HS code · 6-digit subheading
HS Code 3917.40 – Plastics; tube, pipe and hose fittings (e.g. joints, elbows, flanges)
HS code 3917.40 is the 6-digit subheading for plastics, tube, pipe and hose fittings (e.g. joints, elbows, flanges). It is used for PVC elbows, HDPE couplings, PEX crimp rings, PP compression fittings and ABS T-connectors.
What HS 3917.40 covers
This HS code specifically covers plastic tube, pipe, and hose fittings, such as joints, elbows, and flanges. These components are essential for connecting, terminating, or changing the direction of fluid and gas lines in various systems. They are widely traded for use in plumbing, irrigation, industrial piping, automotive systems, and pneumatic applications. Importers include wholesale distributors, construction companies, and original equipment manufacturers (OEMs) who integrate these fittings into their products. The trade volume is significant, reflecting the global demand for reliable and adaptable connection solutions in infrastructure and manufacturing.
- Covers
- PVC elbows
- HDPE couplings
- PEX crimp rings
- PP compression fittings
- ABS T-connectors
- Nylon quick-connect fittings
- Plastic flanges
- Solvent weld reducers
- Examples
- Schedule 40 PVC coupling
- SharkBite PEX fittings
- John Guest push-fit connectors
- plastic garden hose quick connectors
- CPVC solvent weld fittings
Codes often confused with 3917.40
Common mistake. Distinct from 391733 (tubes with fittings) as this code is only for the fittings themselves. Could also be confused with metal fittings (e.g., Chapter 73 or 74).
Top exporters and importers of HS code 391740, 2025
In 2025, the largest exporter of HS code 391740 in UN Comtrade data was Germany, with 18% of world exports; the largest importer in UN Comtrade data was Germany, with 9.8% of world imports. Countries that did not report 2025 data are estimated from partner records, which can understate them.
Top exporters 2025 · share of world exports
- 1 Germany $1.5B 18% of world exports
- 2 United States $1.1B 13% of world exports
- 3 China $1.1B 13% of world exports
World total: $8.5B Reported figures on UN Comtrade ↗
Top importers 2025 · share of world imports
- 1 Germany $869M 9.8% of world imports
- 2 United States $689M 7.8% of world imports
- 3 Mexico $596M 6.7% of world imports
World total: $8.9B Reported figures on UN Comtrade ↗
How these figures are built
109 countries reported 2025 trade to UN Comtrade in HS 2022, and their own totals are used. Countries that did not report are estimated from what other countries recorded trading with them. Those estimates miss trade with other non-reporting countries, so they can be low, and a non-reporting country can rank higher than shown or be missing from the list. World totals add both and leave out trade between two non-reporting countries. Figures are in current US dollars; reported imports are mostly valued CIF and exports FOB, and exports include re-exports. The UN Comtrade links show the underlying records; they can also list a few reporters left out here (regional groups and older HS editions).
Source: UN Comtrade (United Nations Statistics Division), 2025 annual data.
Brazil NCM codes for 3917.40 2
Brazil splits HS 3917.40 into 2 NCM codes, Mercosur's 8-digit tariff lines.
- 3917.40.10 Plastic fittings for haemodialysis blood linesDo tipo utilizado em linhas de sangue para hemodiálise
- 3917.40.90 Other plastic tube, pipe and hose fittingsOutros
All Brazil NCM codes in heading 39.17 →
Source: Siscomex NCM table, updated Oct 2026. The Portuguese text is official; the English is our translation.
Questions about HS 3917.40
What is HS code 391740?
HS code 391740 is a 6-digit subheading in the Harmonized System that covers: Plastics; tube, pipe and hose fittings (e.g. joints, elbows, flanges). This HS code specifically covers plastic tube, pipe, and hose fittings, such as joints, elbows, and flanges. These components are essential for connecting, terminating, or changing the direction of fluid and gas lines in various systems. They are widely traded for use in plumbing, irrigation, industrial piping, automotive systems, and pneumatic applications. Importers include wholesale distributors, construction companies, and original equipment manufacturers (OEMs) who integrate these fittings into their products. The trade volume is significant, reflecting the global demand for reliable and adaptable connection solutions in infrastructure and manufacturing.
What products fall under HS code 391740?
PVC elbows, HDPE couplings, PEX crimp rings, PP compression fittings, ABS T-connectors, nylon quick-connect fittings, plastic flanges, solvent weld reducers
What are common misclassifications for HS code 391740?
Distinct from 391733 (tubes with fittings) as this code is only for the fittings themselves. Could also be confused with metal fittings (e.g., Chapter 73 or 74).
Which countries are the top exporters of goods under HS code 391740?
In 2025, the top exporters of HS code 391740 in UN Comtrade data were Germany ($1.5B, 18% of world exports), the United States ($1.1B) and China ($1.1B). World exports came to about $8.5B, 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.
Which countries are the top importers of goods under HS code 391740?
In 2025, the top importers of HS code 391740 in UN Comtrade data were Germany ($869M, 9.8% of world imports), the United States ($689M) and Mexico ($596M). World imports came to about $8.9B, 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.
How is HS code 391740 structured?
HS code 391740 is a 6-digit subheading under the Harmonized System. The first 2 digits (39) identify the chapter, digits 3-4 (17) identify the heading, and digits 5-6 (40) specify the subheading. This code is standardized globally by the World Customs Organization.
What is the Brazil NCM code for HS code 391740?
Brazil splits HS code 391740 into 2 NCM codes: 3917.40.10 (Plastic fittings for haemodialysis blood lines), 3917.40.90 (Other plastic tube, pipe and hose fittings). The first 6 digits of each match the HS code.