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Specification for railway turnouts for private users. Medium grade turnouts over which British Railways locomotives do not operate, for axle loads not exceeding 25 tons. Turnouts using bull head rail
BS 4521-3.1 – Specification for railway turnouts for private users. Medium grade turnouts over which British Railways locomotives do not operate, for axle loads not exceeding 25 tons. Turnouts using bull head rail
Turnouts from straight track, 4 ft 8½ in gauge, nomenclature, materials, design, production, inspection, identification marking, layout, leading and detail dimensions. Appendix gives recommended minimum requirements for partly worn rails.
