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Poin apa yang harus diperhatikan untuk inspeksi derek menara?
1) Periksa struktur baja, terutama baut berkekuatan tinggi. Permukaan penghubung harus dibersihkan dari debu, cat, jejak dan karat, dan dikencangkan dengan tangan torsi atau kunci pas khusus sesuai dengan persyaratan teknis perakitan.
8) Apakah perangkat batas lengkap, sensitif dan dapat diandalkan.
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Privacy statement: Your privacy is very important to Us. Our company promises not to disclose your personal information to any external company with out your explicit permission.