ICS77.140.75H48中华人民共和国国家标准GB/T32957—2016液压和气动系统设备用冷拔或冷轧精密内径无缝钢管Cold-drawnorcold-rolledprecision...
ICS77.140.75H48中华人民共和国国家标准GB/T3094—2012代替GB/T3094—2000冷拔异型钢管Colddrawnshapedsteeltubes2012-05-11发布2013-02-01...
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GB/T3094-2000前言本标准非等效采用美国ASTMA500-1990《结构用碳素钢冷成型圆截面和异型截面焊接钢管和无缝钢管》。主要差异是增加了产品品...
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冷拔或冷轧精密无缝钢管Seamlesscold-drawnorcold-rolledsteeltubesforprecisionapplications2009-10-30发布2010-05-01实施中华人民共和国...
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