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["leichzeitig ist GBT 2 g8 g G4 G 6 der Norm für Druckrohleichungen undleichungsteil4 G6 abgelöst worden

2020-12-21View Original

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什么样的管道焊接需要热处理,这个热处理的温度和保温时间是不是有一个标准?恳请各路大神解答!
Reply #22020-12-22
请查阅如下标准 NB/T 10068-2018 含稳定化元素不锈钢管道焊后热处理规范 SH/T 3554-2013 石油化工钢制管道焊接热处理规范 SY/T 4083-2012 电热法消除管道焊接残余应力热处理工艺规范 SY/T 6893-2012 原油管道热处理输送工艺规范
Reply #32020-12-22
GBT 20801.4-2020 压力管道规范 工业管道 第4部分:制作与安装 2006已经被替代

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