Rock Bolt: 1.Material: steel thread or round bar 2.Fuction : underground support 3.Diameter : 16mm 18 mm 20mm 22mm 25mm

Rock Bolt is used together with dome plate and net for reliable ground support in mines, tunnels, slopes etc.

 

1.FEATURES :

(1) In the longitudinal direcition , rock body has equal tensile strength ,that is about 40% higher than the reverse-twist bolt in the same specification .

(2) Extend the support area , not only be used by end anchoring ,but also be used by fully anchoring ,that has a better support efficiency .a

(3)Low price, widely used in coal mines, railways, hydropower and other types of roadway projects.

2.PROPERTY:

SPEC.	MATERIAL	TENSILE STRENGTH  Mpa (Min.)	YIELD STRENGTH Mpa (Min.)	ELONGATION Mpa (Min.)
Thread Bar Rock Bolt: M16, M18, M20, M22, M25 available, different length available, head screw length 100-150mm. Special Screw Available	MG335	335	490	20
	MG400	400	585	20
	MG500	500	630	18
	MG600	600	800	18
Soild round bar Bolt: M16, M18, M20, M22 available, different length available, head screw length 100-150mm . Special Screw Available, other material available	Q235	375-500	235	26
	Q345	470-630	345	21
	45#	600	355	16
	40Cr	980	785	9

Nuts and Washers and plates also available

Rock Bolt