1 |
Seamless stainless steel line pipe of a kind used for oil or gas pipelines |
730411 |
2 |
Seamless iron or steel line pipe of a kind used for oil or gas pipelines, other than line pipe made of stainless steel or cast iron |
730419 |
3 |
Seamless iron or steel drill pipe of a kind used in drilling for oil or gas, other than drill pipe made of cast iron |
730422 and 730423 |
4 |
Seamless iron or steel tubing of a kind used in drilling for oil or gas, other than tubing made of cast iron |
730429 |
5 |
Iron or steel line pipe of a kind used for oil or gas pipelines that has circular cross-sections and an external diameter exceeding 406.4 mm |
730511, 730512 and 730519 |
6 |
Iron or steel casing of a kind used in drilling for oil or gas that has circular cross-sections and an external diameter exceeding 406.4 mm |
730520 |
7 |
Welded iron or steel line pipe of a kind used for oil or gas pipelines that has an external diameter not exceeding 406.4 mm, other than line pipe made of cast iron |
730611 and 730619 |
8 |
Welded casing and tubing of a kind used in drilling for oil or gas that has an external diameter not exceeding 406.4 mm and is made of flat-rolled steel or iron products, other than casing and tubing made of cast iron |
730621 and 730629 |