Robert Bischof of voestalpine Böhler Welding discusses consumable selections for pipeline use.

Oil and natural gas are currently still among the most important sources of energy. Countless transport pipelines already exist world- wide or are at the project planning stage.

Pipe welding with cellulosic electrodesThe development of new high-strength pipe steels places ever-greater demands on welding technology. In the following article we present the specially developed welding materials from Böhler Welding, voestalpine Böhler Welding’s brand for joint welding consumable that are optimally adapted to individual pipe materials and there- fore comply fully with the increasingly stringent quality requirements and the safety regulations.

Circumferential pipe seams are often welded using cellulose-coated rod electrodes using a vertical-down welding position. This method enables welding with larger electrode diameters, higher currents and achieves higher welding speeds. This results in significant economic advantages in comparison to its most common alternative; vertical-up seam welding using rutile- or basic- coated stick electrodes.

Welding with cellulose-coated electrodes

Careful seam preparation is of great importance for achieving high-quality weld joints. Electrodes such as Böhler FOX CEL are particularly suitable for root pass welding, even with high-strength pipe steels.

Welding technologists from voestalpine Böhler Welding have developed … read more.

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Crown Publications, one of South Africa’s largest business-to-business publishing houses, came into existence in 1986. Since then, the company has grown from producing a single magazine, Electricity SA (renamed Electricity+Control), to publishing six monthly magazines, three quarterlies, and a number of engineering handbooks.