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[MW:2232] Re: 2225] min and max accepted resiual magnetisum

By Materials & Welding
Rajeev,
Anything in excess of 6 gauss residual magnetism is known to cause problems in welding
such as arc blow.
Rgds,
Shashank Vagal


--- On Sat, 23/5/09, Pablo Acelajado <pjacelajado@npc.com.sa> wrote:

From: Pablo Acelajado <pjacelajado@npc.com.sa>
Subject: [MW:2230] RE: 2225] min and max accepted resiual magnetisum
To: materials-welding@googlegroups.com
Date: Saturday, 23 May, 2009, 2:07 PM

May 23, 2009

 

Dear Rajeev Arora,

 

You must be referring to manganese not magnesium since there is no range or max. for magnesium in API 5L Gr. 70.

 

For Manganese, the range depends on what type of pipe and what WT is involved or whether Seamless, Welded, PSL 1, or PSL 2. For safety you may have a limit of up to 1.4% max for seamless pipe unless otherwise agreed or it could go up to 1.8% for other types. You need to say the type and WT.

 

PJA

 

SAVE TREES  - THINK BEFORE YOU PRINT

From: materials-welding@googlegroups.com [mailto: materials-welding@googlegroups.com ] On Behalf Of rajeev arora
Sent: Friday, May 22, 2009 11:33 AM
To: materials-welding@googlegroups.com
Subject: [MW:2225] min and max accepted resiual magnetisum

 

Dear All,

 

Please give some reference of the max. or range of acceptance of megnetisum in line pipe of API 5L Gr 70.

 

Reagrds

 

Rajeev Arora


--
Regards

Rajeev Arora




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