A67-002005)热加工低碳钢和高碳钢垫板技术规范.pdfVIP

Designation: A 67 – 00 (Reapproved 2005) Standard Specification for Steel Tie Plates, Low-Carbon and High-Carbon-Hot-Worked1 This standard is issued under the fixed designation A 67; the number immediately following the designation indicates the year of original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A superscript epsilon (e) indicates an editorial change since the last revision or reapproval. 1. Scope 3.1.4 hold down holes—located on the plate away from the 1.1 This specification covers steel tie plates for use in rail seat, these holes do not allow spikes to contact the edge of railroad track. the rail base. Also called anchor spike holes. 1.2 Two grades of tie plates are described: Grade 1, low- 3.1.5 length—overall dimension of the plate at right angles carbon, and Grade 2, high-carbon-hot-worked. to the rail it supports. 1.3 The values stated in inch-pound units are to be regarded 3.1.6 Discussion—Tie plates of different length can be used as the standard. The values in parentheses are for information with a given rail section with the length chosen based on the only. traffic density of the track on which it is to be used. 3.1.7 line holes—located at the edge of the rail seat, these 2. Referenced Documents holes allow the spikes to contact the edg