Luoyang Gongyan Technology Co., Ltd

Hollow bar self-drilling anchor is a bolting solution for unstable ground conditions such as sand, gravel, silt and clays, and for soft to medium frac

Selfdrilling hollow bar anchorisaboltingsolutionforunstablegroundconditionssuchassand, gravel, silt, and...

1 hot rolled thread bar 2 diameter:16-25mm 3 MG500, MG450, MG335 thread bar are optional. 4 high tensile strength, yield strength, and elongation

1 friction rock bolt 2 made of high-tensile alloy steel plate 3 big friction between bolt and rock 4 the height of tunnel must be larger than the b

1 prestressed hollow anchor bolt 2 steel shell-expansion anchor head 3 diameter:25/28/32mm, special size can be customized 4 designed for hard rock

specification GY25 GY28 GY32 external diameter (mm) 25 28 32 Breaking load(KN) 150-180 180-220 220-250 Interior diameter (mm) 15 17 22 drilling

GY FRProck boltisanexcellentchoiceforanchoringinhighgascontentareasuchasthecoalmine, due&n...

GY hot rolled SDA fully threaded anchor bar is a bolting solution for unstable ground conditions such as sand, gravel, silt, and clays, and in soft to

GY self drilling anchors has been used to maintain and increase the stability of soils by installing the GY high strength anchor rod as the reinforcin

Specifications 1.high strength & good ductility 2.simultaneous drilling and grouting 3.corrossion protected 4.hot rolled 5.fully threaded &nb.