Kone- ja Siltarakennus Oy

Kone- ja Siltarakennus ja Siltarakennus Oyv is a Finnish former engineering company based in Sörnäinen, Helsinki. The company moved later to Helsingfors (now: Helsinki)
The 1892 founded company grew heavily in the 1920s and 1930s by acquiring Finnish engineering companies; the products were ships, steel bridges, weighing scales, separators and other machinery. By the early 1930s Kone ja Silta held virtually the whole Finnish shipbuilding industry.
Majority of the company ownership was acquired by Wärtsilä iron works in 1935 and Kone- ja Siltarakennus was incorporated into Wärtsilä Group in 1938. The acquisition was prominent due to the significant size difference of the companies, and a major step in Wärtsilä's development as one of the leading engineering companies of Finland