A672 C0 CL22 vs A106 Gr.b

[Rovshan Nabiyev]

Dears

Your advice is highly appreciated.

The point is I got TS from contractor asking to replace A672 C0 CL22 pipe to A106Gr.B. I know that both is Carbon steel. Type235.

So dont see any reason to reject but if anybody provide smart advise I would be very grateful.

Thank you ALL

[Richard robes]

Hi,

If you are replacing A672 pipe and using A106 Grade B, then there is no issue at all as A106 is seamless pipe where as A672 is fusion welded hence A106 is preferred than A672. And A106 is suitable for high temperature service where as A672 is only suitable for moderate temperatures, so you can surely go for A106 but viceversa needs approval from engineering department to ensure safe service.

Regards

Richard

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[Vineet]

Dear,
Plz confirm  the size of pipe because above 600 NB seamless pipe is not easily available in market.So confirm the size.

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From: Richard robes
Sent: ‎08-‎12-‎2013 13:34
To: material...@googlegroups.com
Subject: Re: [MW:19507] A672 C0 CL22 vs A106 Gr.b

[Rovshan Nabiyev]

Contractor want to change from A672 C60 CL22 to A106 Gr.B. 22".    Here is another question. Can we weld these two material?