Thread Form - the outline of the thread, for example 8 Round or Buttress. Our example is an 8 Round. Pitch Line - imaginary line that runs through the thread where the distance between parallel sides of the profiles of two adjacent thread forms is measured along the axis. Crest – the peak or top of the thread that joins the sides of two adjacent flanks. Root – the bottom of the thread valley or the bottom surface joining the sides of two adjacent flanks. Included Angle – the angle between the thread flanks as measured perpendicular to the thread axis. Stab Flank – the side of the thread that takes the initial force when a pin and coupling are tightened. Load Flank – the side of the thread that absorbs the surface load as the pin and coupling are tightened.
These high precision instruments are more than 20 kinds and widely used for oil industry to measure the monomial parameters of taper, pitch and height screw for oil pipe, canola and drill shank. It is constituted by the transmission system of rigidity main body and indicator to control and improve the quality of screw. It is the basic tools to measure the oil pipe screw thread and completely accord with international standard AP158. standard No: JJF 1063-2000
Since last several months, the packing is upgraded into flight cases from wooden boxes. It looks beautiful and gives good protection.
This year, we have decided to include ASME gauges into our product line, so that we can provide more comprehensive support & help to our customers.
Tooth thickness is now a required, mandatory element to be inspected.