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对非表面处理类铝合金建筑型材国家标准中主要技术指标的确定作了说明。并介绍了新标准与GB/T5237-93标准中尺寸偏差、力学性能、表面质量相比较技术内容的变化。
The specification of the main technical indicators in the national standards for non-surface treatment aluminum alloy building profiles is described. And introduced the new standard and GB/T5237-93 standard size deviation, mechanical properties, surface quality comparison of technical content changes.