Skip to main content

Re: [MW:30134] Distance between two weld joint

By Materials & Welding
As per DIn EN 12952-5,(2012) 8.1.7. should be greater than 40mm

On Thu, 10 Oct 2019 11:27 am atul khatri, <atul.mnnit@gmail.com> wrote:
Dear Siva,
You must be aware that min. separation distance between two welds is to isolate there heat affected zone (HAZ).
HAZ depends on so many factors out of which thickness is the key one.
So as Mohsin and Adam suggested, these requirements are mainly guided by client's specifications based on their practical experiences or lesson learnt. 
So you could take gap between two welds as maximum between 50 mm (based on good engineering practice), twice the wall thickness of the thicker pressure part (As Adam advised) and 20 mm or three times the wall thickness of the joint (as Mohsin advised).
If you go with the above for sure you will not face any issue.
Also take note that if you are asking about the weld joints for piping spool, it will be good to have the minimum spool length as equal to pipe nominal diameter for 6" and above and for lesser size it should be 100 mm. 

Thanks

On Thu, Oct 10, 2019 at 8:44 AM mohsin tufail <mohsin6tufail@gmail.com> wrote:
reference aramco standard w-11 
11.1
The minimum distance between parallel butt welds shall be 20 mm or 
three times the wall thickness of the joint, whichever is greater

On Wed, Oct 9, 2019, 10:32 AM Adam Janzeer <adamjanzeer4@gmail.com> wrote:
Dear moshin

Based on which reference....

On Wed, Oct 9, 2019 at 9:18 AM mohsin tufail <mohsin6tufail@gmail.com> wrote:
20mm or three times of the wall thickness which is greater

On Fri, Oct 4, 2019, 2:19 PM siva Guru <dhanaguru2010@gmail.com> wrote:
Dear All
Can you advice, 
two weld  joint how much Min distance between weldjoints.
Please clarify, if possible please provide code reference.

Best regards

Guru

--
https://materials-welding.blogspot.com/
https://www.linkedin.com/groups/122787
---
You received this message because you are subscribed to the Google Groups "Materials & Welding" group.
To unsubscribe from this group and stop receiving emails from it, send an email to materials-welding+unsubscribe@googlegroups.com.
To view this discussion on the web visit https://groups.google.com/d/msgid/materials-welding/CAEDN%2BXFp1f7duhV4NFBmu_87QNzsuA877q4wDUTDuEOPTOM7eQ%40mail.gmail.com.

--
https://materials-welding.blogspot.com/
https://www.linkedin.com/groups/122787
---
You received this message because you are subscribed to the Google Groups "Materials & Welding" group.
To unsubscribe from this group and stop receiving emails from it, send an email to materials-welding+unsubscribe@googlegroups.com.
To view this discussion on the web visit https://groups.google.com/d/msgid/materials-welding/CADa_Lup61kGNBO2ZjNA-K9sXC5ia-qZwmKsX1dNcYHwdVa6tzg%40mail.gmail.com.

--
https://materials-welding.blogspot.com/
https://www.linkedin.com/groups/122787
---
You received this message because you are subscribed to the Google Groups "Materials & Welding" group.
To unsubscribe from this group and stop receiving emails from it, send an email to materials-welding+unsubscribe@googlegroups.com.
To view this discussion on the web visit https://groups.google.com/d/msgid/materials-welding/CAGKnWWjnnLYj%2B%3DnsHG-3SWmP3FYx0F8WXgbSNehb6iGEJLyi5g%40mail.gmail.com.

--
https://materials-welding.blogspot.com/
https://www.linkedin.com/groups/122787
---
You received this message because you are subscribed to the Google Groups "Materials & Welding" group.
To unsubscribe from this group and stop receiving emails from it, send an email to materials-welding+unsubscribe@googlegroups.com.
To view this discussion on the web visit https://groups.google.com/d/msgid/materials-welding/CADa_Luqyf0gQx678fZWLzsJuVXSz2kq%2BAX6t6uxwX1cw7bgCaA%40mail.gmail.com.

--
https://materials-welding.blogspot.com/
https://www.linkedin.com/groups/122787
---
You received this message because you are subscribed to the Google Groups "Materials & Welding" group.
To unsubscribe from this group and stop receiving emails from it, send an email to materials-welding+unsubscribe@googlegroups.com.
To view this discussion on the web visit https://groups.google.com/d/msgid/materials-welding/CACKOSeDLkY0c7Cmnz14cGOaNN5YYDGiXBHzSDf1MpUAhFCn%3DWg%40mail.gmail.com.

--
https://materials-welding.blogspot.com/
https://www.linkedin.com/groups/122787
---
You received this message because you are subscribed to the Google Groups "Materials & Welding" group.
To unsubscribe from this group and stop receiving emails from it, send an email to materials-welding+unsubscribe@googlegroups.com.
To view this discussion on the web visit https://groups.google.com/d/msgid/materials-welding/CAJzm4ePXnQPqWQ07WTbf0uy3HUHbQ-4swAef3sXxV1nBc8qV2Q%40mail.gmail.com.

Comments

Post a Comment

Popular posts from this blog

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

Re: [MW:10788] ON PLOT PIPING & OFF PLOT PIPING

By Materials & Welding
Piping systems involved for the flow lines and gathering lines from the well head isolation valve to the production facility or processing plant isolation valve are determined as OFF PLOT. ON PLOT defines piping system in the processing plant and production platform. ANSI/ASME B31.4 applies for off plot piping system. B31.4 allows the use of either API 1104 or ASME section IX (as appropriate). However, occasionally, a very small system such as piping within 500 feet of a processing plant (some client also said 400 feet) may be declared B31.3 rather than B31.4. When B31.3 is invoked, only ASME Section IX is used. before you decide which code to use for welding procedure and/or welder qualification for pipe welding, you have to know the design and construction code applicable to the system. Please read far enough into scope and diagram illustrating the application of either B31.3 and B31.4 hope this helps rgds 2011/4/21 pradip kumar sil < pradipsil@gmail.com > Dear all, ...
Post a Comment
Read more