Skip to main content

[MW:13209] RE: 13205] RE: 13203] Tack welder qualification

By Materials & Welding

 

As per AWS D1.1, we have provision and can qualify. But finally Customer spec will govern.

 

 

With Kind Regards,

 

S.Elumalai.

-----Original Message-----
From: materials-welding@googlegroups.com [mailto:materials-welding@googlegroups.com] On Behalf Of Lakshman Kumar.B
Sent: Wednesday, December 14, 2011 6:25 AM
To: materials-welding@googlegroups.com
Subject: [MW:13205] RE: 13203] Tack welder qualification

 

Hi dear,

 

Nowhere or any code didn’t specified for qualification method of a tack

welder.

 

Tack welding is also a welding and which it needs to be done by a 100%

qualified welder only and not having any short cut.

 

All the sub contractors are taking advantage by saying the name of tack

welder.

 

Thanks and Regards.................

 

Lakshman Kumar.B|Manager |Lanco Infratech Limited

Plot No 1255 | Sanjeevani chowk | Mahanadi vihar | Cuttack 753004

Phone : + 91 671 2445033 | Mobile : +91 9937286851 |www.lancogroup.com

Go Green|The future will thank you

 

 

 

-----Original Message-----

From: materials-welding@googlegroups.com

[mailto:materials-welding@googlegroups.com] On Behalf Of samshuddin k

Sent: Tuesday, December 13, 2011 10:19 PM

To: materials-welding

Subject: [MW:13203] Tack welder qualification

 

Dear Experts

There is any clause in ASME Sec. IX for tack welder qualification.

Which Code explains tack welder qualification for piping

regards

Samshuddin.K

 

--

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.

******************************************************************************************
CONFIDENTIALITY NOTICE
This e-mail and any attachment are confidential and may be privileged or otherwise protected from disclosure. It is solely intended for the person(s) named above. If you are not the intended recipient, any reading, use, disclosure, copying or distribution of all or parts of this e-mail or associated attachments is strictly prohibited. If you are not an intended recipient, please notify the sender immediately by replying to this message or by telephone and delete this e-mail and any attachments permanently from your system.

Comments

Post a Comment

Popular posts from this blog

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

By Materials & Welding
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...
Post a Comment
Read more

Materails FAQs

By Materials & Welding
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...
21 comments
Read more

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

By Materials & Welding
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...
Post a Comment
Read more