BS 4521-4:1975-专用铁路道岔规范英国铁路机车不运行的重型等级道岔轴重可能超过25吨使用平底轨道-国家数字标准馆

现行 BS 4521-4:1975

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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 专用铁路道岔规范英国铁路机车不运行的重型等级道岔轴重可能超过25吨使用平底轨道

发布日期： 1975-04-30

由符合BS 11第110A或113A节规定尺寸的钢轨制成的4 ft 8½in轨距直轨道岔，采用耐磨钢或符合BS 1457的铸造奥氏体锰钢。交叉引用:BS 11BS 24:第3部分BS 24:第6部分BS 47BS 64BS 84BS 500BS 970:第5部分BS 1452BS 1457BS 1802

Turnouts from straight 4 ft 8½ 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 11BS 24:Part 3ABS 24:Part 6BS 47BS 64BS 84BS 500BS 970:Part 5BS 1452BS 1457BS 1802

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发布单位或类别：英国-英国标准学会

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相似标准/计划/法规

现行

BS 4521-3.2-1975

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 flat bottom rails
专用铁路道岔规范英国铁路机车不运行的中等等级道岔轴重不超过25吨平底轨道道岔

1975-04-30

现行

BS 4521-3.1-1974

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
专用铁路道岔规范英国铁路机车不运行的中等等级道岔轴重不超过25吨使用牛头轨的道岔

1974-12-31

现行

BS 4521-2-1975

Specification for railway turnouts for private users-Light grade turnouts over which British Railways locomotives do not operate, for axle loads not exceeding 10 tons, using flat bottom rails
专用铁路道岔规范英国铁路机车不运行的轻型道岔轴重不超过10吨使用平底轨道

1975-04-30