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吊环螺钉

强度：4.8材质：碳钢、合金钢

材料：低碳钢

材料说明：C 0.13-0.17 Mn 0.35-0.6 Si≤0.10 S≤0.🦩025

表面处理：白锌

表面处理内容：镀锌，需经过钝化才更耐腐蚀。使用白锌钝化液钝化，能得到白锌

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