GB/T 41324-2022 Translated English of Chinese Standard. (GBT41324-2022): Fire-resistant weathering steels for structure
www.ChineseStandard.net, 4 giu 2022 - 24 pagine
This document specifies the size, shape, weight, technical requirements, test methods, inspection rules, packaging, marking and quality certificates of fire-resistant weathering steels for structure. This document applies to hot-rolled steel plates and strips and hot-rolled section steels with fire resistance and atmospheric corrosion resistance for the manufacture of general structures and building structures.
Packaging marking and quality certificate
Appendix A Normative Evaluation method for atmospheric corrosion resistance
Appendix B Normative Relative corrosion rate determination method
according to Formula acetone allowable deviation analysis of iron arithmetic mean atmospheric corrosion resistance buyer chemical analysis chemical composition melting chromium composition melting analysis content GB/T corrosion resistance index crack susceptibility index Designation Quality grade document Fire-resistant weathering steels hot-rolled section steels hot-rolled steel plates impact test Inspection item Iron and Steel iron oxide scale Low-alloy steel mass fraction mechanical control processing meet the requirements Methods for chemical millimeters molybdenum Negotiated Negotiated Negotiated niobium pc/batch Any steel photometric method pinyin plates and strips provisions of GB/T relative corrosion rate replenishing solution requirements in Table section steel GB/T specified value steel and alloy steel shall comply steel shall meet steel strip steels for structure supplier surface quality susceptibility index Pcm take longitudinal samples take transverse samples tensile test test method through-thickness characteristics titanium titration Ultrasonic testing upper yield strength vanadium weight loss rate weldability welding crack susceptibility YB/T Yield ratio