Specifications

drilling rod
1.Whole heat treatment
2.Screw thread heat treatment.
3.Hard chromed on pin end

geological steel pipe-entire length thermal treatment, NC lathe with former cutters

Material:30CrMnSiA or 45MnMoB(A grade), XJY850 or BG850( B grade)

QB series Rod parameter-geological steel pipe-entire length thermal treatment, NC lathe with former cutters
Spec.	Unit	BQB	NQB	HQB	PQB
OD/ID	mm	55.6/46	71/60	89/77.8	114.3/101.6
Thickness	mm	4.8	5.5	5.6	6.35
Length	m	1.5 or 3	1.5 or 3	1.5 or 3	1.5 or 3
Weight	kg/m	6.01	8.8	11.51	17.3
thread length	mm	44.45	44.45	44.45	63.5
thread pitch	thread/inch	3	3	3	2.5
box thread tooth height	mm	0.76	0.76	0.76	1.17
pin thread tooth height	mm	0.88	0.88	0.88	1.27
thread tooth angle	.	29	29	29	29
tensile resistance(A series)	kn	400	530	510	565
tensile resistance(B series)	kn	450	615	625	660
bore depth	m	1200	1000	900	800

RQ series Rod parameter-geological steel pipe-entire length thermal treatment, NC lathe with former cutters
Spec.	Unit	BRQ	NRQ	HRQ	PRQ
OD/ID	mm	55.6/46	69.9/60.3	88.9/77.8	114.3/101.6
Length	m	1.5 or 3	1.5 or 3	1.5 or 3	1.5 or 3
Weight	kg/m	6.01	8.8	11.51	17.3
thread length	mm	42	42	41.91	63.5
thread pitch	thread/inch	3	3	3	2.5
box thread tooth height	mm	0.76	0.76	0.76	1.17
pin thread tooth height	mm	0.88	0.88	0.88	1.27
thread tooth negative angle	.	5	5	5	5
tensile resistance(A)	kn	450	525	545	565
tensile resistance(B)	kn	530	625.5	602	660
bore depth	m