1.concrete pump pipe is made of special quality steel which is quenched and carried out carburizing chemical treatment on the inner wall.
2.The hardness of the flanged bushings can reach 58-60 de…
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