Ø Standards: GB, AREMA, ISO, UIC,AS,BS etc
Ø Grade:8.8, 10.9
Ø Material: carbon steel, stainless steel
Ø Surface: plain ,HDG ,Black or as customer requirement
circumferential and ...
The tunnel bolts are divided into circumferential and longitudinal.
Back listProduct description:
We are capable of producing various types of tunnel bolt, including curved tunnel bolt , spear bolt ,customized bolts are also available according to your drawings or samples ...
Product technologies:
Ø Standards: GB, AREMA, ISO, UIC,AS,BS etc
Ø Grade:8.8, 10.9
Ø Material: carbon steel, stainless steel
Ø Surface: plain ,HDG ,Black or as customer requirement