Oil pipe thread gauges are specially designed for the petroleum oil industry to accurately measure thread taper, thread lead, thread height parameters for various oil pipes including casing pipes, drill pipes, and pipelines. These gauges are reasonably designed, composed of a rigid body, sensitive transmission system, and high-precision indicator gauges. They are convenient and reliable to use, effectively controlling and improving the quality of pipe threads. They are essential inspection tools in the acceptance process of oil pipe thread processing, and these thread gauges are fully comply with the provisions for testing instruments in international standards such as API 5B API Spec 7-2, and API Spec 11B.
In this article, we will mainly introduce several popular thread gauges.
The taper of a thread refers to the change in its pitch diameter over the length of the connection, typically expressed in inches per foot. For all API-governed connections, measuring this taper is an essential quality control step that is both an industry-wide practice and a compulsory inspection.
In industrial manufacturing, taper must be precisely measured and controlled. Taper errors in threaded connections under load can cause galling, poor fit, incorrect thread engagement, and compromised performance.
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External thread taper gauge features a measurement range of 8-6in (203.2-406.4mm) with 0.001in graduation. Custom measuring tips are available based on your specific thread measurement requirements. |
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Internal thread taper gauge used for measuring internal thread taper, measuring range 1-6in(25.4-152.4mm), supply two types measuring head, one is 1.829 measuring head for measuring 8 thread and 1.448 measuring head for measuring 10 thread. When you order, please let us know the thread type needs to be measured. |
Thread lead is arguably one of the most critical elements in thread manufacturing. Thread lead gages provide dimensional verification for both internal and external threads across various thread forms, directly validating the integrity specified on product prints. These gages operate by using contact points that seat within the part's threads. Thread lead is defined as the distance between corresponding points on adjacent threads, measured parallel to the thread's axis. The thread's pitch determines the required diameter of these contact points.
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External thread lead gauge is used for the measurement of all external thread pitch. We have different measuring tips for option, when you order, please let us know the thread type needs to be measured. |
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Internal thread lead gauge is used for the measurement of internal thread pitch small than 5 1/2in. We have different measuring tips for option, when you order, please let us know the thread type needs to be measured. |
3.Thread Height Gauge
Thread height gauges measure the thread height for both internal and external connections across various forms and sizes, including tapered and straight threads. We offer numerous models for external threads. When ordering, specifying the thread type is essential. These gages utilize a range of interchangeable contact points, from our standard threaded-shank contact points to specialized points designed for specific thread forms.
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Internal thread height measuring instrument, used for the measurement of external thread height small than 5 1/2in(139.7mm). We have different measuring tips for option, when you order, please let us know the thread type needs to be measured. |
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Internal thread height measuring instrument, used for the measurement of internal thread height small than 5 1/2in(139.7mm). We have different measuring heads for option, when you order, please let us know the thread type needs to be measured. |
When you order, please let us know the thread type and range need be measured, we will provide you suitable measurement solutions.
More details or any questions please contact: xakmtools@vip.163.com or WhatsApp: +86 17765006916
