Monday, March 14, 2011

Re: [MW:10346] pqr api 1104

Dear Bharathi,
 
Plz check Appendix A3.1 Clause P,which says a change more than -0.25D and +0.5D is an essential variable.
 
So as per above clause if ur PQR material is 20" Dia,then u cannot use it on 10" pipe.Ur range will be 15" to 30".
 
Any comments welcome from other friends.
 
Regards,
MAZ 

--- On Sun, 13/3/11, muthu barathi <muthu_barathi@rediffmail.com> wrote:

From: muthu barathi <muthu_barathi@rediffmail.com>
Subject: Re: [MW:10310] pqr api 1104
To: "materials-welding@googlegroups.com" <materials-welding@googlegroups.com>
Date: Sunday, 13 March, 2011, 2:21 PM



Dear Sir,

You may please refer Table 2 of API 1104 and from this table you may find diameter range and wall thickness range. you mentioned only dia and not wall thk. if the wall thk is as 20" dia  or with in 0.5" you may use the same PQR.



Thanking You,

Honesty is the best Policy

With Warm Regards,

Muthu Barathi P
Mobile No:00962788269821 (Jordan)
00962775401951

On Sat, 12 Mar 2011 21:44:08 +0530 vijay kumar <vijaykumaar80@gmail.com> wrote
>Dear All,
>
>i have a pqr 20" thk 11.91 mm as per api1104 ,for the production weld
>we can apply this to 10" pipe of same grade material.
>
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