OCTG is the abbreviation of Oil Country Tubular Goods, it mainly refers to the piping products that applied in the oil and gas production (drilling activities). OCTG pipe normally is manufactured based on API or related standard specifications. It includes Drill pipe, Casing pipe and Tubing pipe.

OCTG Casing standards usually referred to API 5CT, Common Grades in J55/K55, N80, L80, C90, T95, P110 etc. Common length in R3. Casing pipe ends connection types usually in BTC and LTC, STC. and premium connections.

OCTG Tubing also in API 5CT in same material grades (J55/K55, N80, L80, P110 etc), different is Tubing diameters is upto 4 1/2”, and tubing ends in various types as BTC, EUE, NUE and premium. Most common is thicken connections EUE.