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HSChapter 85
U.S. imports of fully or partly automatic electric resistance welding machines (HS 851521) totaled $14.5M in April 2026, traded with 24 countries.
Importers of Fully or Partly Automatic Electric Resistance Welding Machines paid $1.3M in duties in April 2026 — an effective duty rate of 10% on $12.8M in dutiable value, based on actual customs collections rather than the published tariff schedule. Fully or Partly Automatic Electric Resistance Welding Machines imports of $14.5M in April 2026 ran 30% below the year-to-date monthly average of $20.6M.
Last updated: April 2026 dataResistance welding machines that are fully or partly automatic — including spot welders, seam welders, and projection welders integrated into robotic or mechanized production lines — serve as backbone equipment in automotive body assembly, appliance manufacturing, and metal fabrication. Japan leads US imports under this heading, consistent with its dominance in automotive robotics and welding automation, with Germany and Canada also among the top suppliers. All imports under this heading fall under a single 10-digit line (8515210000). The automation criterion is the critical classification boundary: machines requiring manual repositioning of the workpiece for each weld cycle are classified separately under 851529.
AI-written summary of the official U.S. Census Bureau trade figures on this page — verify before relying on it.
A machine is considered at least partly automatic if it incorporates mechanical or electronic controls that automatically sequence, position, or advance the workpiece or electrodes without manual intervention for each weld cycle. A basic bench-top spot welder where the operator manually positions each part and actuates the weld is generally non-automatic and falls under 851529. Integrated robotic welding cells, automatic seam welders with motorized feed, and programmable multi-spot welding guns are typical 851521 candidates.
When a resistance welding machine and a robotic manipulator are imported together as a functional welding cell, classification depends on which component imparts the essential character to the system. If the welding function is primary and the robot is ancillary, the system may be classified under 851521. If the robot is a general-purpose industrial robot that happens to carry a welding gun, the robot heading may govern. GRI 3(b) essential-character analysis and consultation with a licensed customs broker are recommended for integrated robotic welding systems.
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Monthly import values over time
HS10 import codes under this HS6 parent. Source: U.S. Harmonized Tariff Schedule.
| Code | Description | Import Value | Effective Tariff % | Duty Collected |
|---|---|---|---|---|
| 8515210000 | ELECTRIC WELDERS, RESISTANCE, FULL OR PART AUTOMAT | $14.5M | 10.16% | $1.3M |
ELECTRIC WELDERS, RESISTANCE, FULL OR PART AUTOMAT
HS10 export codes under this HS6 parent. Source: U.S. Schedule B export classification.
| Code | Description | Export Value |
|---|---|---|
| 8515210000 | ELECTRIC WELDERS, RESISTANCE, FULL OR PART AUTOMAT | $5.5M |
ELECTRIC WELDERS, RESISTANCE, FULL OR PART AUTOMAT
219 no
MACH FOR RECP/CONVR/TRANS/REGN OF VOICE/IMAGE/DATA
HS 851762
SOLID-STATE NON-VOL SEMICONDUCTOR STORAGE DEVICES
HS 852351
SMARTPHONES
HS 851713
PROCESSORS AND CONTROLLERS, ELECTRONIC INTEG CIRCT
HS 854231
CONTROLS ETC W ELECT APPR F ELECT CONT NOV 1000 V
HS 853710
STATIC CONVERTERS; ADP POWER SUPPLIES
HS 850440
| Port | Imports | Exports | Balance |
|---|---|---|---|
| HOUSTON, TX | $3.4M | $160K | -$3.3M |
| DETROIT, MI | $1.8M | $1.1M | -$680K |
| LOS ANGELES, CA | $2.5M | -- | -$2.5M |