... mining, plastic, pharmaceutical and other industries; Suitable for horizontal or less than 20 degrees obliquity, transportation powder, granular and small ... :C1 polycot -- less than 35m spiral captain degrees, the oil driver.C2 polycot - spiral machine than 35m, double end ... dustproof sealing structure, commonly used in oil and gas, not for material have pollution or oil, where sealing effect is good, ...