材質 :. 1.不銹鋼白鐵: SUS304, SUS316. 2.中碳鋼: C1035 - C1045. 3.Grade 8.8: C1018 - C1022, 10B21. 4.合金鋼: SCM435 - SCM440 (Grade 10.9, Grade 12.9).
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