GRK Rail (former Winco Oy) is conquering the railways. Our services cover design, construction and maintenance services in a ... wide range of railway engineering fields; superstructure, electrification, signaling system and special structures. We contract in different contract models; main- and subcontracting, EPC, PPP and alliance models. We at GRK Rail have a long expertise in railway electrification, signaling system and superstructure works – the history of GRK Rail reaches to the first electrified tracks in Finland in 1960s under the name Sähköradat Oy. Today we have over 300 employees, several subcontractors and locations all over Finland. read more