acid, alkali, and chemical resistant (1)Metallurgy Roller: Due to cost considerations, CPU roller, mainly used ... strength steel shaft> 500KN / m, the tension roller larger size φ 1.5 ~ 1.7m, Long 1.7m- 2m, Thick plastic 20mm. They are requiring ... .(4)Paper Roller: Its production efficiency can be increased by 1 time or more, and reduce energy consumption and costs.(5 ...