Oil Country
tubular goods (OCTG) are a family of seamless rolled
Steel products primarily used in the
Oil and Gas industry. OCTG encompasses a wide range of products, including
drill Pipe ,
Casing ,
Tubing line pipe, and
Coupling s. These products are manufactured to meet the specific requirements of the oil and gas industry, such as
high pressure,
Corrosion resistance , and extreme temperatures.
API 5cl80 Casing Tubing Thread API Round Thread and Buttress Thread Labels a Calculated Mass c Nominal Linear Mass T& C b,c Wall Thick- ness e m , Mass Gain or Loss Due to End Finishing d Outside Diameter Inside Diameter Drift Diameter Plain- end kg Round Thread Buttress Thread w pe D kg/m t D mm kg/m Short Long RC SCC mm mm mm 1 2 3 4 5 6 7 8 9 10 11 12 4 1/2 9.5 114.3 14.38 5.21 103.88 100.7 14.02 3.64 — — 4.53 — 1.12 4 1/2 10.5 114.3 15.73 5.69 102.92 99.74 15.24 3.33 — 3.61 4.32 0.91 4 1/2 11.6 114.3 17.38 6.35 101.6 98.42 16.91 3.18 3.35 4.07 0.6 4 1/2 13.5 114.3 19.87 7.37 99.56 96.38 19.44 — 3.53 3.64 0.24 4 1/2 15.1 114.3 22.69 8.56 97.18 94 22.32 — 5 11.5 127 17.19 5.59 115.82 112.64 16.74 4.32 — 4.85 — 5.38 — 1.24 5 13 127 19.69 6.43 114.14 110.96 19.12 4 4.51 4.99 0.61 5 15 127 22.69 7.52 111.96 108.78 22.16 3.71 4.52 4.4 0.22 5 18 127 27.19 9.19 108.62 105.44 26.7 — 3.45 3.76 –0.62 5 21.4 127 32.13 11.1 104.8 101.62 31.73 — 3.15 3.42 –0.96 5 23.2 127 34.76 12.14 102.72 99.54 34.39 — 2.99 3.23 –1.14 5 24.1 127 36.15 12.7 101.6 98.42 35.8 — 5 1/2 14 139.7 20.91 6.2 127.3 124.12 20.41 4.6 — 5.26 — 5.71 — 0.87 5 1/2 15.5 139.7 23.48 6.98 125.74 122.56 22.85 4.36 5.31 5.41 0.58 5 1/2 17 139.7 25.72 7.72 124.26 121.08 25.13 4.14 4.5 4.84 0.45 5 1/2 20 139.7 30.05 9.17 121.36 118.18 29.52 — 4.37 4.31 -0.52 5 1/2 23 139.7 34.05 10.54 118.62 115.44 33.57 — — — — 5 1/2 26.8 139.7 40.15 12.7 114.3 111.12 39.78 — — — — 5 1/2 29.7 139.7 44.47 14.27 111.16 107.98 44.14 — — — — 5 1/2 32.6 139.7 48.74 15.88 107.94 104.76 48.49 — — — — 5 1/2 35.3 139.7 52.8 17.45 104.8 101.62 52.61 — — — — 5 1/2 38 139.7 56.82 19.05 101.6 98.42 56.68 — — — — 5 1/2 40.5 139.7 60.64 20.62 98.46 95.28 60.55 — — — — 5 1/2 43.1 139.7 64.41 22.22 95.26 92.08 64.38 — 6 5/8 20 168.28 29.76 7.32 153.64 150.46 29.06 5.58 6.23 6.35 0.89 6 5/8 24 168.28 35.72 8.94 150.4 147.22 35.13 4.42 5.48 5.52 0.68 6 5/8 28 168.28 41.67 10.59 147.1 143.92 41.18 — 4.73 4.71 –0.75 6 5/8 32 168.28 47.62 12.06 144.16 140.98 46.46 — 4.73 4 –1.46
OCTG is produced in a variety of
grade s and sizes, depending on the application. The most common grades are API 5CT and
API 5L , which are used for drilling and
production operations. The most common sizes are 2 3/8”, 2 7/8”, 3 ½”, 4 ½”, 5 ½”, and 7”. The
Wall thickness of OCTG is also determined by the application, with thicker walls being used for higher pressure applications.
OCTG is manufactured using a variety of
process es, including hot rolling, cold rolling, and heat treating. The steel is then tested for quality and strength before being shipped to the customer. OCTG is typically coated with a corrosion-resistant
Material to protect it from the elements.
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tubing near me tubing connector Tubing Pipe OCTG is an essential component of the oil and gas industry, providing the infrastructure necessary to safely and efficiently transport oil and gas from the
wellhead to the refinery. Without OCTG, the oil and gas industry would not be able to operate.
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