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RE: [MW:29782] SA420 Gr. WPL6/SA234 Gr. WPB

By Materials & Welding
I think it was punch by mistake. 
No body manufacturer one product with dual spec. 

Regards 
A p gupta 
ThyssenKrupp 
Qc manager 


On Sat, 6 Jul 2019 at 9:20, U2L Poenya
<sulfiafdhal@gmail.com> wrote:

Thank's for your advice sir..

But, why the manufacture make the product with double spec in same of part

 

Thanks

 

 

SuLfi

 

Sent from Mail for Windows 10

 

From: anand gupta
Sent: Saturday, 6 July 2019 10:12 AM
To: materials-welding@googlegroups.com; Sulfi Afdhal; Materials & Welding
Subject: Re: [MW:29780] SA420 Gr. WPL6/SA234 Gr. WPB

 

WPB is for high temp and WPL6  is for low temp. 

You can not use. 

 

Regards 

 

A p gupta 

ThyssenKrupp 

Qc manager 

 

On Fri, 5 Jul 2019 at 19:36, Sulfi Afdhal

<sulfiafdhal@gmail.com> wrote:

Dear

 

I have a question about my Inspection Certificate of pipe fitting.

We order of material for low temperature ASTM A420 Gr. WPL6.

But, in hard stamp and certificate is "WPL6/WPB" (Attached)

Where i know, for WPB is ASTM A234.

what is the product can used for Low Temperature Service -45degree Celcius???

and if true, any one know reference from standard ASTM???

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