Full automatic grinding rods and tempering production line of Dongyuan adopts advanced temperature control device and heat treatment equipment,raw materials was developed and researched by ourselves , which makes the product with a higher hardness (45-58 HRC), curvature is less than 1.5 mm/m ,much better wear resistant etc.
Hebei Dongyuan Steel Ball Co., Ltd. --------------------------------------------------------------------------------------------- Office Address: Industry Zone of Fengfeng District, Handan City, Hebei Province, China. Tel: +86 151 8886 6835 Fax: +86 310 5288058 Email: hbdygq@qq.com