T thread Self Drilling Rock Bolt T30 30mm Anchor Drill for Civil Construction 1. Application: Comparing to R thread rock bolt system, T thread rock bo...
R38N 38mm Self drilling anchor bolt for decayed rock , sand gravel 1. Introduction: Self drilling anchor bolt combines drilling, grouting and anchorin...
Yellow R51 90mm Anchor Drill Gap Spacer for Self Drilling Anchor Bolt 1. Self-Drilling Anchor System--Gap Spacer Spacers or centralizers are designed ...