1.size:7.1mm,9mm,10.7mm,12.6mm 2.grade:30MnSi 3. ... -quenching-heat-tempering-test-packing1.Grade: 30MnSi2.Size:nominal dia:7.1mm,9mm,10.7mm,12.6mmnominal area:40,64,90 ... ,125section area:min:39,62.4,87.5,121.5max:41.7,66.5,93.6,129.93. Payment: By 30% T ...