-387 11 2 plates with an ESW process. The weld overlay will be done after the plate is rolled. The ID of the plate is 2500mm. So what shall be the rolled ID prior to weld overlay so that after weld overlay the ID shall not be less than 2500. If its slightly bigger that would be acceptable but should not be too big else we shall waste time and material.

Could someone guide me to know the formula for the weld shrinkage of the weld overlay.

Thanks and Regards

Re: [MW:26824] SAIL HARD WPS

Thanq sir,

what will be the filler wire in GMAW process

On Wed, Sep 20, 2017 at 1:17 PM, Kannayeram Gnanapandithan <kgpandithan@gmail.com> wrote:

yes, u have to do new pqr

THANKS & BEST REGARDS,
KG.PANDITHAN, IWE, AWS-CWI, CSWIP 3.1,
CONSULTANT-WELDING & QUALITY
Mobile no: +919940739349

On Wed, Sep 20, 2017 at 12:50 PM, CKML <chaitanyakamal@gmail.com> wrote:
HI

I had Query regarding SAIL HARD /JSP HARD WPS .Is any mandatory to make another WPS for these materials,already i have a WPS of E-250 Gr.B material.

As Per ASME SECIX based on Essential Variable Wps to be generated or not.

Kindly give the techanical why WPS required.

Regards
CHAITANYA KAMAL.S

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chaitanya kamal.s

Re: [MW:26823] SAIL HARD WPS

yes, u have to do new pqr

THANKS & BEST REGARDS,

KG.PANDITHAN, IWE, AWS-CWI, CSWIP 3.1,

CONSULTANT-WELDING & QUALITY

Mobile no: +919940739349

On Wed, Sep 20, 2017 at 12:50 PM, CKML <chaitanyakamal@gmail.com> wrote:

HI

I had Query regarding SAIL HARD /JSP HARD WPS .Is any mandatory to make another WPS for these materials,already i have a WPS of E-250 Gr.B material.

As Per ASME SECIX based on Essential Variable Wps to be generated or not.

Kindly give the techanical why WPS required.

Regards
CHAITANYA KAMAL.S

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[MW:26822] SAIL HARD WPS

I had Query regarding SAIL HARD /JSP HARD WPS .Is any mandatory to make another WPS for these materials,already i have a WPS of E-250 Gr.B material.

As Per ASME SECIX based on Essential Variable Wps to be generated or not.

Kindly give the techanical why WPS required.

Regards

CHAITANYA KAMAL.S

[MW:26821] Weld overlay shrinkage calculation.

Dear Members,

Could someone guide me to know the formula for the weld shrinkage of the weld overlay.

Thanks and Regards

Wednesday, September 13, 2017

Re: [MW:26819] Acceptance Criteria

For Steel structural items you can propose NDT as per AWS D1.1. Acceptance criterias are given for all NDT.

On Fri, Sep 8, 2017 at 7:56 AM, Vijay Joshi <hivijay1970@gmail.com> wrote:

Friends,
Many time for some odd jobs, we find the contractor is not clear on what is acceptable when NDT is conducted.
For example, we had to UT some welds on a repaired columns of a gantry crane.
There was no reference Code of construction.
Therefore, will you please help me in knowing what Codes are applicable to what type of jobs and what is their respective acc criteria references?
Thanks,
Vijay

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Re: [MW:26816] VALIDATION OF THE WELDING PROCESS FOR THE HARD FACING AND SEAT RING OF THE GATE VALVES

Dear Friend,

For validation of welding WPS and PQR is sufficient.
if the client is asking the process of validation you have to submit the trial records of WPS like proposed WPS and its records. The trial record should contain the parameters of welding and consumables process considering welder and equipment are qualified. this records may be supplied until the aimed result is obtained.

For Ex:
Trial No       parameters     consumables            result                           remark
1                  xxxxxxxx          xxxxxxxxxx          Not satisfactory                  xxxxx
2                  xxxxxxxx              xxxxxxxx          Satisfactory                          xxxx

Regards,

Anosh Wankhade

From: "Nachhattar Singh" <nachhattar1947@gmail.com>
Sent: Thu, 31 Aug 2017 11:36:49
To: <materials-welding@googlegroups.com>
Subject: [MW:26775] VALIDATION OF THE WELDING PROCESS FOR THE HARD FACING AND SEAT RING OF THE GATE VALVES

Dear Experts

I am required to submit to the client as to how the “VALIDATION OF THE WELDING PROCESS FOR

THE HARD FACING AND SEAT RING WELDING OF THE GATE VALVES” will be done. Following has already

Been complied and submitted but the client wants some more to be done:-

01. WPS is accepted as submitted.

02. PQR based on the WPS is in place and accepted.

03. Heat treatment is not the requirement.

Please advise what else should be done, give the reference of such requirements.

Thanks in advance

NS Gurm

PLEASE THINK BEFORE PRINTING

[MW:26816] welder qualification API 1104

Dear

find the welder qualification Requirements as follows

Welding Procedure and Welder Qualification coupon SET-UP:

Welder Qualification:

A welder qualified on pipe having an OD of greater than or equal to 12.750 in. (323.9 mm) should be qualified for all pipe diameters. A welder who has an existing Unlimited Thickness qualification to ASME-IX and an in-service qualification as per Fig. above to the 2 pipe thickness as stated in the table below, should be qualified as an in-service branch or sleeve welder for Horizontal Pipe positions, all diameters, and all wall thicknesses.

Hot Tap Welder Performance Coupon Requirement for Qualifying 2 Welders
ITEM DESCRIPTION	CARRIER PIPE	SPLIT SLEEVE
T upon 19.1mm	12" SCH 40 (10.3mm) X 600mm LONG	14" SCH – XS (12.07mm) X 200mm LONG
T > 19.1mm	12" SCH 40 (10.3mm) X 600mm LONG	14" SCH – 100 (23.83mm) X 200mm LONG

Note:If the welders Qualified on thickness more than 19.1mm, will qualified to weld unlimited thickness can be Utilized for future projects

Welder Qualification