U.S. imports of Cast Iron or Steel Pipe Fittings (Other Than Nonmalleable Cast Iron) (HS 730719) totaled $49.7M in August 2026, imported from 40 countries.
Importers of Cast Iron or Steel Pipe Fittings (Other Than Nonmalleable Cast Iron) paid $18.9M in duties in August 2026, an average duty rate of 38.05% — duty actually collected as a share of the imports that cleared customs, not the published tariff schedule.
Last updated: August 2026 dataDuctile iron and other cast steel fittings — including grooved-end, threaded, flanged, and push-on joint configurations — serve water main, fire protection, and industrial piping systems where impact resistance and pressure ratings matter. The US tariff schedule is unusually granular here, with dedicated lines for grooved-end ductile fittings (7307193040), threaded ductile fittings (7307193060), mechanical push-on/flanged joint fittings (7307193070), grooved-end non-ductile cast fittings (7307199040), and threaded cast fittings (7307199060). China leads supply, followed by India and Thailand. Both China-origin and India-origin cast fittings may be subject to Section 232 tariffs and, depending on product type, antidumping or countervailing duty orders.
AI-written summary of the official U.S. Census Bureau trade figures on this page — verify before relying on it.
3.0K import shipments a month
CBP expects commercial invoices and manufacturer specifications that identify the joint type (grooved-end per AWWA C606 or ASTM standards, versus NPT or other threaded standards) and confirm the iron grade as ductile (nodular). Misidentifying the joint type can result in misclassification between 7307193040 (grooved-end ductile) and 7307193060 (threaded ductile), which carry different statistical reporting and potentially different AD/CVD exposure.
The granularity reflects both trade-remedy history and domestic industry petitions: grooved-end, threaded, and flanged fittings serve distinct end-use markets and have been subject to separate antidumping investigations at various times. Separate statistical lines allow CBP and Commerce to monitor import volumes by product type for AD/CVD enforcement and injury analysis purposes.
Subheading 1 of 10 in heading 7307
Subheading 730719 · $49.7M of $280.0M
ImportsExports
Imports
$49.7MYoY · free account
Exports
$23.5MYoY · free account
12-mo low · imports
Low · free accountOver the twelve months to August 2026, the U.S. imported $552.0M of Cast Iron or Steel Pipe Fittings (Other Than Nonmalleable Cast Iron) and exported $234.9M.
Through August 2026. Source: U.S. Census Bureau.
HS10 import codes under this HS6 parent, each with its own page. Source: U.S. Harmonized Tariff Schedule.
| Code | Description | Imports for consumption | Average duty rate | Dutiable Share | Duty Collected |
|---|---|---|---|---|---|
| 7307193040 | Ductile Fittings, Grooved-End of Iron/Steel, Cast | $20.5M | 45.45% | 93.50% | $9.3M |
| 7307193070 | Ductile Fittings, Mech. Psh-on/Flngd Jnts Attached | $11.5M | 22.26% | 82.48% | $2.6M |
| 7307199060 | Tube/Pipe Fittings, Threaded, Iron or Steel, Cast | $7.9M | 36.49% | 98.26% | $2.9M |
| 7307193085 | Ductile Fittings, NESOI, of Iron or Steel, Cast | $3.0M | 44.11% | 99.78% | $1.3M |
| 7307193060 | Ductile Fittings, Threaded, of Iron or Steel, Cast | $2.6M | 28.81% | 80.80% | $745K |
| 7307199080 | Oth Tube/Pipe Fittings, Iron or Steel, Cast, NESOI | $2.5M | 51.67% | 98.01% | $1.3M |
| 7307199030 | Unions, Pipe, of Iron or Steel, Cast | $1.3M | 38.40% | 97.15% | $501K |
| 7307199040 | Tube and Pipe Fittings, Grooved-End, Iron or Steel | $512K | 64.74% | 100.00% | $332K |
HS10 export codes under this HS6 parent, each with its own page. Source: U.S. Schedule B export classification.
| Code | Description | Export Value |
|---|---|---|
| 7307199090 | Other Cast Fittings, NESOI, of Iron or Steel | $15.8M |
| 7307193000 | Ductile Fittings of Iron or Steel, Cast | $7.0M |
| 7307199030 | Unions, Pipe, of Iron or Steel, Cast | $728K |
Import lines come from the U.S. Harmonized Tariff Schedule and export lines from Schedule B. The two are numbered by different agencies, so the same 10-digit code can appear in both tables describing a different product.
Trade Directory
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Imports · August 2026
origin
China and India together supply 57% of it. China pays 57.2% duty; Mexico 2.9%.
customs district
destination
entry
rate provision · imports
8.2% enters free of duty; duty collected equals 38.05% of imports for consumption.