螺纹塞规和环规解析：塞规：采用滚珠轴承钢或高强度铝合金制造，硬度高、耐磨，尺寸稳定可靠，辅以彩色阳极氧化表面处理，造型美观，轻巧方便。

环规：用于测量外螺纹尺寸的正确性，通端为一件，止端为一件。螺纹环规止端在外圆柱面上有凹槽。当尺寸在100毫米以上时，螺纹环规为双柄型式。螺纹环规规格分为粗牙、细牙、管子螺纹三种。
     Wear special thread plug gauge steel, hardened and polished NO and NOGO clearly marked on the plug ends meet German DIN7162 tolerance H6 quality production standards. Thread plug gauge is a measure of the correctness of internal thread size of the tools can be divided into ordinary coarse teeth, fine pitch and three types of pipe thread. Pitch of 0.35 mm or two smaller than 2 accuracy and precision of screw thread ring gauge and pitch of 0.8 mm or smaller three precision thread ring not only the end. Thread plug gauge for comprehensive testing and integration testing within the male thread. If measured with the screw threads can be combined by rotating through regulation, and regulation ended with the threads together by incomplete rotation (screw only the rules allowing only two rotation together with the measured screw, rotary joint volume no more than two pitch), it indicates that The role of the thread measured in diameter did not exceed the maximum physical tooth type in the path, and one in diameter does not exceed the minimum physical tooth type in the path, then you can guarantee that spin together and joint strength, the thread measured in diameter qualified.

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