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API Gauge

API gauge API gauges API gauge conform:

API spec 5B-0029
API gauge (Casing Round Thread)
Gauge Code Outer dia. Ø Taper Gauge Code Outer dia. Ø Taper
4 1/2 (CSG,LCSG) 114.30 1:16 8 5/8 (CSG,LCSG) 219.08 1:16
5 (CSG,LCSG) 127.00 9 5/8 (CSG,LCSG) 244.48
5 1/2 (CSG,LCSG) 139.70 10 3/4 (CSG,LCSG) 273.05
6 5/8 (CSG,LCSG) 168.28 11 3/4 (CSG,LCSG) 298.45
7 (CSG,LCSG) 177.80 13 3/8 (CSG,LCSG) 339.73
7 5/8 (CSG,LCSG) 193.68 16 (CSG,LCSG) 406.40
The pitch of API gauges:3.175(8); The form angle of API thread gauge:60°
API gauge (Buttress Casing Thread)
Gauge Code Outer dia. Ø Taper Gauge Code Outer dia. Ø Taper
4 1/2 BCSG 114.30 1:16 8 5/8 BCSG 219.08 1:16
5 BCSG 127.00 9 5/8 BCSG 244.48
5 1/2 BCSG 139.70 10 3/4 BCSG 273.05
6 5/8 BCSG 168.28 11 3/4 BCSG 298.45
7 BCSG 177.80 13 3/8 BCSG 339.73
7 5/8 BCSG 193.68 16 BCSG 406.40 1:12
The pitch of API gauges:5.08(5); The form angle of API thread gauge:3°, 10°.
API gauge (Non-upset Tubing Thread)
Gauge Code Outer dia. Ø Pitch Taper Gauge Code Outer dia. Ø Pitch Taper
1.050 TBG 26.67 2.54(10) 1:16 2 7/8 TBG 73.03 2.54(10) 1:16
1.315 TBG 33.40 2.54(10) 3 1/2 TBG 88.90 2.54(10)
1.660 TBG 42.16 2.54(10) 4 TBG 101.60 3.175(8)
1.900 TBG 48.26 2.54(10) 4 1/2 TBG 114.30 3.175(8)
2 3/8 TBG 60.33 2.54(10)    
The form angle of API gauges:60°
API gauge (External-upset Tubing Thread)
Gauge Code Outer dia. Ø Pitch Taper Gauge Code Outer dia. Ø Pitch Taper
1.050 UPTBG 26.67 2.54(10) 1:16 2 7/8 UPTBG 73.03 3.175(8) 1:16
1.315 UPTBG 33.40 2.54(10) 3 1/2 UPTBG 88.90 3.175(8)
1.660 UPTBG 42.16 2.54(10) 4 UPTBG 101.60 3.175(8)
1.900 UPTBG 48.26 2.54(10) 4 1/2 UPTBG 114.30 3.175(8)
2 3/8 UPTBG 60.33 3.175(8)    
The form angle of API gauges:60°
API gauge (Line Pipe Thread)
Gauge Code Outer dia. Ø Pitch Taper Gauge Code Outer dia. Ø Pitch Taper
1/8 LP 3.18 0.941(27) 1:16 2 1/2 LP 63.50 3.175(8) 1:16
1/4 LP 6.35 1.411(18) 3 LP 76.20 3.175(8)
3/8 LP 9.53 1.411(18) 3 1/2 LP 88.90 3.175(8)
1/2 LP 12.70 1.814(14) 4 LP 101.60 3.175(8)
3/4 LP 19.05 1.814(14) 5 LP 127.00 3.175(8)
1 LP 25.40 2.209(11 1/2) 6 LP 152.40 3.175(8)
1 1/4 LP 31.75 2.209(11 1/2) 8 LP 203.20 3.175(8)
1 1/2 LP 38.10 2.209(11 1/2) 10 LP 254.00 3.175(8)
2 50.80 2.209(11 1/2)    
The form angle of API gauges:60°

  Reference hyperlink:  API gage.