光端焊接精密钢管 交货技术条件 ISO 3305 - 1985

　　This International Standard specifies the technical conditions for delivery of welded tubes with plain ends, manufactured from the grades of steel shown in table 2, with precision dimensional tolerances and in those dimensions shown in table 9 which have been selected from IS0 4200.

　　Tubes in accordance with this International Standard are used mainly for purposes where importance attaches to dimensional accuracy and, if required, small thicknesses and surface finish.

　　If such tubes are intended for use in hydraulic piping equip-ment, they shall be used only in the annealed or normalized delivery condition.

　　规定了管材的技术条件。 列出了化学成分和机械性能以及尺寸范围从 4 mm到160 mm（外径）和测试。用于液压管道设备时，它们只能在退火或正火状态下使用。

　　1985年 ISO 3305：1985 光端焊接精密钢管 交货技术条件

　　1976年 ISO 3305：1976 平头焊接精密钢管 交货技术条件