BMT, founded in 1988, is a specialized manufacturer of industrial fittings and valves that supplies domestic and overseas markets under the Superlok brand.
Its business is broadly organized into a fittings/valves division and an electrical division; the fittings/valves division covers SUPERLOK tube fittings, instrumentation valves, cryogenic valves, DBB valves, UHP fittings and valves, and regulators, while the electrical division offers power distribution panels and smart energy management systems built on patented technology such as the integrated MCPD power distributor.
Until 2006, sales tied to semiconductor customers such as SK Hynix and Samsung Electronics accounted for about 95% of revenue, but from 2007 the company expanded new deliveries into nuclear power, shipbuilding, offshore plants, and petrochemicals, diversifying its customer base.
In shipbuilding, HD Hyundai Heavy Industries and Hanwha Ocean are key customers, and the company supplies cryogenic GGC valves for LNG carriers ordered by Hanwha Ocean.
BMT became the first Korean company to obtain MAN's certification for a methanol Fuel Valve Train (FVT) and, together with HD Hyundai, entered the methanol-propulsion vessel market.
In UHP fittings and valves for semiconductors, the company has pursued import substitution in a market long dominated by Japan's Taekwang Fujikin. Domestic competitors include Taekwang, Sungkwang Bend, and Hy-Lok Korea, which compete in the high-value fittings market for LNG plants and petrochemical facilities.
According to an early-2024 interview, revenue mix at that time was roughly 65% semiconductor, 20% construction/plant, and 15% LNG carrier/shipbuilding, though this composition may have shifted since then.