Section XV — Base metals and articles of base metal
Subheading
810999
Other
Common commodities
Zirconium-hafnium alloy industrial valvesHeat exchanger tubes with Zr-Hf compositionWrought Zr-Hf pipes for chemical plantsZirconium-hafnium pumps componentsCorrosion resistant Zr-Hf fittingsZirconium-hafnium heat exchanger componentsIndustrial Zr-Hf sheeting for chemical industriesZirconium-hafnium alloy pressure vesselsZr-Hf condenser tubes for chemical applicationsHigh corrosion resistance Zirconium-hafnium rods