Zinc alloy die casting machine accessories injection ring steel ring steel piston ring

===under info was translated buy computer===
The original zinc alloy die casting machine accessories injection ring steel ring steel piston ring made of high-quality imported steel, after vacuum quenching treatment, uniform texture, better wear resistance performance, uniform wall thickness, Good strength model size/bar (30) weight (g)/ 45*4*2.5 15 50 50*4*2.5 20 55 55*6*2.5 18 60 60*6* 2.9 20 65 65*6*2.8 23 70 70*6*3 27 75* 75*6*3 28 80 80*6*3 38 80*8*3 30
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