self drilling hollow left hand thread bolts

1.left hand thread bolts 2.Common groutable 3.Stainless steel anchor bar 4.with domed plate and nut 5.R& T thread

1.left hand thread bolts2.Common groutable 3.Stainless steel anchor bar4.with domed plate and nut5.R& T thread

1. Common groutable anchor bar consists of hollow anchor bolt, anchor plate and anchor nut.It can be used in the supporting of all kinds of rock and soil, and suitable for the supporting of medium or long anchoring bolt, or the roof supporting of underground works.

2. Steel anchor bar with expansion case consists of steel anchoring head with expansion case, hollow slip casting bolt, slip stop plug, anchor plate and nut. This kind of bolt is used for rock supporting work that requires initial prestress.

standard	outside diameter	average internal dia	ultimate load capatity	yield load	tensile strength	yield strength	theorical weight	thread type
	mm	mm	kn	kn	N/mm2	N/mm2	kg/m
R25N	25	13	200	150	720	560	2.4	ISO10208
R32N	32	18.5	280	230	720	560	3.2	..
R32S	32	15	360	280	740	560	4.0	..
R32L	32	20	220	160	740	560	2.9	..
R38N	38	19	500	400	740	560	5.8	..
R51L	51	36	550	450	740	560	6.8	..
R51N	51	33	800	630	740	560	7.8	..
T76N	76	51	1600	1200	740	560	15.6	ISO1720
T76S	76	45	1900	1600	740	560	20.0	..
T30/11	30	11	320	260	740	560	3.2	..
T40/16	40	16	660	525	740	560	7.2	..