Regarding welding test plates.
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(Code for Pressure Vessels) Article 77, 2. (5) Pressure vessels welded from dissimilar steels (different groups). How is the so-called heterogeneous steel classified here? Do Q235B and Q345R count? Last edited by 263525689 on 2009-3-31 12:38]
Take a look at the JB4708-2000 welder assessment! There is a classification and grouping of steels above! ! !
The classification of base metal grades is based on JB4708 or JB4709: Q235B corresponds to Ⅰ－1, Q345R corresponds to Ⅱ－1; the evaluation for Q345R+Q345R can cover Q345R+Q235B as well