39173100
PLASTICS AND ARTICLES THEREOF›Tubes, pipes and hoses, and fittings therefor (for example, joints, elbows, flanges), of plastics
Other tubes, pipes and hoses - Flexible tubes, pipes and hoses, having a minimum burst pressure of 27,6 MPa
Product characteristics and tariff classification
CN code 391731 covers flexible tubes and hoses of plastics, having a minimum burst pressure of 27.6 MPa (approximately 276 bar). These are high-pressure hoses used in hydraulics, pneumatics, the petroleum industry, mining and fire protection systems. They are typically reinforced with braids of synthetic or metal fibres and may be fitted with fittings. Base materials commonly include polyamides, polyurethanes, PTFE and thermoplastic elastomers. Classification under CN 391731 requires documentation that the hose withstands a pressure of at least 27.6 MPa. Hoses with lower working pressure are classified under CN 391732 or 391733.
Technical requirements and safety
Pressure hoses imported into the EU must comply with relevant safety standards. Hydraulic hoses are subject to the EN 853, EN 854, EN 856 and EN 857 standard series depending on construction type and working pressure. The Machinery Regulation (EU) 2023/1230 applies to hoses as machine components. Gas hoses are subject to EN ISO 3821. Import of hoses is subject to REACH regarding polymers and plasticisers. Hoses for drinking water contact must comply with Directive (EU) 2020/2184. Each pressure hose should bear markings identifying the manufacturer, working pressure and date of manufacture.
International trade and customs practice
Customs declarations for pressure hoses under CN 391731 should specify the base material, reinforcement type, working pressure (confirming minimum 27.6 MPa), internal diameter and intended use. Major exporters of pressure hoses to the EU include China, the United States, Taiwan and Japan. Preferential duty rates may be available under FTA agreements. Transport of pressure hoses is not subject to ADR regulations. Verification of rates in TARIC is recommended. High-pressure hydraulic hoses may be subject to safety standards verification by market surveillance authorities.
Properties of Flexible tubes withstanding min. 27.6 MPa and trade applications
Products classified under CN code 3917 31 as construction products fall under the Construction Products Regulation CPR (EU) 305/2011. Import requires CE marking, Declaration of Performance (DoP) and compliance with relevant harmonised EN standards. Customs clearance requires certification documents, installation instructions and technical data sheets. Products must meet fire reaction class and mechanical resistance requirements.
Frequently asked questions
How is the 27.6 MPa requirement for CN 391731 confirmed?
The manufacturer's technical documentation must include a specification of the working pressure or burst pressure. A test certificate or manufacturer's declaration of conformity confirming a working pressure of at least 27.6 MPa is sufficient evidence. Customs authorities may request laboratory testing of a sample.
Are hydraulic hoses with steel braiding classified under CN 391731?
Yes, provided the base material is plastic and the hose withstands at least 27.6 MPa. Steel braiding is reinforcement, but classification is determined by the core material. If the core is rubber, the hose is classified in Chapter 40.
Are hoses with fittings classified under the same code?
Hoses fitted with connectors (fittings) at the ends are classified under the same code 391731, provided they meet the pressure criterion. Fittings are an integral part of the hose and do not change the tariff classification.
Do products CN 3917 31 require CE marking for EU import?
Yes, products CN 3917 31 as construction products require CE marking under CPR (EU) 305/2011. A Declaration of Performance (DoP) and compliance with the relevant harmonised EN standard are mandatory.
Useful tools & resources
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