合金鋁方管，5052合金鋁方管
2024-12-16
鋁管有色金屬管的一種。 指用純鋁或鋁合金經擠壓加工成沿其縱向全長中空的金屬管狀材料。可有一個或多個封閉的通孔，壁厚、橫截面均勻一致，以直線形或成卷狀交貨。廣泛用於汽
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