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SAE52100 GCr15 100Cr6 Cold Drawn Bearing Seamless Steel Tube
ASTM 4140 42CrMo Alloy Steel Pipe Seamless Steel Tube
NM500 High Strength Abrasion Resistant Wear Resistant Steel Plate/Sheet
20CrMnTi Cold Rolled Precision Seamless Steel Pipe
NM450 Wear Resistant Steel Plate Abrasion Resistant Steel Sheet




