美国材料协会标准 A210 - A 210M - 19.pdf

This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee. Designation: A210/A210M − 19 Standard Specification for Seamless Medium-Carbon Steel Boiler and Superheater Tubes1 This standard is issued under the fixed designation A210/A210M; 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 (´) indicates an editorial change since the last revision or reapproval. 1. Scope* 2. Referenced Documents 1.1 This specification2 covers minimum-wall-thickness, 2.1 ASTM Standards:3 seamless medium-carbon steel, boiler tubes and boiler flues, A450/A450M Specification for General Requirements for including safe ends (see Note 1), arch and stay tubes, and Carbon and Low Alloy Steel Tubes superheater tubes. 3. Ordering Information NOTE 1—This type is not suitable for safe ending by forge welding. 3.1 Orders for material under this specification should 1.2 The tubing sizes and thicknesses usually furnished to 1 include the following, as require