ผลิตภัณฑ์โลหะ
เอกสารมาตรฐาน
สหรัฐอเมริกา
AASHTO
M 169-20
Steel Bars, Carbon and Alloy, Cold-Finished
2020
11
HM42-2022 part 1
This specification covers cold-finished carbon and alloy steel bars produced in straight length and coil. Cold-finished bars are suitable for heat treatment, for machining into components, or for use in the as-finished condition as shafting or in constructional applications or for other similar purposes (Note 1). Grades of steel are identified by grade numbers or by chemical composition.