“G” PIPE gauges are manufactured according to the ISO 228-2 standards.
|Thread Plugs||G 1/16 to G 6 inch|
|Thread Rings||G 1/16 to G 6 inch|
|Diameter||Pitch||Tolerance class||Tolerance class|
|Metric||Thread Plug||Thread Ring|
|G 1/16||28 TPI||General||A & B|
|G 1||11 TPI||General||A & B|
|G 4||11 TPI||General||A & B|
|G 6||11 TPI||General||A & B|
THREAD GAUGE PROFILE
Acceptance Criteria for GO/NOT GO Gauge
GO Gauge: When the GO gauge enters and passes the complete length of the work piece thread under the condition that it is screwed by hand and does not use excessive force.
NOT GO Gauge: When the NOT GO gauge do not enter the component by more than two turns of the thread from both ends under the condition that it is screwed by hand and does not use excessive force .