Railroad Tracks - Turnouts - Railroad Terminal - Foundry We are manufacturer & distributor of railroad track materials, crane rails & accessories. Railroad track materials include Turnouts (Cambiavias) switches, rail frogs, frog guard rails, switch point guard rails, switch points, switch point clips, switch point stops, switch point security locks, rods, heel blocks, switch plates, gauge plates, switch stands, switch stand, connecting rods, switch point derails, switch slide plates, hook twin slide plates, compromise bars, spikes & rails. Grupo SEF also is a General Engineering Contractor providing full service railroad track construction. Our services include; design and engineering, new track construction, track maintenance, track removal, track inspection, paving, grading, crane-rail installation, and emergency repairs. Grupo SEF is a manufacturer of specialised in cast products used in the railway, mining, power and general engineering industries. On 2018 we started to offer services in our railroad yard for storing, sorting, or loading/unloading, railroad cars and/or locomotives.