HTS heading 3917 · Chapter 39
HTS 3917: Tubes, pipes and hoses and fittings therefor, of…
HTS heading 3917 covers tubes, pipes and hoses and fittings therefor (for example, joints, elbows, flanges), of plastics. It has 12 tariff lines with a duty rate; the general (MFN) rates are 3.1% (8 lines), 6.5% (1 line), Free (1 line) and others.
Imports may also owe Chapter 99 tariffs (Section 232, 301 or 201) depending on origin and date, plus the Merchandise Processing Fee and, by sea, the Harbor Maintenance Fee.
Rates from the 2026 HTS Revision 22, effective October 30, 2026. Source: U.S. International Trade Commission.
Tariff lines and duty rates
| HTS code | Description | General | Special | Column 2 | Estimate |
|---|---|---|---|---|---|
| 3917.10 | Artificial guts (sausage casings) of hardened protein or of cellulosic plastics materials: | ||||
| 3917.10.10.00 | Of cellulosic plastics materials[kg] | 6.5% | Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) | 60% | Estimate → |
| Other: | |||||
| 3917.10.60.00 | Of collagen[kg] | Free | 40% | Estimate → | |
| 3917.10.90.00 | Other[kg] | 4.2% | Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) | 40% | Estimate → |
| Tubes, pipes and hoses, rigid: | |||||
| 3917.21.00.00 | Of polymers of ethylene[kg] | 3.1% | Free (A,AU,B,BH,C,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) | 25% | Estimate → |
| 3917.22.00.00 | Of polymers of propylene[kg] | 3.1% | Free (A,AU,B,BH,C,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) | 25% | Estimate → |
| 3917.23.00.00 | Of polymers of vinyl chloride[kg] | 3.1% | Free (A,AU,B,BH,C,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) | 25% | Estimate → |
| 3917.29.00 | Of other plastics | 3.1% | Free (A,AU,B,BH,C,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) | 25% | |
| 3917.29.00.50 | Less than 200 mm in length[thousands, kg] | Estimate → | |||
| 3917.29.00.90 | Other[kg] | Estimate → | |||
| Other tubes, pipes and hoses: | |||||
| 3917.31.00.00 | Flexible tubes, pipes and hoses, having a minimum burst pressure of 27.6 MPa[kg] | 3.1% | Free (A,AU,B,BH,C,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) | 25% | Estimate → |
| 3917.32.00 | Other, not reinforced or otherwise combined with other materials, without fittings | 3.1% | Free (A*,AU,B,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) | 25% | |
| 3917.32.00.10 | Of polyvinyl chloride[kg] | Estimate → | |||
| 3917.32.00.20 | Of polyethylene[kg] | Estimate → | |||
| 3917.32.00.50 | Other[kg] | Estimate → | |||
| 3917.33.00.00 | Other, not reinforced or otherwise combined with other materials, with fittings[kg] | 3.1% | Free (A,AU,B,BH,C,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) | 25% | Estimate → |
| 3917.39.00 | Other | 3.1% | Free (A*,AU,B,BH,C,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) | 25% | |
| 3917.39.00.10 | Reinforced with metal[kg] | Estimate → | |||
| Other: | |||||
| 3917.39.00.20 | Of polyvinyl chloride[kg] | Estimate → | |||
| 3917.39.00.50 | Other[kg] | Estimate → | |||
| 3917.40.00 | Fittings | 5.3% | Free (A,AU,B,BH,C,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) | 80% | |
| 3917.40.00.10 | For brake hoses for the vehicles of subheadings 8701.21, 8701.22, 8701.23, 8701.24 or 8701.29 or headings 8702, 8703, 8704, 8705 or 8711[kg] | Estimate → | |||
| Plumbing fittings, not pressure rated (Drain/Waste/Vent (DWV)): | |||||
| 3917.40.00.20 | Of polyvinyl chloride[kg] | Estimate → | |||
| 3917.40.00.30 | Of acrylonitrile-butadiene-styrene[kg] | Estimate → | |||
| 3917.40.00.50 | Other[kg] | Estimate → | |||
| Other plumbing fittings: | |||||
| 3917.40.00.60 | Of polyvinyl chloride[kg] | Estimate → | |||
| 3917.40.00.80 | Other[kg] | Estimate → | |||
| 3917.40.00.95 | Other[kg] | Estimate → |
27 lines shown. Statistical suffixes (the last two digits) inherit the rate of the 8-digit subheading above them.
Example: base duty and fees on $10000
For HTS 3917.10.10.00 at the general rate of 6.5%, shipped by ocean, before any Chapter 99 tariffs:
| Base duty (6.5%) | $650.00 |
| Merchandise Processing Fee (0.3464%, min $34.58) | $34.64 |
| Harbor Maintenance Fee (0.125%) | $12.50 |
| Duty and fees | $697.14 |
Origin-specific tariffs can multiply this. Run this example from China or from Mexico to see every line.
Special program codes in this heading
- A, A*, A+
- Generalized System of Preferences (GSP)
- AU
- U.S.–Australia FTA
- B
- Automotive Products Trade Act
- BH
- U.S.–Bahrain FTA
- C
- Agreement on Trade in Civil Aircraft
- CL
- U.S.–Chile FTA
- CO
- U.S.–Colombia Trade Promotion Agreement
- D
- African Growth and Opportunity Act (AGOA)
- E, E*
- Caribbean Basin Economic Recovery Act
- IL
- U.S.–Israel FTA
- JO
- U.S.–Jordan FTA
- KR
- U.S.–Korea FTA (KORUS)
- MA
- U.S.–Morocco FTA
- OM
- U.S.–Oman FTA
- P, P+
- CAFTA-DR
- PA
- U.S.–Panama Trade Promotion Agreement
- PE
- U.S.–Peru Trade Promotion Agreement
- S, S+
- USMCA (United States–Mexico–Canada Agreement)
- SG
- U.S.–Singapore FTA
A special rate applies only when the goods qualify under that program's rules of origin and the claim is made at entry.
Duty by country of origin
Frequently asked questions
What is the duty rate for HTS 3917?
Heading 3917 has 12 rate lines. The general (MFN) duty rates are 3.1% (8 lines), 6.5% (1 line), Free (1 line), 4.2% (1 line). Products of free trade agreement partners may enter at the special rate, and Column 2 rates apply to countries without normal trade relations. Chapter 99 tariffs can be added on top: calculate the full amount.
Do Section 301, 232 or 201 tariffs apply to HTS 3917?
It depends on the 8- or 10-digit subheading, the country of origin, the entry date and, for Section 232, the metal content. These additional duties are listed in Chapter 99 of the HTS. The free duty calculator checks each program for a given code, origin and date and shows which apply and why.
What fees are added to an import under HTS 3917?
Formal entries pay the Merchandise Processing Fee of 0.3464% of value (minimum $34.58, maximum $670.86 in FY2027). Ocean shipments also pay the Harbor Maintenance Fee of 0.125% of value. See the import duty calculator for how they combine.