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精密钢管的国家标准及国外标准精密钢管的国家标准;GB/T3639-2009,另外可能也还有应用GB/T8162-2008结构用精密钢管的(安国标GB/T8162生产的一般是低要求的一般钢管)。精密钢管国外标准主要有:DIN2391, EN10305-1,EN10305-4, ASTM A51…
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