CN code 730429 of the Combined Nomenclature covers other seamless steel casing and tubing used in oil and gas wells. Casing is permanently installed in the wellbore to protect the well walls, isolate aquifers and enable production. Tubing is placed inside the casing to transport extracted oil or gas to the surface. They are manufactured from carbon or low-alloy steel in grades H40, J55, K55, N80, L80, C90, T95, P110 or Q125 per API 5CT or ISO 11960. Classification under 730429 distinguishes these from drill pipe (730421) on the basis of function - casing and tubing remain in the well, while drill pipe is a moveable component. Casing diameters range from 114 mm to 508 mm (4 1/2 to 20 inches), and tubing from 60 mm to 114 mm. These are critical components for well integrity and production efficiency in hydrocarbon extraction.

Importing seamless casing and tubing under CN code 730429 into the EU is subject to Union Customs Code provisions and oil industry requirements. Pipes must comply with API 5CT (Casing and Tubing) or ISO 11960. Required documents include a commercial invoice with technical specification (diameter, wall thickness, steel grade, thread type, connection class), material certificate with mechanical and chemical test results, non-destructive and hydrostatic testing reports, transport documents and certificate of origin. From 1 January 2026, imports may be subject to CBAM. Pipes for corrosive environments (sour service) must additionally meet ISO 15156 requirements. Casing and tubing are not subject to PED as mining equipment. Importers should ensure compliance with the well operator's requirements and mining regulations of the operating country.

Seamless casing and tubing under CN code 730429 are subject to EU safeguard measures in TRQ form with an additional 25% duty. Anti-dumping duties on seamless steel pipes from China may cover subheading 730429. Imports from Russia and Belarus are subject to EU sanctions prohibitions. AD duties may also apply to pipes from India and Turkey - current status should be checked in TARIC. Casing and tubing are products of significant trade value, with major exporters including China, India, Japan, Korea and the USA. Preferential rates are available under free trade agreements provided rules of origin are met. Total import costs include MFN duty, AD/CVD duties, safeguard surcharge, CBAM charges and VAT. Current trade measures should be verified in TARIC.

The import procedure for other seamless casing and tubing (CN code 7304 29) into the European Union requires filing a customs declaration in the national import system. Essential documents include a commercial invoice, transport document, certificate of origin (for preferential tariff rates) and quality certificates confirming compliance with EN standards. Steel articles may be subject to EU safeguard measures and anti-dumping duties depending on the country of origin. The standard duty rate ranges from 0% to 3.7% depending on the specific TARIC subheading. Import VAT is charged on the.