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HSChapter 38
U.S. imports of pickling preparations for metal surfaces & soldering/brazing/welding powders and pastes (HS 381010) totaled $6.8M in April 2026, traded with 25 countries.
Importers of Pickling Preparations for Metal Surfaces & Soldering/Brazing/Welding Powders and Pastes paid $512K in duties in April 2026 — an effective duty rate of 18% on $2.8M in dutiable value, based on actual customs collections rather than the published tariff schedule. Pickling Preparations for Metal Surfaces & Soldering/Brazing/Welding Powders and Pastes imports of $6.8M in April 2026 ran 19% above the year-to-date monthly average of $5.7M.
Last updated: April 2026 dataClassified under a single 10-digit line (3810100000), these chemical preparations serve two distinct functions: removing oxide scale and corrosion from metal surfaces before finishing, and acting as metal-bearing powders or pastes that facilitate soldering, brazing, or welding joints. Mexico leads US import supply, followed by Japan and Canada, reflecting deep integration with North American manufacturing and the strong Japanese presence in precision electronics assembly materials. Importers should confirm whether a specific formulation is classified here or under a flux-based heading, as the distinction turns on whether the active ingredient is a metal constituent versus an auxiliary chemical agent.
AI-written summary of the official U.S. Census Bureau trade figures on this page — verify before relying on it.
Pickling preparations under 381010 are designed to chemically clean or descale metal surfaces, or consist of metal-containing powders and pastes used in joining processes. Fluxes under 381090 are auxiliary chemical agents that prevent oxidation during soldering or welding but do not themselves consist primarily of metal material. The distinction often turns on formulation composition; consult a licensed customs broker when a product could plausibly fall under either heading.
Imports from China may be subject to Section 301 tariffs depending on the specific product formulation and applicable tariff line. Importers should verify current Section 301 exposure for 3810100000 with a licensed customs broker before shipment.
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 |
|---|---|---|---|---|
| 3810100000 | PICKLING PREP FOR METAL SURFACES, SOLDERING, ETC | $6.8M | 18.09% | $512K |
PICKLING PREP FOR METAL SURFACES, SOLDERING, ETC
HS10 export codes under this HS6 parent. Source: U.S. Schedule B export classification.
| Code | Description | Export Value |
|---|---|---|
| 3810100000 | PICKLING PREP FOR METAL SURFACES, SOLDERING, ETC | $21.2M |
PICKLING PREP FOR METAL SURFACES, SOLDERING, ETC
1.0M kg
PRODUCTS AND RESIDUALS OF CHEMICAL INDUSTRY, NESOI
HS 382499
DIAGNOSTIC OR LABORATORY REAGENTS INCL KITS, NESOI
HS 382219
CHEM ELEM DOPED, USED IN ELECTRON, DISCS WAFERS ET
HS 381800
SUPPORTED CATALYSTS W PREC METAL/PREC MTL COMPND
HS 381512
SUPPORTED CATALYSTS, NESOI
HS 381519
ADDITIVE FOR LUB OIL CONT PETRO/BITUMINOUS MINOIL
HS 381121
| Port | Imports | Exports | Balance |
|---|---|---|---|
| LAREDO, TX | $1.8M | $3.2M | +$1.5M |
| NEW ORLEANS, LA | $965K | $3.1M | +$2.1M |
| CHICAGO, IL | $321K | $2.0M | +$1.7M |