contact-form
Search

Application

Resine bolt G type are designed to be used for roof and ribs support in mine working areas and for tunneling as an independent or additional roof support system.

Technical description

Resine bolts G type are of modern construction of high capacity – over 300 kN.

Rods are made of rib bar dn=20, dn=25, dn=28 mm.

Domed washers of dimension 150 x 150 i 200 x 200 are made of steel sweet 6,8 and 10 mm thick.

Tabele 1 - Parameters:

Bolt typeSteel gradeStandard numberRe min (MPa)Rm min (MPa)A5 min %Threaded rodBolt capacity(kN)
G20/20 BSt 500S DIN 488:2009 500       550       16       M20 180
G25/22 B500B   M22 180
G25/24 GR 60  ASTW A615  M24 210
G25/24 M24 260
G28/27 GR B500B BS 4449/2005 M27 280
G32/30 B500S  +A2:2009 M30 340
G32/33 CAN/CSA.G3.18-M92(R2007) M33 430

Tabele 2 - Technical Parameters:

Bolt typeNominal diameter rod dn (mm)Thread rodLoads 1 mb pręta (kg)Bolt length(mm)
G20/20 20 M20 2,47 1000 - 12000
G20/22 20 M22 2,47
G25/24 25 M24 3,85
G25/26 25 M26 3,85
G28/27 28 M27 4,83
G32/30 32 M30 6,31
G32/33 32 M33 6,31

G type bolts were examined in Technische Universitat München with positive result.