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1.Sinorock R38N self-drilling drill rod, 2.It's simulteneous drilling and grouting, 3.left hand thread drill rods, 4.ISO9001&CE - details see: https://www.machineto.com/sinorock-r38n-zinc-galvanzied-self-drilling-drill-rod-10316943

Range of Application of self-drilling drill rod

Self-drilling anchor drill rod is a reliable and convenient anchoring system which is applied in complicated geological conditions for rock support work. It is particularly applied in the following geological conditions, such as weathered rock, gravel layer, backfill, hard conglomerate, gravel layer, etc.

Sinorock self drilling drill rod is manufactured from heavy wall steel tube. The drill rod features a hollow bore for flushing, or simultaneous drilling and grouting. The drill rod are cold rolled to form standard thread profile.It's available in different dimensions from R25 to T111. The detailed specification of self drilling anchor bar is shown in the table below.

Features and advantages of self-drilling drill rod

1.It is easy to penetrate various rocks.

2.It can be elongated by using couplers.

3.Unnecessary to be pulled out.

4.The hollow bar can be used as grouting channel.

5.Drilling, grouting and anchoring can be finished at the same time.

The other details can be seen as follows

Size	Weight kg	Outer Φ mm	Inner Φ mm	Cross section mm2	Ultimate load KN	Yield Load KN	Tensile Strength N/mm²
R25N	2.3	25	14	290	200	150	520
R32L	2.7	32	22	340	220	180	530
R32N	3.4	32	18.5	430	280	230	530
R32S	4.1	32	15	520	360	280	540
R38N	6.1	38	19	770	500	400	520
R51L	7	51	36	890	550	450	510
R51N	8.4	51	33	1070	800	630	590
T76N	15	76	51	1900	1600	1200	630
T76S	19.7	76	45	2500	1900	1500	600

Pictures of self-drilling drill rod blew

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