Distance between two butt joints in pipe weld

[pradip kumar sil]

Dear exparts,

As per ASME B  31.3 what is the minium spacing to be maintened between two butt weld in pipe & where is it mentioned

Is it three times of thickness or 25 m.m  whichever is greater.

Regards

Pradip

[iulian oprea]

 

Linde Engineering standards says:

 

5 time of thickness, or 50 mm, whichever is greater.

 

regards

Iulian Oprea

From: pradip kumar sil <prad...@gmail.com>
To: material...@googlegroups.com
Sent: Friday, September 9, 2011 7:23 AM
Subject: [MW:12383] Distance between two butt joints in pipe weld

Pradip --
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[tong tong]

B31.3 is silent about that..so you need to refer back to project or client specification..some of client specify 2x or 50mm..

[muthu barathi]

THATS ALL CORRECT BUT THINK PRACTICALLY suppose for diameter of pipe
thickness is 10mm and dia meter 1000mm . here if you apply this rule and going
to weld with 50mm distance ? what will happen to the piece? it will twist and
uneven shape and you may not be in a position to weld. do u agree. ok to avoid
this it is better go for at leas one dia length for good engineering practice
and avoid rework.

On Sat, 10 Sep 2011 13:58:16 +0530 wrote

>B31.3 is silent about that..so you need to refer back to project or client
specification..some of client specify 2x or 50mm..

On Fri, Sep 9, 2011 at 2:33 PM, iulian oprea wrote:


�Linde Engineering standards says:�5 time of thickness, or 50 mm, whichever is
greater.�regards
Iulian Oprea

From: pradip kumar sil
To:
material...@googlegroups.com
Sent: Friday, September 9, 2011 7:23 AM
Subject: [MW:12383] Distance between two butt joints in pipe weld


Dear exparts,
As per ASME B� 31.3 what is the minium spacing to be maintened between two
butt weld in pipe & where is it mentioned
Is it three times of thickness or 25 m.m� whichever is greater.
RegardsPradip



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Dear Sir,





Thanking You,

Honesty is the best Policy

With Warm Regards,

Muthu Barathi P
Mobile No:00962788269821 (Jordan)
00962775401951

Treat yourself at a restaurant, spa, resort and much more with Rediff Deal ho jaye!

[mpk mpk]

Dear,

 

Please find attached copies.

 

Thank you

MPK

[tong tong]

hi..
from asme code case

Interpretation:  B31.3-7-02
Subject:         B31.3-1987, Paras.  304.3.3 and
                 328; Spacing of Welds
Date Issued:     May 24, 1988
File:            B31-87-039

Question:  In accordance with B31.3, are there
requirements or guidelines on the minimum distance
between welds in a pipe?

Reply:  No, except as provided in paragraph
304.3.3(e).

Regards

[Pieper QSI]

Dear Sir(@MPK),

 

The copy’s you send mentions requirements for spacing between longitudinal welds, Mr. Pradip is asking for spacing between butt welds in pipe so in my opinion he’s talking about circumferential welds!

 

Met vriendelijke groeten / Best Regards

 

Herman Pieper

 

Pieper Quality Support & Inspection

Phone: +31 (0)521 380083

Fax:     +31 (0)84 7539225

Cell:     +31 (0)6 51691215

www.pieper-qsi.nl