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BS 4521-4:1975
New product
BS 4521-4:1975 Specification for railway turnouts for private users. Heavy grade turnouts over which British Railways locomotives do not operate, for axle loads which may exceed 25 tons , using flat bottom rails
standard by BSI Group, 04/30/1975
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Full Description
Turnouts from straight 4 ft 8 in gauge track made from rails dimensionally in accordance with BS 11, section 110A or 113A, in wear resistant steel quality or of cast austenitic manganese steel to BS 1457.Cross References:
BS 11
BS 24:Part 3A
BS 24:Part 6
BS 47
BS 64
BS 84
BS 500
BS 970:Part 5
BS 1452
BS 1457
BS 1802