Sandwich System
Sandwich System is designed by TONRY and has obtained patent certificate.
Sandwich System is designed by TONRY and has obtained patent certificate.
Sandwich System is designed by TONRY and has obtained patent certificate.
Sandwich System is designed by TONRY and has obtained patent certificate,two types of Sandwich System with single yield tube and double yield tube.
Features
Sandwich system is used for buffering and releasing the pressure of the rocks to protect the bolts from damaging and breaking. It could increase the elongation of the bolts.Especially match with cable bolts to form a high tensile strength,high elongation and high anti-shearing capacity support system.

Protect the miners in the world, Support the mines on the earth
Contact Person: Tony Sun
E-mail: rockbolt@trky.cn
Mobile: +86-18953894976
Tel: +86-538-5050586
Fax: +86-538-5050585
Whatsapp/Wechat: +86-18953894976