From the appearance of the product, the bolt sleeve can be divided into thin-wall type and heavy-duty type. There are also reinforced and extra-heavy types. The most basic function of the bolt sleeve is to repair the internal thread and strengthen the external thread. As a thread repair method, the bolt sleeve can quickly and effectively repair damaged threads; it can greatly enhance the strength of threaded holes when applied to low-strength materials
Contact Person: Mr. young li
Tel: 13409215871
Fax: 86-0373-3875118