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校准部分减短的机用和手用丝锥俄罗斯姊妹河工具厂开发了一种在碳素结构钢、合金结构用和灰铸铁的速孔成立孔导件中攻制６ＩＩ级精度的Ｍ１２～Ｍ３９米制螺纹（３（Ｘｙｌ’－４７０—ｓｌ）和Ａ级精度的ｏｆ／ｙ～ｏｆｆ／ｙ圆往管螺纹（ｒＣＫｆｌ’６３５７一＠１）用...
Calibration of partially shortened machine and hand taps Russia’s Sister River Tool Works has developed a 6-12-level M12 to M39 metric-meter accuracy hole-formed hole guide in carbon structural steel, alloy construction and gray cast iron Thread (3 (Xyl’-470-sl) and Grade A precision of / y ~ off / y round pipe thread (rCKfl’6357-1 1) with ...