The term Oil Country Tubular Goods describes tubes that are used in oil and gas production: As a rule these include drill pipe, casing and tubing. Oil Country Tubular Goods are used both onshore and offshore. In the industry, they are also referred to by the acronym OCTG (for “Oil Country Tubular Goods”).

There are three main types of Oil Country Tubular Goods, which includes Drill pipe, Casing pipe and Tubing pipe.

Size Size w/t (“) Label 2 w/t (mm)

114.30mm 4-1/2″ 0.224 10.500 5.69
114.30mm 4-1/2″ 0.250 11.600 6.35
114.30mm 4-1/2″ 0.290 13.050 7.37
139.70mm 5-1/2″ 0.275 15.500 6.98
139.70mm 5-1/2″ 0.304 17.000 7.72
139.70mm 5-1/2″ 0.361 20.000 9.17
177.80mm 7-5/8″ 0.408 29.000 10.36
177.80mm 7-5/8″ 0.453 32.000 11.51
219.10mm 8-5/8″ 0.264 24.000 6.71
219.10mm 8-5/8″ 0.352 32.000 8.94
244.48mm 9-5/8″ 0.352 36.000 8.94
244.48mm 9-5/8″ 0.395 40.000 10.03
273.00mm 10-3/4″ 0.350 40.500 8.89
273.00mm 10-3/4″ 0.400 45.500 10.16