Steel products for pressure purposes — Quality requirements — Part 8: Plates of weldable fine grain steels with high proof stress supplied in the normalized or quenched and tempered condition (thicknesses from 3 to 70 mm)
压力用钢产品.质量要求.第8部分:在正火或淬火和回火条件下(厚度为3至70mm)供应的具有高验证应力的可焊细晶粒钢板材