40K views · 911 reactions | ESAB's history of innovation began with the invention of the coated welding electrode in 1904 by Oscar Kjellberg. More than 100 years later, welders still encounter his initials in the form of an OK on the welding consumables they use. Today, ESAB OK Series low-hydrogen electrodes remain the industry standard and a mainstay of fabrication and maintenance applications. https://www.esab.co.uk/gb/en/okwithesab/index.cfm | ESAB Europe | Facebook