SAIL TMT Rock/Roof Bolt is a high-strength Fe 600 bar with modified rib design, giving better toughness and excellent bond properties with grouting materials. It is used for underground mine and tunnel roof support, slope stabilisation in hills and soil nailing/anchoring. The 20 mm size can be supplied for roof-bolt applications.

Key features

• High strength
• Better toughness
• Excellent bond with grouting materials due to modified rib design

Applications

• Underground mine and tunnel roof support
• Slope stabilisation in hills
• Soil nailing / anchoring

Specifications

Grade: Fe 600 | Yield Strength (Min): 600 MPa | Ultimate Tensile Strength (Min): 660 MPa | UTS/YS Ratio (Min): 1.1 | Elongation (Min): 10.0 % | Bend and Re-bend Properties: As per IS 1786:2008 Amendment-3 | Tolerances (Length, Nominal Mass, Carbon Equivalent): As per IS 1786:2008 | Other Grades Available: BS 4449 Grade B500B, CS2 Grade 500B, S560 Grade B500B, ASTM A615 Grade 40 (TMT wire rods), ASTM A615 Grade 40 / Grade 60 (TMT bars) - if sufficient orders | Available Diameter: 20 mm

Standards: IS 1786:2008 | IS 1786:2008 Amendment-3

Packing: Standard length 12 m (other lengths by mutual agreement); bundles strapped with wire: ISP 2.5-3.5 tonnes, DSP and BSP about 5.0 tonnes