GB/T 8731-1988 Translated English of Chinese Standard. (GBT 8731-1988, GB/T8731-1988, GBT8731-1988): Free-cutting steel - Technical requirementshttps://www.chinesestandard.net, 04.04.2021 - 10 Seiten This Standard applies to hot-rolled and cold-drawn steel bars and steel wires which are used in the cutting of ordinary machine tools and automatic machine tools. Its chemical composition also applies to ingots, billets and their products. |
Häufige Begriffe und Wortgruppen
allowable deviation bars and steel bars and wire Batch rules Brinell hardness HB buyer calcium certificate of steel chemical composition clipping machine cold-drawn status cold-drawn steel bars Decarburized layer delivered in hot-rolled Delivery status depth Different steel bars exceed half Free-cutting steel Grade 11 greater Group 2 GB hair lines half the tolerance hardness of steel heat treatment high-temperature tempered hot-rolled or cold-drawn inclusions Inspection and acceptance Inspection item less than Brinell machine tools Macro-structure marking and quality Mechanical property Elongation meet the requirements Ministry of Metallurgical packaging porosity properties and Brinell provisions of GB quality certificate re-inspection and determination requirements of Table rolled steel bars rules of steel sample blank Sample diameter Sampling quantity shear deformation Shrinkage silver steel status shall meet steel GB steel shall meet steel wires supplier surface of hot surface of steel Technical requirements Tensile strength Test method wire rods wires shall comply