On the thickness deviation and thickness accuracy of rolled steel plates
Thread Content
Hello, everyone! I would like to ask: In the GB709 standard, there are distinctions among the different types of deviations in steel plate thickness, namely Category N, Category A, Category B, and Category C ； Based on thickness accuracy, it can be further divided into ordinary thickness accuracy PT.A and higher thickness accuracy PT.B. What is their relationship? How to tell the difference? I’m a bit confused; please ask an expert to help. Thank you! ! !
This post was last edited by SDHZZXM on 2017-10-18 08:48. There are separate tables for different types of deviations in steel plate thickness; steel plates for pressure vessels should be of category B......