Tapered threads are a signature feature of API Tubing & Casing connections. Measuring thread taper is not only an industry wide practice, it is an API Specification 5B mandated inspection. During the manufacturing process, taper must be accurately measured and quantified to stay within the required specification limits. When subjected to a service load, taper error on threaded tubing and casing connections can lead to galling, improper fit, and reduced performance.
External taper gages inspect variation in external thread taper. Unless specified otherwise, external taper gages are shipped with .072” diameter contact points (T072) as standard. Refer to the chart on the following page for the proper contact point for your particular connection. Each gage requires two contact points. Higher resolution indicators are available.
More details please contact: sales@bestogages.com
