Alloy Steel Heat Exchanger Tubing
U-bent or straight tubes from Alloy 800H/825 for shell-and-tube heat exchangers in chemical processing. Classified 7306.90.5000 as other alloy steel tubes excluding boiler/precision types.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If austenitic stainless like 316L
Common heat exchanger materials have stainless-specific codes.
If part of heat exchanger unit
Assembled exchanger parts use Chapter 84 machinery heading.
Not sure which classification is right?
Our AI classifier can analyze your specific product and recommend the correct HTS code with confidence.
Import Tips & Compliance
• ASTM B407/B424 material certs with U-bend radius documentation required
• Specify finned or bare tube status for valuation accuracy
• CVD risk on Ni-bearing alloys; full chemical analysis needed
Related Products under HTS 7306.90.50.00
Welded Alloy Steel Square Hollow Section
ERW welded square hollow structural section (HSS) from alloy steel grades like A500 or A513, used in construction frameworks and machine bases. Fits 7306.90.5000 as other hollow profiles of alloy steel, distinct from circular pipes.
Chrome-Moly P91 Alloy Boiler Tube
High-temperature P91 (9Cr-1Mo) alloy steel tube for supercritical boiler superheaters and reheaters. Classifies in 7306.90.5000 as other alloy steel tubes, excluding line pipe or casing applications.
17-4PH Stainless Alloy Steel Hollow Bar
Precipitation-hardened 17-4PH stainless alloy steel hollow bar, machined from tube for valve bodies and pump shafts. 7306.90.5000 covers this as other alloy steel hollow profiles with wire dimensions under 16mm max.
Alloy Steel Scaffolding Pipe Adapter Tube
Short adapter tubes from high-strength alloy steel connecting standard scaffolding pipes. Classified 7306.90.5000 as other welded alloy steel tubes for construction equipment.
Nitrided Alloy Steel Mandrel Bar Tube
Surface-nitrided 4340 alloy steel hollow mandrel bars used in tube drawing operations. 7306.90.5000 for specialized alloy steel hollow profiles in metalworking.
High-Pressure Alloy Steel Accumulator Shell
Cylindrical shells from 4340 or 300M alloy steel for hydraulic accumulators storing pressurized fluid. 7306.90.5000 applies to these welded or seamless pressure vessels under tube dimensions.