Casing Tube
Cold worked and cold hardened (Cold-Drawn). Made of stainless steel.
The outer tubes are called casing. Casing lines the wellbore and thus protects the layers of soil and above all the groundwater from being contaminated by the drilling mud and/or frac fluids. It also stabilizes the wellbore, so casing must be able to withstand especially high loads. The drilling and casing alternate – the drill string is taken out at specific intervals and the wellbore is lined with casing and cemented. Then drilling continues.
The tubes have smooth surfaces and need to be threaded before being used as casing tubes.
Keywords
OF BASE METALS
PIPES AND TUBES
WITH CIRCULAR CROSS-SECTION
OF STAINLESS STEEL
Justification
Classification has been determined in accordance with the following:
For the purposes of determining the commodity codes within which goods most appropriately fall, reg 3 (1) of The Customs Tariff (Establishment) (EU Exit) Regulations 2020 sets out that the rules of interpretation contained in the following have effect – a. Part Two (Goods Classification Table Rules of Interpretation) of the Tariff of the United Kingdom (Reg 3(1)(a)); and b. Notes to a section or chapter of the Goods Classification Table (Reg 3(1)(b)).
GIR 1 has been used to classify this product by the terms of heading 7304: Tubes, pipes and hollow profiles, seamless, of iron (other than cast iron) or steel
GIR 2a has been used as the goods are unfinished
GIR 6 has been used to classify the goods to subheading level 730424: Casing, tubing and drill pipe, of a kind used in drilling for oil or gas; Other, of stainless steel
10 Digit code 7304240080: Other than of circular cross-section, of an external diameter not exceeding 406.4 mm and with a carbon equivalent value (cev) not exceeding 0.86 according to the international institute of welding (iiw) formula and chemical analysis
Also classified in accordance with:
Section Note (3) to Section XV
Section Note 9(e) to Section XV
Chapter Note 1(d) to Chapter 72
Chapter Note 1(e) to Chapter 72
Harmonized System Explanatory Note (HSEN's) to heading 73.04 (F)