樓梯板之寬度 樓梯板所用之承板有扁鐵與角鐵之分別扁鐵承板有65x6mm 75x6 mm 兩種規格角鐵承板一般為L50x50x6mm規格 Copyright Chun Chi Grating Co . , Ltd.Taiwan Products, B2BChinaSources, B2BtaiwanSources
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