2022年2月16日 · ASTMA249/A249M-2018a锅炉、过热器、换热器和冷凝器用焊接奥氏体钢管子的标准规范Standard Specification for Welded Austenitic Steel Boiler,Superheater, Heat …

本标准以固定名称 A249/A249M 发⾏；名称后⾯的数字表⽰⾸次采⽤的年份，或在修订的情况下表⽰最近修订的年份。 括号中的数字表⽰最近重新批准的年份。

2024年5月1日 · Standard Specification for Welded Austenitic Steel Boiler, Superheater, Heat-Exchanger, and Condenser Tubes. standard by ASTM International, 05/01/2024. …

Welded Austenitic Steel Boiler, Superheater, Heat-Exchanger, and Condenser Tubes1 This standard is issued under the fixed designation A249/A249M; the number immediately following …

ASTM A249 is a specification covering the welded stainless steel tubes conforming to the austenitic category which find their primary application in high pressure purposes like boilers, …

ASTM A249/A249M-24焊接奥氏体钢锅炉、过热器、换热器和冷凝器管的标准规范1.1 本规范 2. 包括由中所列奥氏体钢制成的标称壁厚焊接管和重冷加工焊接管 表1 ，具有各种等级，用于锅炉 …

ASTM A249 and ASTM A269 specifications are two ASTM standards for Austenitic stainless steel tubes, the difference between ASTM A249 and ASTM A269 is that ASTM A249 covers welded …

本标准以固定编号 A249/A249M 发布；紧随名称之后的数字表⽰最初通过的年份，或者在修订的情况下，表⽰最后修订的年份。 括号中的数字表⽰上次重新批准的年份。 该守则第 II 节中的阳 …

注：Quenched in water or rapidly cooled by other methods, at a rate sufficient to prevent reprecipitation of chromium carbides, as demonstrated by the capability of passing Practices …

ASTM A249和ASTM A269是美国材料与试验协会（ASTM）制定的两份不同用途的标准。 ASTM A249标准主要涉及锅炉、过热器、热交换器和冷凝器用奥氏体钢焊接管的规格，确保这些管 …