The requirements of dimensions, mechnical properties, surface quality on aluminium alloy seam tubes are explained.
介绍了本标准的编制过程及对有缝管材尺寸偏差、力学性能、表面质量等方面的规定。
The requirements of dimensions, mechnical properties, surface quality on aluminium alloy seam tubes are explained.
介绍了本标准的编制过程及对有缝管材尺寸偏差、力学性能、表面质量等方面的规定。
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