松雨霞 发表于 2019-12-23 13:58:46

ASTM A213/A213M-19

Standard Specification for Seamless Ferritic and Austenitic Alloy-Steel Boiler, Superheater, and Heat-Exchanger Tubes
无缝铁素体和奥氏体合金钢锅炉, 过热器和换热器管的标准规格

admin 发表于 2019-12-29 20:49:17

谢谢您的分享，金币已奖励！
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