The pistons and flexible pipes are recommended to be replaced every 4-5 years during the maintenance.

液压缸，连接软管及接头建议在每4-5年维护时更换。

Examples:

常见油缸位置：

1. Blanket Tensioning Piston 靴板提升液压缸
2. Shoe Loading Piston 靴板提升液压缸
3. Size press Heads Piston 施胶机端头液压缸
4. Size press Roll loading Piston 施胶机辊加载液压缸
5. Other Pistons 其他液压缸