Buttress Casing Form Gauge 1228

Gauge Type: Single Dial Buttress Form Gauge
Thread Type: Buttress Casing 16~20″
Dial Type: 0~5~0, Balanced
Graduation: 0.0005″
Dial Travel: 0.020″

Description: The 1228 is a thread form gauge used to check the tooth thickness of either External or Internal API Buttress Casing in sizes from 16~20″. It utilizes an anvil with a fixed pin locator on the 10 Degree flank while the moveable point contacts pitch line of the 3 Degree flank for accurate readings. Product error is determined by first and “zeroing” the indicator on a setting standard. Due to the differences in thread form, a 1225-B Setting Standard is required for External threads and a 1224-B is needed for Internal threads. The measurement taken then indicates the deviation from the API Nominal.

Three Dial and Single Dial Gauges

The Three Dial and Single Dial gauges are convenient working gauges for controlling the basic thread form on API buttress casing. Their main role as a quick check of thread angles and tooth width during production help to control the manufacturing process and to evaluate incorrect or worn tooling.

External Buttress Specs

1231-D14 1/2Ext. Buttress Segment
1231-D25Buttress Segment
1231-D35 1/2Buttress Segment
1231-D46 5/8Ext. Buttress Segment
1231-D57Ext. Buttress Segment
1231-D67 5/8Ext. Buttress Segment
1231-D78 5/8Buttress Segment
1231-D89 5/8Buttress Segment
1231-D910 3/4Buttress Segment
1231-D1011 3/4Ext. Buttress Segment
1231-D1113 3/8Ext. Buttress Segment
1231-D1216Buttress Segment
1231-D1318 5/8Buttress Segment
1231-D1420Buttress Segment
Base and Segments for External Buttress
5 TPI, 3/4 TPF, Threads

Internal Buttress Specs

1232-D14 1/2Int. Buttress Segment
1221-D25Int. Buttress Segment
1231-D35 1/2Int. Buttress Segment
1232-D46 5/8Int. Buttress Segment
1232-D57Int. Buttress Segment
1232-D67 5/8Int. Buttress Segment
1232-D78 5/8Int. Buttress Segment
1232-D89 5/8Int. Buttress Segment
1232-D910 3/4Int. Buttress Segment
1232-D1011 3/4Int. Buttress Segment
1232-D1113 3/8Int. Buttress Segment
1232-D1216Int. Buttress Segment
1232-D1318 5/8Int. Buttress Segment
1232-D1420Int. Buttress Segment
Base and Segments for Internal Buttress 5 TPI, 3/4 TPF Threads


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