HS Heading 3917 : Tubes, pipes and hoses and fittings therefor (for example, joints, elbows, flanges), of plastics
HEADING DEFINITION & DISAMBIGUATION
HS Heading 3917 encompasses tubes, pipes and hoses and fittings therefor (for example, joints, elbows, flanges), of plastics. It classifies 10 6-digit WCO subheadings within Chapter 39 under the Harmonized System [USITC HTS 2026].
Subheadings Under Heading 3917
| HS Code | WCO 6-Digit Subheading Description | Chapter | Operational Package |
|---|---|---|---|
| 3917.10 | Artificial guts (sausage casings) of hardened protein or of cellulosic plastics materials | 39 | View 3917.10 Package → |
| 3917.21 | Tubes, pipes and hoses, rigid, Of polymers of ethylene | 39 | View 3917.21 Package → |
| 3917.22 | Tubes, pipes and hoses, rigid, Of polymers of propylene | 39 | View 3917.22 Package → |
| 3917.23 | Tubes, pipes and hoses, rigid, Of polymers of vinyl chloride | 39 | View 3917.23 Package → |
| 3917.29 | Tubes, pipes and hoses, rigid, Of other plastics | 39 | View 3917.29 Package → |
| 3917.31 | Other tubes, pipes and hoses, Flexible tubes, pipes and hoses, having a minimum burst pressure of 27.6 MPa | 39 | View 3917.31 Package → |
| 3917.32 | Other tubes, pipes and hoses, Other, not reinforced or otherwise combined with other materials, without fittings | 39 | View 3917.32 Package → |
| 3917.33 | Other tubes, pipes and hoses, Other, not reinforced or otherwise combined with other materials, with fittings | 39 | View 3917.33 Package → |
| 3917.39 | Other tubes, pipes and hoses, Other | 39 | View 3917.39 Package → |
| 3917.40 | Fittings | 39 | View 3917.40 Package → |
DISAMBIGUATION & CLASSIFICATION GUIDE
How to Select the Correct Subheading Under Heading 3917
Commercial shipments must be declared under the exact 6-digit WCO subheading that matches physical, chemical, or processing characteristics. Review the subheading descriptions above and verify against binding CBP CROSS rulings prior to entry filing.
Official Primary Sources & Authority References
USITC HTS Heading 3917 ↗
United States International Trade Commission official Harmonized Tariff Schedule.
CBP CROSS Rulings ↗
CBP e-Rulings database for Heading 3917 precedent rulings.
WCO Nomenclature ↗
World Customs Organization Harmonized System 2022 nomenclature standard.
U.S. Census Foreign Trade ↗
U.S. Census Bureau HTS-to-NAICS concordance and Schedule B export database.
Heading 3917 Frequently Asked Questions (FAQ)
What commercial articles are grouped under HS Heading 3917?
HS Heading 3917 covers Tubes, pipes and hoses and fittings therefor (for example, joints, elbows, flanges), of plastics, grouping 10 6-digit WCO subheadings.
How are 6-digit subheadings structured under Heading 3917?
Subheadings under Heading 3917 range from 3917.11 to 3917.90, classifying goods by processing state, origin, or material composition.
What is the representative US import duty rate for Heading 3917?
US MFN general duty rates for Heading 3917 commodities range from Duty-Free up to representative ad valorem percentages under the 2026 US HTS.
Are Section 301 tariffs applicable to goods under Heading 3917?
Section 301 additional tariffs depend on the specific 8-digit or 10-digit US HTS code and country of origin (e.g. China Lists 1–4A).
What PGA message set flags apply to Heading 3917?
Partner Government Agency flags (FDA, USDA APHIS, EPA) apply depending on the specific commodity sub-classification.
How do I distinguish between subheadings under Heading 3917?
Review WCO subheading terms and candidate descriptions. For example, unroasted vs. roasted or decaffeinated vs. non-decaffeinated.
Can goods under Heading 3917 enter duty-free under USMCA?
Yes. Goods originating in USMCA territories (US, Mexico, Canada) enter duty-free under SPI code P with a valid Certificate of Origin.
What is the Section 321 de minimis limit for Heading 3917?
Eligible import shipments valued at $800 USD or less imported by one person on one day enter duty-free under 19 U.S.C. 1321.
What documents are required for formal customs entry of Heading 3917?
Commercial Invoice, Packing List, Bill of Lading, and CBP Form 7501 are mandatory for entries exceeding $2,500 USD.
How can an importer get a binding CBP classification ruling for Heading 3917?
Importers may apply for a binding ruling via CBP National Commodity Specialist Division under 19 CFR Part 177.