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CHANGSHU FENGYANG SPECIAL STEEL CO.,LTD Basic Info: 1. Grade: 20#/SAE1020, 45#/SAE1...
steel round bar 40Cr/sae 5140 for 8.8 grade bolt Grade:40Cr/SAE5140/C/SCr440 1.S...
FORGED ALLOY STEEL S20C, S35C, SCr420, SCM420, SCM440, Q235.. Standards: China (GB),...