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THREAD BAR BOLT

  

JENNMAR

ALL THREAD BAR BOLT

Technical Merits :
  • The hight deformation thread provides good load transfer between bolt and resin (cement).
  • Continuous thread over the bar length provides high flexibility in fragile entry surface and blasting conditions as the bolt can be readily re-tensioned.
  • Ulitization of lock washer (Optional) can effectively prevent bolt load bleeding due to the fragie entry surface and blasting
  • Typical Lab pull test shown in figures
Features :
  • Hot rolled with high continuous deformation over entire bolt length
  • Coarse left hand thread with 10 mm (8 mm) pitch
  • Dome plate and lock washer (optional)
  • Resin anchor or cementation grouts
  • Available in black or galvanized
Bolt types and physical properties :
Bolt Type Diameter (mm) Typical length (mm) Drill Hol diameter (mm)  
Typical Yield (ton) Typical tensile (ton) Elongation A5 (%)
AT18
18 As required 28 14 17 20
AT20
20 As required 28 17 21 20
AT 22
22 As required 28-32 20 25 20
AT25 25 As required 32 25 32 20