WE STRIVE FOR CUSTOMER SATISFACTION BY PROVIDING HIGH QUALITY PRODUCTSOriginating from South Korea, founded in 1979, DK-LOK is with a turnover of 90 million USD and more than 80 distributors worldwide one of the leading manufacturers in instrumentation couplings and valves. Within the BENELUX SGS is the exclusive distributor. DK-LOK is one of the most certified instrumentation coupling and valve manufacturers in the world, comparable and completely interchangeable with, among others, Swagelok. The products are delivered in a number of different qualities to meet the needs of various applications. Examples include: oil and gas, refinery, offshore oil and gas, chemicals, petrochemicals, analytical instruments, steel plants, power plants, shipbuilding, pharmaceutical and alternative fuels.