[Models] S780/SS2.5 , S660/SS2.0 , S550/SS1.7 , S460/SS1.4 , S390/SS1.2 , S330/SS1.0 , S280/SS0.8 , S230/SS0.6 , S170/SS0.5 S140/SS0.4 , S110/SS0.3 , S70/SS0.2

Steel shot production standards:

Compared with conventional cast steel shot:

应用时间1960年

2009年原料来源