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.
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 type | Steel grade | Standard number | Re min (MPa) | Rm min (MPa) | A5 min % | Threaded rod | Bolt 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 type | Nominal diameter rod dn (mm) | Thread rod | Loads 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.
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