1. Lub taub sab nraud yog qhov me dua. 2. Cov khoom siv siab tau siv rau cov khoom me me ntau lawm. 3. Cov khaub thuas sib txuam txias muaj qhov siab precision thiab zoo saum npoo zoo. 4. Cov kab rov tav hauv cheeb tsam ntawm cov yeeb nkab steel yog qhov nyuaj dua. 5. Cov kev ua tau zoo ntawm cov yeeb nkab steel zoo dua, cov hlau yog denser, nws tuaj yeem tiv taus qhov siab tsis muaj paug, siab qhov tseeb, siab du, txias txias yam tsis muaj deformation, nplaim taws, flattening tsis tawg, thiab lwm yam, yog li nws yog siv rau tsim cov tshuab pneumatic lossis cov tshuab ua hydraulic, xws li Lub tog raj kheej lossis cov roj kheej kheej yog tsim los ntawm cov hlab leeg. Cov tshuaj lom neeg muaj pes tsawg leeg ntawm precision kav hlau txuas nrog rau cov pa roj carbon C, silicon Si, manganese Mn, sulfur S, phosphorus P, thiab chromium Cr.
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