Other
Tubes, pipes and hollow profiles, seamless, of iron (other than cast iron) or steel. > Other, of circular cross-section, of stainless steel: > Other
Duty Rate (from China)
Subheadings
Products classified under Tariff item 7304.49
17-4 PH Stainless Steel Hollow Bar for Aerospace
Precipitation-hardening 17-4 PH stainless steel seamless hollow bar used for aircraft structural components. This hollow bar has a circular cross-section and is designed for high-stress aerospace applications requiring high strength and corrosion resistance. It is classified under tariff item 7304.49.00 as a seamless hollow profile of stainless steel.
7304.49.002205 Duplex Feedwater Heater Tube
Seamless duplex 2205 stainless steel replacement tubes for high-pressure feedwater heaters, offering improved fatigue resistance over 316L. These tubes are of circular cross-section and are classified under tariff item 7304.49.00 as other seamless stainless steel tubes.
7304.49.002209 Super Duplex Seamless Pipe 6-inch
Seamless 2209 super duplex stainless steel pipe, 6-inch NPS, with circular cross-section, designed for desalination plants. Its high pitting resistance (PREN >40) makes it suitable for harsh chloride environments. This product is classified as 'other' seamless stainless steel pipe, not cold-drawn or further worked.
7304.49.0025-6MO Stainless Condenser Service Tube
Seamless 25-6MO (UNS N08925) stainless steel tubes for condenser service in combined cycle plants, optimized for cooling water with chlorides. These tubes are of circular cross-section and are classified under tariff item 7304.49.00 as other seamless stainless steel tubes.
7304.49.00304L Seamless Stainless Pressure Tubing 1-inch
Seamless 304L low-carbon stainless steel pressure tubing, 1-inch OD, with circular cross-section, used in hydraulic pressure systems. The low carbon content improves weldability and corrosion resistance. It falls under 'other' seamless stainless steel tubes, not further worked.
7304.49.00304L Stainless Steel Hollow Bar for Pump Shafts
Low-carbon 304L stainless steel seamless hollow bar with a circular cross-section, designed for pump shaft sleeves. The low carbon content improves weldability, making it suitable for fluid handling applications. It is classified under tariff item 7304.49.00 as a seamless hollow profile of stainless steel.
7304.49.00304 Seamless Stainless Ornamental Pipe 3-inch
Mirror-polished seamless 304 stainless steel pipe, 3-inch schedule 10, with circular cross-section, used for architectural handrails and displays. The decorative finish is applied after the seamless pipe is formed. It is classified as 'other' seamless stainless steel pipe, not further worked.
7304.49.00304 Stainless Seamless Exhaust Tubing 2.5-inch
Seamless 304 stainless steel tubing, 2.5-inch OD, with circular cross-section, used for custom automotive exhaust systems. It offers corrosion resistance and durability for high-temperature applications. This product is classified as 'other' seamless stainless steel pipe for general fabrication.
7304.49.00304 Stainless Steel Seamless Tube 1.5-inch OD
Seamless 304 stainless steel tube with 1.5-inch outer diameter and thin wall, used for structural or fluid transfer in food processing. Its circular cross-section and seamless construction ensure hygiene and strength. It is classified as 'other' seamless stainless steel tube of circular cross-section.
7304.49.00310 Stainless Seamless Furnace Tubing 4-inch
Seamless 310 high-temperature stainless steel tubing, 4-inch, with circular cross-section, used for furnace muffles and thermowells. It offers oxidation resistance up to 2000°F. This product is classified as 'other' seamless stainless steel tubing.
7304.49.00310 Stainless Steel High-Temp Hollow Bar
Heat-resistant 310 stainless steel seamless hollow bar for furnace components, with a circular profile. This grade offers excellent oxidation resistance up to 1100°C, making it suitable for high-temperature applications. It is classified under tariff item 7304.49.00 as a seamless hollow profile of stainless steel.
7304.49.00316 Stainless Steel Hollow Bar for Hydraulic Cylinders
Seamless 316 stainless steel hollow bar with a circular cross-section, used in manufacturing hydraulic cylinder bodies. This grade offers excellent corrosion resistance and strength, making it suitable for hydraulic applications. It is classified under tariff item 7304.49.00 as a seamless hollow profile of stainless steel.
7304.49.00316 Stainless Steel Seamless Pipe 2-inch Schedule 40
Seamless 316 stainless steel pipe, 2-inch nominal diameter, Schedule 40 wall thickness, with circular cross-section, designed for high-corrosion industrial applications. It is classified as 'other' seamless stainless steel pipe, not cold-drawn or further worked.
7304.49.00316Ti Stabilized Seamless Tubing 1/2-inch
Seamless 316Ti titanium-stabilized stainless steel tubing, 1/2-inch, with circular cross-section, used for welding in heat-affected refinery zones. The titanium addition prevents sensitization and improves weldability. It is classified as 'other' seamless stainless steel tubing.
7304.49.00316Ti Stabilized Superheater Pendant Tube
Seamless 316Ti stainless steel pendant tubes for superheater plenums, with titanium stabilization to prevent carbide sensitization. These tubes are of circular cross-section and are classified under tariff item 7304.49.00 as other seamless stainless steel tubes.
7304.49.00321 Stainless Seamless Aerospace Tubing 1-inch
Seamless 321 stainless steel tubing, 1-inch OD, AMS 5645 spec, used for aircraft hydraulic lines. Its circular cross-section and seamless construction provide high strength and corrosion resistance. It is classified as 'other' seamless stainless steel tubing, not specialized.
7304.49.00321 Stainless Steel Stabilized Hollow Bar
Titanium-stabilized 321 stainless steel seamless hollow bar for welded structures in chemical plants. The titanium stabilization prevents carbide precipitation during high-temperature exposure, improving corrosion resistance. It is classified under tariff item 7304.49.00 as a seamless hollow profile of stainless steel.
7304.49.00904L Stainless Refinery Heater Tube
Seamless 904L (N08904) high nickel stainless steel tubes for convection sections of refinery process heaters, with copper-bearing alloy resisting polythionic acid stress corrosion. These tubes are of circular cross-section and are classified under tariff item 7304.49.00 as other seamless stainless steel tubes.
7304.49.00904L Super Austenitic Hollow Bar
Corrosion-resistant 904L super austenitic stainless steel seamless hollow bar for seawater equipment. The high nickel and molybdenum content provides excellent pitting and crevice corrosion resistance. It is classified under tariff item 7304.49.00 as a seamless hollow profile of stainless steel.
7304.49.00AISI 316L Seamless Stainless Steel Boiler Tube
Seamless AISI 316L stainless steel boiler tube with a circular cross-section, designed for high-pressure steam boilers in industrial power plants, meeting ASME SA-213 specifications for elevated temperature service. Classified under tariff item 7304.49.00 as other seamless stainless steel tubes.
7304.49.00AL6XN Marine Condenser Tube
AL-6XN seamless tubes for seawater-cooled marine propulsion condensers, made from a trademarked alloy (UNS N08367). These tubes are of circular cross-section and are classified under tariff item 7304.49.00 as other seamless stainless steel tubes.
7304.49.00AL-6XN Seamless Tube
Seamless tubes made from AL-6XN super-austenitic stainless steel, a high-nickel alloy (20-23% nickel minimum) known for exceptional corrosion resistance. These circular cross-section tubes are used in pharmaceutical processing equipment where purity and resistance to aggressive chemicals are critical. They are classified under tariff item 7304.49.00 as seamless, circular cross-section tubes of stainless steel.
7304.49.00AL-6XN Stainless Heat Exchanger U-Tube
Pre-formed U-bend seamless AL-6XN stainless steel tubes for floating head heat exchangers in desalination plants, made from UNS N08367 alloy for seawater corrosion resistance. Classified under tariff item 7304.49.00 as other seamless stainless steel tubes.
7304.49.00Alloy 625 Seamless Pipe
Seamless pipes manufactured from Inconel Alloy 625, a high-nickel alloy steel containing at least 58% nickel. These pipes are designed for aerospace and marine exhaust systems where oxidation resistance at elevated temperatures is essential. They are classified under tariff item 7304.49.00 as seamless, circular cross-section pipes of stainless steel.
7304.49.00Alloy 825 Heat Exchanger Process Tube
Seamless Incoloy Alloy 825 (N08825) tube for sour gas heat exchangers in upstream oil and gas, made of Ni-Fe-Cr-Mo-Cu for H2S service. These tubes are of circular cross-section and are classified under tariff item 7304.49.00 as other seamless stainless steel tubes.
7304.49.00Carpenter 20Cb-3 Seamless Pipe
Seamless pipes made from Carpenter 20Cb-3, a high-nickel stainless alloy steel with 32-38% nickel content. These pipes offer excellent corrosion resistance, particularly in sulfuric acid processing environments. They are classified under tariff item 7304.49.00 as seamless, circular cross-section pipes of stainless steel.
7304.49.00Duplex 2205 Seamless Stainless Tube 2-inch Sch 10S
Seamless duplex 2205 stainless steel tube, 2-inch schedule 10S, with circular cross-section, used for offshore platforms. It offers superior corrosion resistance and high strength. This product is classified as 'other' seamless stainless steel hollow profile.
7304.49.00Duplex 2205 Stainless Hollow Bar
High-strength duplex 2205 stainless steel seamless hollow bar with a circular cross-section, used for offshore equipment fabrication. This grade offers twice the yield strength of standard austenitic stainless steels with excellent corrosion resistance. It is classified under tariff item 7304.49.00 as a seamless hollow profile of stainless steel.
7304.49.00Hastelloy C-276 Seamless Tube
Seamless circular tubes made from Hastelloy C-276, a nickel-molybdenum-chromium alloy with over 50% nickel content. These tubes are engineered for highly corrosive environments such as flue gas desulfurization systems. They are classified under tariff item 7304.49.00 as seamless, circular cross-section tubes of stainless steel.
7304.49.00Incoloy 800 Seamless Pipe
Seamless pipes made from Incoloy 800, a high-nickel alloy steel typically containing 30-35% nickel. These pipes are designed for elevated-temperature service in chemical processing applications where creep resistance and oxidation resistance are required. They are classified under tariff item 7304.49.00 as seamless, circular cross-section pipes of stainless steel.
7304.49.00Inconel 718 Seamless Pipe
High-strength seamless pipes made from Inconel 718, a high-nickel alloy steel containing 50-55% nickel. These pipes are used in gas turbine engine components where high strength and corrosion resistance at elevated temperatures are critical. They are classified under tariff item 7304.49.00 as seamless, circular cross-section pipes of stainless steel.
7304.49.00Instrument Grade Seamless Stainless Tubing 1/4-inch
Seamless 316L stainless steel tubing, 1/4-inch OD, used for instrumentation and control lines in oil & gas. Its circular cross-section and precision dimensions ensure reliable performance. It is classified as 'other' seamless stainless steel tubing, not further processed.
7304.49.00Monel 400 Seamless Tube
Seamless tubes made from Monel 400, a nickel-copper alloy with 63-70% nickel content. These tubes are ideal for seawater piping applications due to their excellent resistance to chloride-induced stress corrosion cracking. They are classified under tariff item 7304.49.00 as seamless, circular cross-section tubes of stainless steel.
7304.49.00Sanitary Seamless Stainless Steel Pipe 3-inch
Seamless 304 stainless steel pipe, 3-inch diameter, electropolished for dairy and pharmaceutical sanitary transfer lines. The electropolishing provides a smooth, hygienic surface. It is classified as 'other' seamless stainless steel pipe, prior to fittings or further working.
7304.49.00Stainless Steel Hollow Bar for Automotive Pistons
Seamless stainless steel hollow bar used in forging automotive piston blanks, with a circular cross-section. The high purity of the material reduces inclusions in engine components, improving performance and reliability. It is classified under tariff item 7304.49.00 as a seamless hollow profile of stainless steel.
7304.49.00Stainless Steel Hollow Bar for Valve Bodies
Seamless stainless steel hollow bar rough stock, with a circular cross-section, intended for machining into valve bodies for oil and gas applications. Its corrosion-resistant properties make it suitable for severe service conditions. Classified under tariff item 7304.49.00 as other seamless tubes, pipes, and hollow profiles of stainless steel.
7304.49.00Stainless Steel Seamless Condenser Tubing 3/4-inch
Seamless 316 stainless steel condenser repair tubing, 3/4-inch OD x 20 BWG, with circular cross-section, used for HVAC heat exchangers. It is classified as 'other' seamless stainless steel tube, excluding dedicated boiler stock. The U-bend capability is noted.
7304.49.00Stainless Steel Seamless Hollow Bar 304 Grade
A seamless hollow bar made from 304 stainless steel, featuring a circular cross-section, designed for use in machinery components. It is not suitable for drilling applications. Classified under tariff item 7304.49.00 as a hollow profile of stainless steel, other than those for drilling.
7304.49.00Stainless Steel Seamless Hypodermic Tubing 18 Gauge
Precision seamless stainless steel tubing, 18 gauge (~1mm OD), used in medical needles and instruments, with circular cross-section. It is classified as 'other' seamless stainless steel pipe or tube, not further worked.
7304.49.00TP321 Stainless Steel Seamless Pipe 4-inch NPS
Seamless TP321 stainless steel pipe, 4-inch nominal pipe size, with circular cross-section, used for high-temperature chemical processing. It is classified as 'other' seamless stainless steel pipe, not cold-worked or for specialized use.