รายละเอียดที่สำคัญ
การจัดส่ง:快递
แนะนำผลิตภัณฑ์
4140 round steel is a high-quality, high-strength steel with excellent mechanical properties and wear resistance. It is composed of alloying elements such as chromium, molybdenum and manganese, which through proper heat treatment process can achieve excellent strength and hardness.