螺旋口玻璃钢管道口连接螺纹本实用新型涉及一种玻璃钢管道的管口连接螺纹，属于玻璃钢管道技术领域。 The utility model relates to a glass pipe connecting thread spout, belonging to the glass pipe technology. 该玻璃钢管道的管口连接螺纹包括螺距控制项、牙顶圆半径控制项、牙型高控制项、牙型角控制项、牙根圆半径控制项及锥度控制项，所述螺距为6.30mm～6.40mm，所述牙顶圆半径为1.49mm～1.51mm，所述牙型高为1.890mm～1.900mm，所述牙型角为44°～46°，所述牙根圆半径为1.44mm～1.46mm，所述锥度为1：（27～29）。 

The glass pipe connecting thread spout controls including pitch, tooth tip circle radius control, high control tooth type, tooth type angle control, root radius controls and taper controls the pitch of 6.30mm ~ 6.40 mm, the tooth tip circle radius of 1.49mm ~ 1.51mm, the tooth-height 1.890mm ~ 1.900mm, the tooth type angle of 44 ° ~ 46 °, the root radius of 1.44mm ~ 1.46mm , the taper of 1: (27 ~ 29). 优选方案螺距为6.35mm，牙顶圆半径为1.50mm，牙型高为1.895mm，牙型角为45°，牙根圆半径为1.45mm，锥度为1：28。 Preferred embodiment of the pitch of 6.35mm, tooth tip circle radius of 1.50m28。 Preferred embodiment of the pitch of 6.35mm, tooth tip circle radius of 1.50mm, tooth-height of 1.895mm, tooth-angle is 45 °, the root circle radius of 1.45mm, taper 1:28. 该螺纹根部强度高、螺纹牙粗、螺纹锥度小、密封性能好且易于安装。 The high strength thread root, coarse thread, thread taper, sealing performance and easy to install.