High Strength Mining Self Drilling Hollow Rock Anchor Drill Bolt,High Strength Mining Self Drilling Hollow Rock Anchor Drill Bolt price,High Strength Mining Self Drilling Hollow Rock Anchor Drill Bolt Manufacturer-Shandong China Coal Industry & Mining Group'

 Details Of High Strength Mining Self Drilling Hollow Rock Anchor Drill Bolt

Introduction Of High Strength Mining Self Drilling Hollow Rock Anchor Drill Bolt

* High Strength Mining Self Drilling Hollow Rock Anchor Drill Bolt is widely used in road / rail construction and maintenance
* Rock Bolt can be used for Tunneling & Mining
* Rural environments
* Private residences
* Special foundations
* Avalanche protection structures

Alloy Drill: made of high-quality alloy by precision technology, with strong hardness and toughness, penetrating force can drill into a variety of rock

Bolt Body: The most important component of the assembly, plays a major role in drilling and anchoring.

Connection Sleeve: Play the role of connection when the bolt needs to be lengthened.

Pad: can withstand greater surrounding rock stress.

Screw Nut: The stress of surrounding rock can be concentrated on the pad.

Parameter of High Strength Mining Self Drilling Hollow Rock Anchor Drill Bolt

Description	unit	R25	R32N	R32N	R32S	R32SS	R38N	R51N	T30N	T40N	T52	T76N
Outer Diameter	mm	25	32	32	32	32	38	51	30	40	52	76
Inner Diameter	mm	14.5	21.5	20	20	18.5	23	36	15	21	26	52
Area	mm2	255	331	369	369	407	548	892	331	803	1274	1991
Ultimate Tensile Load	KN	200	280	280	360	400	500	800	260	660	929	1660
Yield Load	KN	150	230	230	280	330	400	630	220	525	730	1200
Ultimate Tensile Strength	Mpa	784	846	758	976	983	912	897	785	822	729	837
Yield Strength	Mpa	588	695	623	759	811	730	706	665	654	573	628
Nominal Weight	kg/m	2	2.6	2.85	2.9	3.2	4.2	7	2.6	6.3	10	15