OCTG is the acronym for Oil Country Tubular Goods. OCTG is tube and pipe which is used in the production of oil and gas. This pipe is used both onshore and offshore for the production of oil and gas. Oil Country Tubular Goods are a collection of rolled metal products such as drill pipe, casing and tubing, line pipe, couplings, connections and accessories which are useful in the production of oil and gas.  These OCTG products are manufactured according to the specifications set by API (American Petroleum Institute).

Under the API specifications, OCTG oil and gas pipe is graded under more than ten different grades, depending on their performance and the materials used. OCTG products can be either seamless or welded. They are available in different sizes and lengths.