GESTIONVAL ODNODN INFRASTRUCTURE Technical Inquiry

The pigtail is too stiff and difficult to weld

ODN and passive infrastructure knowledge brief Published 06 Jan 2026

Prepared for preliminary research by the GESTIONVAL ODN knowledge desk. Confirm network topology, split ratio, box or cabinet capacity, joint closure rating and loss budget against current standards and product documentation.

This guide breaks down the most common TIG welding problems, what causes them, and how to prevent or fix them. Gas tungsten arc welding (GTAW), or TIG, is often chosen for projects requiring high aesthetic quality, structural integrity or compliance with strict codes and standards. Every welder, welding inspector, and fabrication engineer must have a working knowledge of the eight. TIG welding, which stands for Tungsten Inert Gas welding, is a high-precision welding process that employs a non-consumable tungsten electrode to effect the welding operation. It creates clean, strong welds.

The pigtail is too stiff and difficult to weld

Failure analysis of cracking in the welded joints of hydrogen reformer

Cracking failure of Incoloy 800H welded joints used for about eight months occurred in hydrogen reformer outlet pigtail tubes. Visual inspection, microscopic examination, chemical

Evaluation of Stress Relaxation Cracking on 800HT Pigtails

The outlet pigtail was used to transfer the process fluid of the steam reformer which is connected to a manifold header. It was requested to conduct a failure analysis on damage in the

TECHNICAL NOTE

While the reformer tube to pigtail butt welds were performed successfully, defects developed in the hot collector sockets after the completion of the pigtail to hot collector socket welds as illustrated in Figure 1.

Technical note

This reference is intended for preliminary ODN and passive infrastructure research. Topology, split ratio, box or cabinet capacity, closure rating, cable type, test limits and applicable standards must be verified for the specific project.

ODN and Passive Infrastructure Updates

Still Have a Technical Question?

Use the inquiry form to describe an ODN network, passive component or distribution box question.

Start an Inquiry