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API Plug Gauge And Ring Gauge

Product description: 1.API Thread Gauges are used for gaging API internal & external threads, manufactured according to API 5B, API 7-2 & API 11B standard, including working gages and master gages.

2. The APISPEC 5B standard stipulates that commonly used casing threads are round threads (abbreviated as CSG) and buttress threads (abbreviated as BCSG).
3. API round thread gauges are divided into casing short round thread gauge (English abbreviation CSG) and casing long round thread casing gauge (LCSG). The English abbreviation of the tubing round thread gauge is TBG, which is subdivided into Non-upset tubing thread gauge (TBG) and External upset tubing thread gauge (UP TBG).

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Plug gauge and ring gauge API plug gauge and ring gauge size API plug gauge and ring gauge manufacturer used for gaging API internal API Thread Gauges used for gaging API external API Thread Gauges working gages API Plug Gauge master gages API Plug Gauge short round thread gauge long round thread casing gauge

Product Description

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Product Description

API Plug Gauges and Ring Gauges are precision inspection tools designed to verify the dimensional accuracy of threaded components, such as pipes, couplings, and connections, in compliance with API (American Petroleum Institute) standards (e.g., API 5B, 7-1, 7-2). Plug gauges inspect internal threads (e.g., box threads), while ring gauges check external threads (e.g., pin threads). These tools ensure tight tolerances, reliability, and interchangeability in critical oilfield equipment.

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Key Features

API Compliance
Manufactured to meet strict API specifications for thread form, pitch, taper, and diameter.
High Precision
Ground to tolerances as tight as ±0.0002 inches (5 μm) for critical thread dimensions.
Durable Materials
Made from hardened alloy steel, tungsten carbide, or ceramic for wear resistance and longevity.
Heat/Chemical Resistance
Withstand harsh environments, including high temperatures and corrosive drilling fluids.
Customization
Available in API standard sizes (e.g., 4½" to 20" casing threads) or custom designs.

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Advantages

✅ Quality Assurance

Minimize leaks, failures, and non-conformance in API-certified products.
✅ Cost Savings
Reduce downtime and scrap by detecting thread defects early in production.
✅ Interoperability
Ensure global compatibility for threaded connections in drilling, completions, and pipelines.
✅ Long Service Life
Hardened surfaces resist wear, even with frequent use.

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Oil & Gas: Inspect drill pipes, casing, tubing, and subsurface safety valves.
Manufacturing: Quality control for API-specification threading machines.
Maintenance: Verify thread integrity during equipment refurbishment.
Certification: Mandatory for API license holders and third-party inspectors.

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Comment & FAQ

1. How often should API gauges be recalibrated?

A: Annual recalibration is recommended, or per API audit requirements.

2. Can you supply gauges for non-API threads (e.g., metric)?

A: Yes – we design gauges for ISO, DIN, and proprietary thread standards.

3. What’s the lead time for custom API gauges?

A: Typically 4–6 weeks, depending on complexity.

4. Why choose tungsten carbide over alloy steel?

A: Ideal for high-volume inspection – 3–5x longer lifespan in abrasive conditions.

5. Do gauges include API certification documentation?

A: Yes – each gauge ships with a compliance certificate traceable to API standards.