Manufacture & Export of - DK-Lok Double Ferrule Tube Fitting - DK-Lok Ball Valve We, DK-Lok Corp. strive to ensure customer satisfaction by providing products of the highest quality. We have newly established technical partnerships with major global marine equipment manufacturers including the Big 3 domestic manufacturers who have been leading the new offshore plant era, in our entrepreneurial spirit to ensure the provision of differentiated and highest quality technology and services to our customers. Globally, DK-Lok Corp. is widely recognized for its technical capacity comparable to that of Swagelok, the world’s largest enterprise in the instrumentation of fittings and valves, as well as its high level of customer satisfaction. 1) Oil & Gas, Petrochemical, CNG&NGV, LNG, Hydrogen industry 2) Partial carburization heat treatment secured non-oxidation ferrule technology (US - US9631747 patent) 3) Acquired ASME, N, NPT, NS certification for the first time in Korea and the second in the world Ship Classification Certificates https://prokcssmedia.blob.core.windows.net/sys-master-images/h93/h36/9812540915742/ASTM%20F-1387%20Intermix%20Test%20Brochure_Korea%20(2019.04.29)%20-Low.pdf