The hydraulic pipe fittings how to distinguish the British, American, metric!
Metric threads are represented by pitch, and American and English threads are expressed in thread per inch;Metric thread is 60 degrees equilateral tooth type, thread is isosceles 55 degree tooth type, thread is isosceles 60 degree tooth type;
Also known as the metric metric tube thread pipe thread, 6810 diameter (pitch diameter of 12141618202224 (1); 1.5; 2730333639424548525660 (pitch) diameter pitch 2), divided into cylindrical and tapered pipe thread pipe thread, with the way into the column, cone and cone, cone two.
Metric thread tooth angle of 60 degrees, fine teeth; British American pipe thread pitch, basically the same, but the BSP screw tooth angle is 55 degrees, American pipe thread angle is 60 degrees. The difference between the metric and inch pipe screw thread, the:
