Standard No.:	TB/T 3109-2013
English Name:	Switch and crossing rails
Chinese Name:	铁路道岔用非对称断面钢轨
Chinese Classification:	S11    Railway components
Professional Classification:	TB    Professional Standard - Railway Transport
Issued by:	Ministry of Railways
Issued on:	2013-2-20
Implemented on:	2013-6-1
Status:	superseded
Superseded by:	TB/T 2344.2-2020 Rails-Part 2: Switch and crossing rails
Superseded on:	2021-7-1
Abolished on:	2021-07-01
Superseding:	TB/T 3109-2005 AT rails
Language:	English
File Format:	PDF
Word Count:	19000 words
Price(USD):	570.00
Delivery:	via email in 1~3 business day

本标准规定了铁路道岔用非对称断面钢轨的型式尺寸及极限偏差、技术要求、检验方法、检验规则、标志和质量证明书、质量保证书等内容。
本标准适用于铁路道岔用热轧或在线热处理50AT1，60AT1、60AT2、60AT3、60TY1非对称断面钢轨。伸缩调节器用钢轨可参照执行。