CN code 730630 covers other welded steel tubes of circular cross-section up to 406.4 mm diameter, not under line pipe (730611/619) or casing/tubing (730621/629). These are ERW, SAW or other welded tubes for general industrial use: water, gas, heating installations, structures, machine components and fluid transport. Produced from carbon steel S195T-S355J2H per EN 10217 (pressure) or EN 10219 (structural). Diameters 21 mm to 406 mm. This is one of the most widely traded welded tube subheadings.

Importing under CN 730630 into the EU follows Union Customs Code. Pressure tubes under PED 2014/68/EU, structural under CPR (EU) No 305/2011. EN 10217 for pressure, EN 10219 for structural, EN 10255 for threaded. Required documents: commercial invoice, material certificate EN 10204, weld inspection reports, transport documents and certificate of origin. From 1 January 2026, CBAM may apply. Drinking water pipes require hygienic approval.

Pipes under CN 730630 are subject to EU safeguard measures with 25% additional duty. AD duties apply to pipes from China, India or Turkey - check TARIC. Imports from Russia and Belarus sanctioned. Welded circular tubes up to 406 mm are among the largest steel tube market segments. Major suppliers: China, India, Turkey and EU. Total costs: MFN duty, AD, safeguard, CBAM, VAT. Current rates in TARIC.

Products classified under CN code 7306 30 (other welded circular steel tubes) must comply with applicable EU technical standards. Depending on their intended use, these may include harmonised EN standards for construction products (CPR Regulation 305/2011), the Machinery Directive or the Pressure Equipment Directive (PED). Construction products require CE marking and a Declaration of Performance (DoP). Customs authorities verify compliance with technical requirements during clearance and may withhold release of goods where required documentation or certificates are missing.