The material of high-strength flat washer is 45# steel, modulated in large constant temperature of furnace. The hardness is up to 200HV with smooth surface. Products can be processed black. (packaging: carton / bag)
ECROBOT CO., Ltd, Business Registration Number : 220-88-71747, CEO J.W.Park, TEL : +82-2-552-7676, E-mail : E-mail : Contact us Address : (Hwanghwa B/D 11F, Yeoksam-dong)320, Gangnam-daero, Gangnam-gu, Seoul, South Korea