BS-4521-4 | 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 | Document Center, Inc.

BS-4521-4 › Complete Document History
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

Obsolete Revision Information:

1975 EDITION - Specification for railway turnouts for private users. Heavy - April 30, 1975