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Submerged arc welding – shortened SAW and sometimes known as sub arc or subarc welding – is the workhorse of the heavy-plate structural steel, shipbuilding and pressure-vessel world. Filed in 1935 and improved for nearly 100 years it deposits a…

Updated May 2026 Reviewed by ZX welding-systems engineering team Non-destructive inspection of welds is when we look at a finished joint to check for cracks, porosity, lack of fusion, or other irregularities, without machining, etching or breaking the part. Every…

Pipe welding is the joining technique that holds everything from oil and gas trunk lines and power-station boilers, to pharma process tubing and shipyard hull pipe-work. The trade itself has not evolved in seventy years:- an arc, a filler, a…

Welding fabrication is the art of transforming the formed plate, beam, and tube that come off the fat furnace into bridges, transmission towers, hull sections, and transformer tanks that support modern infrastructure. It is also a craft under strange duress—a…