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8620h棒材8620h棒料8620h圆棒SAE8620h板材10A棒材10A圆钢圆棒
10# 20Cr 65Mn 60Si2Mn GCr15 27SiMn 38CrMoAL SAE8620H圆钢切割
SAE8620圆钢 ASTM 8620H圆棒 40CrNiMo圆钢 40铬镍钼钢材实心圆棒
SAE8620H 合金钢铁棒 实心圆棒8620H光棒 42CrMo
W18Cr4V合金结构钢 SAE8620H圆棒 42CRMO圆钢 17CrNiMo6中厚薄板
SAE8620H圆钢 合金钢铁棒 实心圆棒8620H光圆钢棒 42CrMo圆钢
30CrNiMo8圆棒38CrSi圆钢9Cr18Mo 34CrNiMo6锻打SAE4340板材8620H
0CrNiMo8圆棒8CrSi圆钢9Cr18Mo 4CrNiMo6锻打SAE440板材8620H