COLD ROLL FORGED MASONRY DRILLS

For drilling into house bricks and masonry
Manufacturered in accordance with DIN8039(ISO 5468)
EuroNorm standard tungsten carbide tipped with cold roll forged

blade made by German CNC machine
Carbon steel blade hardened，tempered and Zinc plated or sand blasted.

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DRILL DIA.		D1	D2	STANIDARD		MEDIUM		LONG		EXTRA LONG		EXTRA LONG
mm	inch	mm	mm	mm	mm	mm	mm	mm	mm	mm	mm	mm	mm
				L1	L2	L1	L2	L1	L2	LI	L2	L1	L2
3.0	1/8	2.7	2.4	60	30
4.0	5/32	3.5	3.2	75	40
4.5		4.4	3.8	85	50
5.0	3/16	4.4	3.8	85	50	150	90
5.5	7/32	5.0	4.5	85	50	150	90
6.0		5.5	4.7	100	60	150	90	300	220	400	300	600	500
		5.5	4.7			200	135	300	220	400	300	600	500
6.5	1/4	5.5	4.7	100	60	150	90	300	220	400	300	600	500
7.0	9/32	6.0	5.2	100	60	150	90	300	220	400	300	600	500
8.0	5/16	6.7	5.7	120	80	150	90	300	220	400	300	600	500
		6.7	5.7			200	135	300	220	400	300	600	500
9.0	11/32	7.6	6.7	120	80	150	90	300	220	400	300	600	500
10.0	3/8	8.4	7.2	120	80	150	90	300	220	400	300	600	500
		8.4	7.2			200	135	300	220	400	300	600	500
11.0	7/16	9.0	7.65	150	90	200	135	300	220	400	300	600	500
12.0	15/32	10.2	8.8	150	90	200	135	300	220	400	300	600	500
13.0	1/2	10.5	8.5	150	90	200	135	300	220	400	300	600	500
14.0	9/16	11.5	10.2	150	90	200	135	300	220	400	300	600	500
15.0	19/32	11.6	10.2	150	90	200	135	300	220	400	300	600	500
16.0	5/8	13.4	11.7	150	90	200	135	300	220	400	300	600	500

About Us

Ningbo Tiangong Great Star Tools Co.,Ltd since 1971, is the important production foundation for COLD ROLL FORGED MASONRY DRILLS Wholesale.The company covers 30 thousand square meters, building area covers 23 thousand square meters. Company has more than 280 employees and sales amount was 20 million USD in last year. Its main products include hand tools, wood chisel, wood plane, flat wood bit,cold chisel,SDS&masonry drill bit, file&rasp etc. Company passed ISO9001 and BSCI quality management system, and GS, TUV product quality certification. Ningbo Tiangong Great Star Tools Co.,Ltd is also the permanent members in Ningbo National Hardware Association.Company main products include: wood chisel, wood plane, flat wood bit,cold chisel,drill bit, file&rasp etc. Main products market share: 99% products sells overseas, 1% sells domestic and sales amount without tax is 101 million RMB last year.North American&South American 50%，EUR 40%，South Africa 5%，Other 5%

Location:	China
Business Type:	Manufacturer, Exporter
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