[MW:28567] Re: Why Using external clamp and internal clamp is essential variable in API-1104.

Please refer API 1104, Clause 5.4, where it is not an essential variable for procedure qualification. However, restrictions are applied in case used, to have a sufficient load bearing weld length before removal of the clamps.

In construction, its becomes compulsory to use clamps for the pipe alignment to achieve

1. higher productivity

2. Improved quality control

3. Elimination of safety hazards

4. Eliminate tack welds which might occurs adjacent to weld area (commonly happen on site work to achieve fit-up even though its not permitted).

Also, the pipe diameters used in cross country pipelines can be from 20 inch to 50 inch where manual activities becomes unsafe and unproductive.

Thanks & regards

Sandeep Kumar

On Friday, November 2, 2018 at 8:03:32 AM UTC+3, Mohd Siraj wrote:

Why Using external clamp and internal clamp is essential variable in API-1104?

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Subject: [MW:28547] Digest for material...@googlegroups.com - 4 updates in 3 topics
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• [MW:28533] Branch PWHT - Control Thickness - 1 Update
• [MW:28467] Re: Query About WPS - 2 Updates
• [MW:28533] Fw: Fw: Back Purging for fillet welds - 1 Update

[MW:28533] Branch PWHT - Control Thickness

Hareesh K V <haree...@gmail.com>: Nov 01 02:05PM +0530 In (2)also the branch joint with mother pipe is a pressure joint and the pad is a non pressure part. So can the joint between mother and branch pipe be considered for PWHT thickness?   Is there any interpretations available.   Regards,   Hareesh K V 8547859202

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[MW:28467] Re: Query About WPS

Hasin Shaikh <hasin....@gmail.com>: Nov 01 08:28AM +0200 Thanks   Is it ok if we use in backing first Run with SMAW AND further subsequent Saw weld?   Can you provide me any clause of sec-9 acceptance or non acceptance. Regards   On Mon, 22 Oct 2018 at 8:32 AM, sandeep kumar <sandeep...@gmail.com> wrote:     -- Hasin Shaikh +91-9924562942

Kannayeram Gnanapandithan <kgpan...@gmail.com>: Nov 01 12:32PM +0530 2layer, better minimum 6mm smaw THANKS & BEST REGARDS, KG.PANDITHAN, BE, IWE, CSWIP 3.1, ASNT-Level II in PT,MT,RT & UT. International Welding Engineer. CONSULTANT-WELDING & QUALITY Mobile no: +919940739349

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[MW:28533] Fw: Fw: Back Purging for fillet welds

Kannayeram Gnanapandithan <kgpan...@gmail.com>: Nov 01 10:43AM +0530 not require for fillet weld. THANKS & BEST REGARDS, KG.PANDITHAN, BE, IWE, CSWIP 3.1, ASNT-Level II in PT,MT,RT & UT. International Welding Engineer. CONSULTANT-WELDING & QUALITY Mobile no: +919940739349     On Thu, Nov 1, 2018 at 9:24 AM munee...@gmail.com <munee...@gmail.com> wrote:

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