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ZHONGSHAN QIANRUN PRECISION STEEL BALL CO.,LTD.

+86-760-88262588

Steel Balls Material Standard


company	ZHONGSHAN QIANRUN PRECISION STEEL BALL CO.,LTD.
Categories	LED Displays
Update	2011-03-04
Original Region	China
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Steel Balls Material Standard

Steel Balls Material Standard

GB308-89 & ISO3290 STANDARD

Grade	Vdws	?Sph	Ra	Vdwl	Gauge space	Gauge	Sub-gauge space	Sub-gauge
G3	0.08	0.08	0.13	0.012	0.5	-5~-0.5,0+0.5~+5	0.1	-0.2,-0.1,0,+0.1,+0.2
G5	0.13	0.13	0.25	0.02	1	-5~-1.0,+1~+5	0.2	-0.4,-0.2,0,+0.2,+0.4
G10	0.25	0.25	0.5	0.025	1	-9~-1.0,+1~+10	0.2	-0.4,-0.2,0,+0.2,+0.4
G16	0.4	0.4	0.8	0.032	2	-10~-2.0,+2~+10	0.4	-0.8,-0.4,0,+0.4,+0.8
G20	0.5	0.5	1	0.04	2	-10~-2.0,+2~+10	0.4	-0.8,-0.4,0,+0.4,+0.8

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