Issues with nickel and nickel alloy pipe materials under the new national standards
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In Table A1-6.1 of GB20801.2-2020, the condition of nickel and nickel alloy pipes has been changed from “M” to “annealed”, while in the relevant standard GB/T2882-2013 “Nickel and Nickel Alloy Pipes”, the condition of such pipes remains “soft state (M)”. Why was this change made in the new national standard? Should the status of nickel tubes in the construction drawing material list be written as “M” or “annealed” going forward?
What should be considered first is how to describe the material condition in the design drawings. . . .
In accordance with the requirements of GB2882, the material list in the construction drawings should specify GB/T 2882-2013 Nickel tube N7 M ∅10x1; however, the use of the symbol “M” is inconsistent with GB20801.2-2020.
The 2020 version hasn’t been implemented yet. . Never mind:lol