This Standard provides requirements for heat treatment of piping assemblies that meet the requirements of ASME B31 Code Sections. These requirements apply to
(a) preheating
(b) postweld heat treatment (PWHT)
(c) postforming heat treatment (PFHT) required by the ASME B31 Code Sections for other fabrication processes, including forming processes such as bending
(d) heat treatments required by contract specifications
本标准规定了符合ASME B31规范部分要求的管道组件热处理要求。这些要求适用于
(a) 预热
(b) 焊后热处理
(c) ASME B31 规范部分要求的其他制造工艺(包括弯曲等成形工艺)的成型后热处理 (PFHT)
(d) 合同规格要求的热处理