Chinese Standard: GB/T 3639-2009

Seamless cold-drawn or cold-rolled steel tubes for precision applications

MOD  EN 10305-1:2002

全国钢标准化技术委员会

本标准规定了冷拔或冷轧精密无缝钢管的分类、代号、尺寸、外形、重量及允许偏差、技术要求、试验方法、检验规则、包装、标志和质量证明书。
本标准适用于制造机械结构、液压设备、汽车零部件等具有特殊尺寸精度和高表面质量要求的冷拔或冷轧精密无缝钢管。

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