HS Code 39.17 – Tubes, pipes and hoses and fittings thereof (for example, joints, elbows, flanges), of plastics

HS code 3917 is a 4-digit heading in the Harmonized System that covers: Tubes, pipes and hoses and fittings thereof (for example, joints, elbows, flanges), of plastics. Heading 3917 encompasses a vast and essential category in international trade: tubes, pipes, and hoses, along with their associated fittings like joints, elbows, and flanges, all made of plastics. This classification is critical for importers, exporters, and customs brokers as it covers a broad spectrum of products vital for industries ranging from construction and infrastructure to agriculture, automotive, medical, and household applications. The scope includes both rigid and flexible plastic conduits, whether reinforced or unreinforced, designed for conveying liquids, gases, or granular materials. Key sub-categories involve materials like PVC (polyvinyl chloride), HDPE (high-density polyethylene), PP (polypropylene), and PEX (cross-linked polyethylene), each selected for specific properties such as chemical resistance, flexibility, or pressure rating. For trade compliance, accurate classification under 3917 ensures correct duty rates, adherence to product-specific regulations (e.g., potable water standards, medical device certifications), and proper application of trade agreements. Historically, the advent of plastic piping revolutionized plumbing and fluid transfer due to its corrosion resistance, light weight, and ease of installation compared to traditional metal alternatives. This heading is a fundamental component of Chapter 39, which deals with 'Plastics and articles thereof,' representing one of the primary forms in which plastics are shaped and utilized as finished or semi-finished goods.

PVC water pipes, HDPE drainage pipes, PEX plumbing tubing, garden hoses, medical-grade silicone tubing, electrical conduit pipes, flexible air ducts, agricultural irrigation drip lines, industrial chemical hoses, automotive fluid transfer lines, plastic pipe elbows, PVC T-joints, plastic pipe couplings, threaded plastic adapters, plastic pipe flanges, plastic reducer fittings, vacuum cleaner hoses, laboratory plastic tubing, swimming pool hoses, UPVC pressure pipes, polypropylene fittings, plastic-coated metal pipes (if plastic predominates), flexible corrugated conduit, plastic siphons, plastic drain traps.

Common misclassification errors under heading 3917 often arise from incorrect material identification or overlooking specific product characteristics. Traders sometimes confuse plastic pipes with those made of other materials, such as metal pipes (Chapter 73) or rubber hoses (Chapter 40), leading to significant duty discrepancies. Additionally, certain complex valves or pumps, even if primarily plastic, might be classified under Chapter 84 if they contain active mechanical components. Another mistake is classifying plastic pipes reinforced with other materials, which might fall under different headings if the reinforcement imparts essential character not covered here. The key differentiator is the 'of plastics' criterion, ensuring the material of the tube, pipe, hose, or fitting is predominantly plastic.

In 2025, the top exporters of HS code 3917 in UN Comtrade data were Germany ($5.0B, 14% of world exports), China ($4.9B) and the United States ($4.2B). World exports came to about $36.2B, adding countries' reported figures and partner-based estimates for those that did not report (UN Comtrade data). Countries that did not report 2025 data are estimated from partner records, which can understate them.

In 2025, the top importers of HS code 3917 in UN Comtrade data were the United States ($3.5B, 10% of world imports), Germany ($2.8B) and Mexico ($1.9B). World imports came to about $34.8B, adding countries' reported figures and partner-based estimates for those that did not report (UN Comtrade data). Countries that did not report 2025 data are estimated from partner records, which can understate them.

HS code 3917 is a 4-digit heading under Chapter 39 of the Harmonized System. The first 2 digits (39) identify the chapter, and digits 3-4 (17) specify the heading. This code contains multiple 6-digit subheadings for precise product classification.