Re: [MW:24366] Flange Buttering

It's for butt joint what about flange inside buttering to reduce gap between pipe and flange (slip on flange ) ...

There is any heat treatment required for flanges

Thanks for your reply

Best regards

Sankar

On Tuesday, February 23, 2016, Jim Price <JimPrice@polarcorp.com> wrote:

Please see UW 42 of ASME Section VIII Div 1. A butt welding procedure is enough for buttering.

UW-42 SURFACE WELD METAL BUILDUP
Construction in which deposits of weld metal are applied to the surface of base metal for the purpose of:
(a) restoring the thickness of the base metal for strength consideration; or
(b) modifying the configuration of weld joints in order to provide the tapered transition requirements of UW-9(c)
and UW-33(b) shall be performed in accordance with the following rules:
(1) A butt welding procedure qualification in accordance with provisions of Section IX must be performed for
the thickness of weld metal deposited, prior to production welding.
(2) All weld metal buildup must be examined over the full surface of the deposit by either magnetic particle
examination to the requirements of Appendix 6, or by liquid penetrant examination to the requirements of Appendix 8.
When such surface weld metal buildup is used in welded joints which require full or spot radiographic examination,
the weld metal buildup shall be included in the examination.

Reference Appendix 6 Section VIII Div 1

Buildup QW202.3

Thickness QW451.1

Best Regards

Jim Price | Welding Engineer, CWI

Direct: 320.7463439 | Fax: 417-862-5564

jimprice@polarcorp.com

From: materials-welding@googlegroups.com [mailto:materials-welding@googlegroups.com] On Behalf Of sankar krishnan
Sent: Monday, February 22, 2016 11:38 PM
To: Materials & Welding
Subject: [MW:24361] Flange Buttering

Dear All,

In my project Slip on flange to Pipe We have 7 mm gap .. Pipe have ovality

Now my client saying to us to do buttering at flange at machining

If we do buttering at flange its allowed in the code book

Please guide me

Best regards

Sankar.k

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