GB/T 1222-2016 Translated English of Chinese Standard. (GBT 1222-2016, GB/T1222-2016, GBT1222-2016): Spring steels

Etukansi, 24.6.2018 - 40 sivua
The Standard specifies the terms and definitions, order contents, dimension, shape, weight, technical requirements, test methods, inspection rules, packaging, marking and quality certificate of hot-rolled, forged and cold-drawn spring steels. The Standard is applicable to spring round steels and spring square steels with a nominal diameter or a side length of not more than 120 mm (hereinafter referred to as bars), spring flat steels with a nominal width of not more than 160 mm and a nominal thickness of not more than 60 mm, spring steel wire rods with a nominal diameter of not more than 40 mm. The grades and chemical composition specified in this Standard are also applicable to steel ingots, billets and their products.


Test methods
informative Main technical parameters of 28SiMnB and 40SiMnVBE

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