四螺纹口按国际标准化制造，材料选用38铬钼铝氮化钢，硬度高，使用寿命长。
4 , screw thread gob produced by internation standard , material is 38chrome molybdenum aluminium azote steel , high rigidity , long time.
本发明公开了一种用于钢液脱氧脱硫与合金化的铝镁铁合金。
The present invention discloses one kind of Al-Mg-Fe alloy for deoxidizing and desulfurizing molten steel.
防眩投光灯材质及特性：铝压铸灯体，高纯铝反射器，5mm钢化安全玻璃。
Material and characteristics: Die-casting aluminum body, high purity aluminum reflector, 5mm thick shockproof safety glass.
防眩投光灯材质及特性：铝压铸灯体，高纯铝反射器，5mm钢化安全玻璃。
Material and characteristics: Die-casting aluminum body, high purity aluminum reflector, 5mm thick shockproof safety glass.
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