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HSChapter 73
U.S. imports of cast pipe fittings of nonmalleable cast iron (HS 730711) totaled $2.8M in April 2026, traded with 23 countries.
Importers of Cast Pipe Fittings of Nonmalleable Cast Iron paid $386K in duties in April 2026 — an effective duty rate of 22% on $1.7M in dutiable value, based on actual customs collections rather than the published tariff schedule.
Last updated: April 2026 dataNonmalleable (gray) cast iron fittings are brittle relative to ductile iron and are therefore confined to low-pressure, non-impact applications such as threaded drainage fittings and cast-iron soil pipe systems. The US schedule separates fittings for threaded pipe (7307110030), fittings for cast-iron soil pipe (7307110045), and all other nonmalleable cast iron fittings (7307110060). India leads US supply under this heading, followed by China. Both leading sources are subject to Section 232 tariffs, and antidumping or countervailing duty orders on cast iron pipe fittings from certain origins have historically been in force — importers should verify current AD/CVD scope before entry.
AI-written summary of the official U.S. Census Bureau trade figures on this page — verify before relying on it.
Nonmalleable (gray) cast iron has a flake graphite microstructure, is brittle, and cannot be bent without fracturing. Ductile (nodular) iron has a spheroidal graphite structure, is impact-resistant, and is used in pressure pipe systems. Material certification from the manufacturer identifying the iron grade (e.g., ASTM A126 for gray iron vs. ASTM A536 for ductile iron) is the standard documentation for classification purposes.
AD/CVD orders on cast iron pipe fittings from certain countries have been in place for many years and have been subject to periodic sunset reviews. Importers should check the current scope of any applicable orders with the Department of Commerce and confirm with a licensed customs broker before filing entry, as scope and rates can change following administrative reviews.
| Country | Imports | Exports | Balance |
|---|---|---|---|
| CANADA | $405K | $1.4M | +$990K |
| MEXICO | $633K | $669K | +$36K |
| INDIA | $669K | $26K | -$643K |
| CHINA | $483K | $106K | -$376K |
| UNITED KINGDOM | -- | $212K | +$212K |
Monthly import values over time
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HS10 import codes under this HS6 parent. Source: U.S. Harmonized Tariff Schedule.
| Code | Description | Import Value | Effective Tariff % | Duty Collected |
|---|---|---|---|---|
| 7307110060 | CAST FITTINGS OF NONMALLEABLE CAST IRON NESOI | $1.2M | 21.71% | $172K |
| 7307110030 | FITTINGS, NONMALBLE CAST IRON FOR THREADED PIPE | $1.2M | 24.15% | $172K |
| 7307110045 | FITTINGS NONMALBLE CAST-IRN FOR CST-IRON SOIL PIPE | $406K | 17.14% | $41K |
CAST FITTINGS OF NONMALLEABLE CAST IRON NESOI
FITTINGS, NONMALBLE CAST IRON FOR THREADED PIPE
FITTINGS NONMALBLE CAST-IRN FOR CST-IRON SOIL PIPE
HS10 export codes under this HS6 parent. Source: U.S. Schedule B export classification.
| Code | Description | Export Value |
|---|---|---|
| 7307110060 | CAST FITTINGS OF NONMALLEABLE CAST IRON NESOI | $2.3M |
| 7307110030 | FITTINGS, NONMALBLE CAST IRON FOR THREADED PIPE | $624K |
| 7307110045 | FITTINGS NONMALBLE CAST-IRN FOR CST-IRON SOIL PIPE | $54K |
CAST FITTINGS OF NONMALLEABLE CAST IRON NESOI
288.0K kg
FITTINGS, NONMALBLE CAST IRON FOR THREADED PIPE
18.5K kg
FITTINGS NONMALBLE CAST-IRN FOR CST-IRON SOIL PIPE
4.5K kg
ARTICLES OF IRON OR STEEL NESOI
HS 732690
STRUCTURES AND PARTS NESOI OF IRON OR STEEL
HS 730890
THREADED SCREWS AND BOLTS NESOI OF IRON OR STEEL
HS 731815
COOKING APPLIANCES ETC FOR GAS FUEL, IRON OR STEEL
HS 732111
NUTS OF IRON OR STEEL
HS 731816
TABLE, KITCHEN ETC ARTICLES & PTS, STAINLESS STEEL
HS 732393
| State | Imports | Exports | Balance |
|---|---|---|---|
| California | $249K | $497K | +$247K |
| Pennsylvania | $169K | $533K | +$364K |
| Texas | $302K | $273K | -$29K |
| Port | Imports | Exports | Balance |
|---|---|---|---|
| YSLETA, TX | $460K | $333K | -$127K |
| NEWARK, NJ | $504K | -- | -$504K |
| LOW VALUE | -- | $490K | +$490K |