GB/T 11251-2020: Translated English of Chinese Standard. (GBT 11251-2020, GB/T11251-2020, GBT11251-2020): Alloy structural steel plate and strip
https://www.chinesestandard.net, 12 jun. 2020 - 16 páginas
This Standard specifies the order content, size, shape, weight, technical requirements, test methods, inspection rules, packaging, marking and quality certificates of alloy structural steel plate and strip. This Standard applies to alloy structural steel hot-rolled steel plates whose thickness is 4 mm ~ 200 mm (hereinafter referred to as steel plates) and alloy structural steel hot-rolled steel strips (including shear steel plates) whose thickness is not greater than 12 mm and width is less than 600 mm.
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Packaging marking and quality certificate
Appendix A Normative Size shape weight and allowable deviation of the steel strip
25CrMnSi According acid pickling allowable deviation alloy structural steel Appendix banded structure batch Brinell hardness buyer Chapter chemical composition China contract cracks decarburized layer delivered Delivery status depth Determination document edge elongation after break exceed full decarburized layer greater than 30 Inspection item Iron less marking and quality mechanical properties meet the requirements Metallic materials Microstructure Modify negotiated nominal thickness normalizing Normative order content packaging plate and steel plates whose thickness preparation of samples properties of steel provisions of GB/T quality certificate Quenching range requirements of Table rounding sample shape side special requirements Standard steel hot-rolled steel steel products steel strip Steel strip width strip are allowed strips shall comply structural steel hot-rolled structural steel plate supplied supplier surface Table A.1 technical requirements Temperature thickness and allowable thickness is greater Three-point difference tolerance trimmed ultrasonic testing weight and allowable width and allowable