1.Self drilling threaded anchor 2.Integrates drilling, grouting and anchoring at one time 3.Suitable for difficult grounds

      Self  drilling threaded anchor  consists of anchor rod, steel drill bit with alloy head, anchor coupling(optional),arch plate, grouting stopper and hex nut.

 

      It has been widely used in tunneling, mining, slope stabilization, tunnel diseases treatment and roof supporting of underground works. It integrates functions drilling, grouting and anchoring at one time and is suitable for difficult grounds (clay, sand, friable…etc). Hollow anchor rod is made of seamless tube with high strength.

 

Product Specification:

 

	GYZ25	GYZ28	GYZ32	GYZ38	GYZ51	GYZ63	GYZ76	GYZ89	GYZ103
Exterior	25	32	32	38	51	63	76	89	103
Interior	13	23	20	19	28	43	56	68	83
Breaking load	200	240	280	530	838	1100	1380	1600	1980
Tensile yield point	150	190	230	440	693	909	1140	1280	1636
Drill diameter	42	51	51	76	90	90	102	115	140
Delivery length		1.0/1.5/2.0/2.5/3.0/3.5/4.0/4.5/5.0/6.0

 

1) also available hot dip galvanized anchor bolts

2) left hand only unless otherwise noted

3) right hand bolts

4) kinds of drill bits are optional for different ground conditions.

   

self drilling threaded anchor