By the MSI Leadership Team
“Pipe fittings are no longer on the edge of tariff enforcement. They’re in it.”
As of August 2025, the U.S. Commerce Department officially expanded Section 232 steel and aluminum tariffs to include over 400 new HTS codes. That includes items widely used in industrial pipe systems. Most notably, pipe fittings are now specifically listed under HTS heading 7307—making them subject to a 50 percent import duty on any steel or aluminum content. (Federal Register, HTS 7307)
What’s Now on the Tariff List
The expansion includes:
- Wind turbines and components
- Mobile cranes, bulldozers, and railcars
- Industrial compressors, pumps, and furniture
- Automotive and EV components with embedded steel or aluminum
These additions reflect the federal government’s broader goal to close tariff loopholes and expand enforcement to downstream products and assemblies. (Reuters)
Why This Matters for Pipe Fitting Distributors
Pipe fittings sit at the core of mechanical and plumbing systems. The inclusion of HTS 7307 means that any carbon or stainless steel fitting imported from impacted regions now comes with a 50 percent duty unless otherwise exempt. This affects your cost structure, quoting process, and inventory strategy.
MSI’s Response
- Cross-referenced new HTS codes against our SKU catalog to identify affected products
- Updated price files to reflect tariff-driven cost changes where applicable
- Shifted sourcing away from higher-risk countries like China to reduce tariff exposure and stabilize availability
What You Should Do Now
- Audit your inventory and upcoming POs for any steel or aluminum pipe fittings, flanges, or assemblies
- Contact your MSI representative to determine whether your products are affected and receive updated pricing
- Adjust project quotes and forecasts accordingly—especially for infrastructure and commercial bids that rely heavily on metal fittings
Final Thought
This isn't just a change in trade policy. It's a direct hit to our space. Pipe fittings are now officially on the tariff list, and that has ripple effects throughout the mechanical and industrial supply chain. MSI remains committed to helping you plan, adapt, and stay competitive through all of it.