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Alloy SKD11 Mould Steel Round Bar for Making Mask Machine China Supply C:1.4~属1.6 Si<=0.4 Mn<=0.6 Cr:11~13 Mo:0.5~1.2 V:0.2~0.5 S<=0.03 P<=0.03 Ni<0.5 1. Our Service For You Pre-sale Service 1. Sample ...