“X50CrMnNiNbN21.9” 的搜索结果，共8条

---

---

---

---

X50CrMnNiNbN21-9

---

X50CrMnNiNbN21-9, 1.4882

内燃机阀钢和合金

---

X50CrMnNiNbN21-9

---

A 313 S24100

---