API 5B- Casing, tubing and line pipe thread gauges - working

API ROUND THREAD CASING GAUGESapi gauge

 

What Are API 5B Thread Gauges?

API 5B thread gauges are precision instruments designed to check and measure the threads of casing, tubing, and line pipes according to the specifications set out in API 5B.

The gauges ensure that the threads meet the dimensional requirements to provide a secure and leak-proof connection.

API 5B is a specification developed by the American Petroleum Institute (API) that covers threading, gauging, and inspection of casing, tubing, and line pipe threads used in the oil and gas industry.

The purpose of these gauges is to ensure the compatibility, interchangeability, and integrity of threaded connections in pipelines and drilling systems.

All Northern Gauge 5B thread gauges are manufactured in accordance with API 5B and 5B 1latest edition
requirements.

 API ROUND THREAD CASING GAUGES
 SIZE  WORKING PLUG  WORKING RING
Casing  4.1/2”    
 Casing 5”    
 Casing 5.1/2”    
 Casing 6.5/8”    
 Casing 7”    
 Casing Gauges are .0625” included taper per inch (3/4” T.P.F.)


 API TUBING EUE AND NUE GAUGES
 SIZE  WORKING PLUG  WORKING RING
 1.050” X 10NUE/EUE    
 1.315 X 10 NUE/EUE    
 1.660 X 10 NUE/EUE    
 1.900 X 10 NUE/EUE    
 2.3/8” X 10 NUE/EUE    
 2.7/8” X 10 NUE/EUE    
 3.1/2” X 10 NUE/EUE    
 4” X 8 NUE/EUE    
 4.1/2” X 8 NUE/EUE    

Non-Upset and External Upset are .0625” included taper per inch (3/4” T.P.F.)

     



Note: All API 5B gauges come complete with handles and long form certification.

 

API LINE PIPE GAUGES

 

 

 API LINE PIPE GAUGES
 SIZE  WORKING PLUG  WORKING RING
 1/8" x 27    
1/4" x 18    
3/8" x 18    
1/2" x 14    
 3/4" x 14    
 1" x 11.5    
 1.1/4" x 11.5    
1.1/2" x 11.5    
 2" x 11.5    
2.1/2" x 11.5    
3" x 8    
3.1/2" x 8    
 4" x 8    
5" x 8    
 6" x 8    
Line Pipe Gauges are .0625” included taper per inch (3/4” T.P.F.)



Trademarks are the properties of their respective owner(s).

March 2025 , updated November 2009 CSS, September 2007

The descriptions, illustrations, specifications, dimensions, and part numbers are subject to change without notice.


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