STAS 8249-1980 Cold drawn steel strip-sections LIGHT T - STEEL Dimensions 《冷拔钢带截面轻T 钢尺寸 》.pdf

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STAS 8296-1980 Cold drawn steel strip Sections LIGHT Z-STEEL Dimensions《冷拔钢带截面 轻Z型钢板尺寸 》.pdf

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