Round shield, protective cover screw, rod protective cover, protective cover column details: Performance description: 
 Can be used to screw, light bars, columns, spindles and other rotating circular cylinder for protection. 
 Such shields can be used horizontally or vertically. Recommended level of use of plastic or aluminum support rings, keeping guard screw cavity and the distance between a certain uniform, extended service life. Stretched length of the large can compromise with each metal ring to improve the stability of the guard. Commonly used to connect metal or fixed side flange, you can also choose cuff style. 




 ? 



 Design parameters 
 Data Code Name Code Name Data Remarks Remarks 
 Lmax stretching the length?? D outer diameter?? 
 After the contraction length Lmin?? D1 inner diameter?? 
 L1 length of the lower connection?? D junction diameter?? 
 L2 length of the upper connection?? D1 junction diameter?? 


 Description: 1, Material: rubber, nylon leather, artificial leather. 
 ??????????? 2, lining: PVC bushing. 
 ??????????? 3, if the customer order, please fill in the required data in the table, each filling one. I plant system can be required to do!