... .9 Certification:ISO9001:2008 ISO14001 Fasterner and Power bolt and NutWe focus on offering bucket teeth ... , blades,cutting edge,end bits,power bolt and etc which applied to Construction Machinery (Excavator, ... will be your reliable partner. Mechanical Property of Our Products CategoryMaterialTensileYieldElongationHardnessImpact♦TeethSZ Series>=1700Mpa>=1500Mpa8 ... HB 380--420 Witness of Forever Strength»