This standard specifies terms and definitions,ordering information,dimensions,shape,mass,technical requirements,test methods,inspection rules,packaging,marking and quality certificate of hotrolled,forged,and colddrawn spring steels.
This standard applies to round and square spring steels (hereinafter referred to as steel bars) with nominal diameter or side length not greater than 120 mm,flat spring steels with nominal width not greater than 160 mm and nominal thickness not greater than 60 mm,and spring steel wire rods with nominal diameter not greater than 40 mm.
The steel grades and chemical composition specified in this standard are also applicable to ingots,billets and their products.
定价: 648元 / 折扣价: 551 元 加购物车
This part of GB/T 1239 specifies the technical requirements,test methods,inspection rules,packaging,marking,transport and storage requirements of cold coiled helical extension springs.
This part is applicable to cold coiled helical extension springs (hereinafter simply “springs”).The section diameter of steel wire or wire products is greater than or equal to 0.5 mm.
This part is not applicable to springs with special performance requirements.
定价: 372元 / 折扣价: 317 元 加购物车