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标准轨距铁路每米43、50公斤钢轨9、12号单开道岔型式尺寸等39项部标准,业经修订批准,现予公布。标准名称及代号如附表。对执行中的有关问题说明如下: 1.这39项部标准于1976年7月1日开始实行。因修订的新标准较原标准在产品质量要求方面有所提高,希各有关生产道岔工厂积极作好生产过渡准备工作。有关道岔尖轨、轨端淬火和道岔方钢拉杆锻造问题,要积极创造条件后执行。 2.各铁路局工务修配厂和工务段,为维修而生产的道岔亦应按本标准执行。对个别技术要求执行有困难的,可与使用单位协商解决。 3.新标准实行后,原标准TB339-64～TB411-64、TB413-64～TB445-64即行作废。
Standard gauge railway 43,50 kilograms per meter rail 9,12 single turnout size and other 39 ministerial standards, the revised approval, is hereby announced. Standard name and code such as the schedule. The issues related to implementation are described as follows: 1. These 39 departmental standards started on July 1, 1976. Due to the revised new standards in the original standards in product quality requirements have improved, hope that the production of turnout factory actively make preparations for the production transition. Relevant to the switch rail, rail quenching and turnout square steel rod forging problems, to actively create the conditions to implement. 2. The Railway Administration business repair plant and public works section, for maintenance and production of turnouts should also be implemented according to this standard. The implementation of individual technical requirements are difficult, and users can use the unit to resolve. 3. After the implementation of the new standard, the original standard TB339-64 ~ TB411-64, TB413-64 ~ TB445-64 that line is invalid.