To create the dark metal finish on the two upper levels, these blocks are clad with Galvalume - a type of steel sheet that is coated with an aluminium and zinc alloy.
为了在上两层创建黑色的金属饰面，这些体块都包裹了铝锌合金镀层——这是一种镀有铝锌合金的钢板。
The present invention relates to new-type expansion joint with corrugate pipe consisting of corrosion-resisting lining and clad metal.
本发明涉及一种新型膨胀节，其波纹由耐蚀衬里材料和外包金属材料组成。
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