Note 4, is rolled pieces uneven hardness (8.8 bolts should be 27 ~ 30HRC; 10.9 level applications in 35 ~ 37HRC) Dongguan rolling wheels wholesale, preventing sometimes because (50 ~ 55HRC) quenching and tempering blend into pieces device, its hardness and rolling wheel tooth pattern similar to the hardness of the blade, resulting in chipping. 5, rolling lubricant is not added when rolling wheel production, causing friction, so cusp rapid temperature rises above the fire rolling cycle of temperature, excessive temper softened tooth pattern Dongguan rolling wheel supplier, occurred back teeth heap teeth fail Notes 6, select the rolling wheels first election pitch, look at how much the wheel is suitable for rolling. Rolling wheels imported steel, alloy steel, high speed steel specialty materials, stable quality and high precision rolling wheels, complete specifications and international standards. Precision threaded surface roughness and mold life and other performance indicators have reached the advanced. Dongguan rolling wheels Suppliers | rolling wheels | MassMutual rolling wheels provided by the Dongguan City Hengli Huai Hardware electronic processing. Dongguan Heng Li Huai Hardware electronic processing (www.wantong988.jqw.com) strong, credible, metal molds, and other industries in Dongguan, Guangdong has accumulated a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead MassMutual rolling wheels and you hand in hand into the brilliant, for a better future!