73079100
ARTICLES OF IRON OR STEEL›Tube or pipe fittings (for example, couplings, elbows, sleeves), of iron or steel
Other - Flanges
Subcodes (1)
Classification of steel flanges - CN 730791
CN code 730791 covers pipe flanges of iron or steel other than stainless. Flanges enable detachable bolted connections between pipes, valves and equipment. Carbon and low-alloy steel flanges constitute the majority of the flange market, used in water, gas, steam, oil and industrial installations. Produced by forging, casting or machining from P245GH, P250GH, 16Mo3 and other grades per EN 1092-1 or ASME B16.5. Types include welding neck, slip-on, blind, lap joint, socket weld and threaded. Pressure classes PN6-PN400 (EN) or Class 150-2500 (ASME). Classification requires non-stainless steel material and flange form.
Import requirements and PED for flanges CN 730791
Importing under CN 730791 follows Union Customs Code. Pressure flanges under PED 2014/68/EU with CE marking and declaration of conformity. EN 1092-1 specifies dimensional and material requirements. Documents: commercial invoice with specification (type, nominal diameter, pressure class, steel grade, standard), material certificate EN 10204 type 3.1, transport documents, certificate of origin. From 1 January 2026, CBAM may apply.
Trade measures for steel flanges CN 730791
Flanges under 730791 subject to EU safeguard TRQ with 25% additional duty. AD duties on steel flanges from China and India - check TARIC for current status and rates. Imports from Russia/Belarus sanctioned. Preferential rates under FTAs. Steel flanges are among the largest pipe fitting market segments. Major suppliers: China, India, Korea, Italy, Spain, Germany. Total costs: MFN, AD, safeguard, CBAM, VAT. TARIC for current rates.
Customs classification of steel pipe flanges (CN 7307 91)
CN code 7307 91 of the Combined Nomenclature covers steel pipe flanges within Chapter 73, which deals with articles of iron or steel. Classification in this chapter is based on the type of article, its intended use, manufacturing method (casting, forging, welding, stamping) and base material (cast iron, non-alloy steel, stainless steel or alloy steel). Correct classification requires analysis of technical documentation. Where classification is uncertain, importers can obtain Binding Tariff Information (BTI) ruling from customs authorities, valid for three years throughout the EU.
Frequently asked questions
How do steel flanges (730791) differ from stainless (730721)?
730791 covers carbon and low-alloy steel flanges (non-stainless), 730721 covers stainless steel flanges. The distinguishing criterion is material. Carbon steel flanges are cheaper and used in most standard installations. Stainless flanges for corrosive environments.
What standards apply to steel flanges?
Round flanges under EN 1092-1 (European, classes PN6-PN400) or ASME B16.5 (American, Class 150-2500). EN 1092-1 specifies dimensions, materials and strength requirements. Material certificate EN 10204 type 3.1 mandatory. Pressure flanges require CE marking under PED.
Are steel flanges (CN 730791) subject to CBAM?
From 1 January 2026, CBAM enters full operation. Flanges as steel products under Chapter 73 may be subject to CBAM per Annex I of Regulation (EU) 2023/956. Verify scope for 730791 and comply with registration and emissions reporting if covered.
What is the EU duty rate for CN code 7307 91 in 2026?
The duty rate for CN code 7307 91 (steel pipe flanges) is set in the TARIC tariff and depends on the country of origin. Preferential rates may apply under EU trade agreements. The current rate can be checked in the European Commission's TARIC.
Useful tools & resources
Customs calculators
Duty & VAT CalculatorCalculate customs duty and VAT for "Other - Flanges" and see the full import cost.CBAM CalculatorCalculate the CBAM (Carbon Border Adjustment Mechanism) fee for CO2 emissions linked to your import.Import Profitability CalculatorCheck the import profitability of "Other - Flanges" with all costs included.
Related glossary terms