Reasonableness discussion on hardness upper limit of normalized and tempered T22 steel tubes specified in ASME SA-213M
Lai Xianhong, Zeng Hui, Yang Huachun, Zhang Wei
Heat Treatment of Metals . 2021, (3): 239 -242 .  DOI: 10.13251/j.issn.0254-6051.2021.03.046