Comments close tomorrow on a proposal to put Section 232 duties on imported mobile cranes, electrical conductor cable and welding-machine parts.
The Bureau of Industry and Security published the notice on Aug. 6, proposing to add 14 derivative articles to the existing steel, aluminum and copper tariffs. The comment deadline is Aug. 27. Docket 260803-0182, regulations.gov ID BIS-2026-0331, 91 FR 50756.
These are proposals. Nothing is in effect yet. But BIS states in the notice that Administrative Procedure Act notice-and-comment requirements don’t apply here, under the military-function exemption at 5 U.S.C. 553(a)(1), which means the comment period is discretionary and a final action can move quickly once it closes.
The line items that matter on a jobsite
Read past the aluminum powder and the free-standing floor safes and there’s a list that reads like an equipment schedule:
- Other self-propelled cranes and mobile lifting frames (HTSUS 8426.41.0090)
- Mobile lifting frames on tires and straddle carriers (8426.12.0000)
- Parts of welding machines and apparatus (8515.90.2000)
- Electric conductor cables (8544.49.2000, 8544.49.3040, 8544.49.3080, 8544.60.4000)
- Parts of heat exchange units (8419.90.3000)
- Parts of linear-acting hydraulic power engines and motors (8412.90.9005)
- Fire extinguishers (8424.10.0000)
- Tanker and other trailers and semi-trailers (8716.31.00, 8716.40.00)
The default proposed rate is 25% under clause (3) of Proclamation 11021. Cranes, mobile lifting frames and straddle carriers get treated differently: Commerce classes them as mobile industrial equipment and would apply the rates in clauses (2) and (3) of Proclamation 11032, issued June 1.
Filled steel containers of propane, oxygen and propene would take 50% under clause (2) of Proclamation 11021, applied only to the value of the metal container rather than the contents. Agricultural self-loading trailers would take 15%.
What BIS is asking for
The notice specifically requests data on metal intensity by weight, import volumes, and whether domestic production can meet domestic demand. That last one is the live question for cranes. A contractor who can document a lead time or a capacity gap has something BIS says it wants, and roughly 24 hours to file it.
The notice had logged more than 10,600 page views by early Aug. 26, which is unusual traffic for a BIS inclusion notice.
Why it matters
Derivative-article inclusion is how a metals tariff quietly becomes an equipment tariff. The duty attaches to the metal content of a finished good, so a rough-terrain crane or a reel of conductor cable gets repriced without anyone changing the headline rate on steel.
Electrical work is where this lands hardest. Conductor cable is already a constrained commodity, and the same substation and switchgear scarcity Kiewit’s nuclear chief described this week runs through the same supply base. Heavy equipment buyers should also note that a 25% duty on crane imports changes rental economics before it changes purchase economics, because rental fleets replace on a cycle and owners will hold units longer.
Steel-sector capital projects are watching the other direction too. Tata Steel’s £1.25 billion electric arc furnace at Port Talbot is part of a global rebuild of scrap-fed capacity that these duties are ultimately meant to protect.
One dating caution: a widely circulated BIS release headlined “Department of Commerce Adds 407 Product Categories to Steel and Aluminum Tariffs” is from August 2025, not this month. It is not this action.