Other
Tubes, pipes and hollow profiles, seamless, of iron (other than cast iron) or steel. > Other, of circular cross-section, of other alloy steel: > Other > Standard pipes, of an external diameter not exceeding 60.3 mm: > Other
Duty Rate (from China)
Products classified under Tariff item 7304.59.00.1
17-4PH Stainless Alloy Seamless Bearing Tube
Seamless tube of 17-4PH precipitation-hardening stainless alloy steel, circular cross-section, used for corrosion-resistant ball and roller bearings in marine or food processing equipment. Heat-treatable to high strength, it falls under tariff item 7304.59.00 as other seamless tubes of alloy steel.
7304.59.002.25Cr-1Mo Boiler Feedwater Heater Tube
Seamless 2.25% chromium-1% molybdenum tubes for economizers and feedwater heaters in coal-fired boilers. Provides oxidation resistance up to 600°C, it falls under tariff item 7304.59.00 as other seamless tubes of alloy steel.
7304.59.00253MA Heat Exchanger Tube
Seamless 253MA austenitic steel tube for heat exchangers in boilers, with nitrogen-enhanced heat resistance up to 2000°F. Used in refining applications where high-temperature strength is critical.
7304.59.00310 Stainless Boiler Tube
Seamless 310 stainless steel tube certified heat-resisting for boiler tubes in high-temperature service. Resists scaling in superheaters and feedwater heaters, making it ideal for power generation equipment.
7304.59.00AISI 440C Stainless Bearing Race Tube
Seamless circular tube from AISI 440C martensitic stainless alloy steel, through-hardenable for high-carbon bearing rings in harsh environments. Precision tolerances for raceway forming, it fits under tariff item 7304.59.00 as other seamless tubes of alloy steel.
7304.59.00AL-6XN Condenser Tube
Seamless AL-6XN super-austenitic tube for seawater condensers and heat exchangers, offering pitting resistance at high temperatures. Used in power and refining applications where chloride corrosion is a concern.
7304.59.00Alloy 20 Feedwater Heater Tube
Seamless Alloy 20 tube for feedwater heaters in power plants, corrosion-resistant in chloride environments at elevated temperatures. Suitable for heat exchangers requiring resistance to sulfuric acid and other aggressive media.
7304.59.00Alloy 625 Condenser Repair Tube
Inconel Alloy 625 seamless tubes for condenser tube sheet repairs in nuclear and fossil plants. Exceptional corrosion resistance in chloride environments, it falls under tariff item 7304.59.00 as other seamless tubes of alloy steel.
7304.59.00Alloy 625 Superheater Tube
Seamless Alloy 625 tube for superheaters in power generation boilers, offering exceptional oxidation resistance at elevated temperatures. Used in feedwater heaters and refining furnaces where high-temperature strength is essential.
7304.59.00Alloy Condenser Tube Set 70mm OD
Bundled seamless alloy steel tubes, each with a 70 mm outside diameter, for condenser assemblies in turbines. Sold as a set for easy integration, but each tube is classified individually under tariff item 7304.59.00 as other seamless tubes of circular cross-section in other alloy steel. The set is not considered a composite article for classification purposes.
7304.59.00Alloy Steel Boiler Tube 50mm OD
Seamless alloy steel tube with a 50 mm outside diameter, designed specifically for use in high-pressure boilers. Its seamless construction and alloy composition ensure integrity under extreme pressure and temperature. Classified under tariff item 7304.59.00 as other seamless tubes of circular cross-section in other alloy steel.
7304.59.00Alloy Steel Boiler Tube OD 25.4mm
Seamless tube made from alloy steel, with an outside diameter of 25.4 mm, designed specifically for use in high-pressure boilers. Meets standards for elevated temperature service in superheaters and heat exchangers.
7304.59.00Alloy Steel Condenser Tube OD 22mm
Seamless alloy steel tube OD 22 mm for steam condensers in power generation plants. Provides excellent thermal conductivity and corrosion resistance in wet environments.
7304.59.00Alloy TP347H Boiler Tube OD 32mm
Seamless TP347H stabilized stainless alloy tube, 32 mm OD, for thick-walled boiler applications. Niobium stabilization prevents carbide precipitation in superheater service.
7304.59.00ASME SA-335 P11 Seamless Superheater Tube
SA-335 P11 grade seamless alloy steel tubes used in fossil fuel power plant superheaters for steam generation at extreme temperatures. The 1.25% chromium-molybdenum composition ensures creep resistance in boiler environments, it falls under tariff item 7304.59.00 as other seamless tubes of alloy steel.
7304.59.00Bearing-Quality 100Cr6 Seamless Steel Tube
Seamless circular tube of 100Cr6 (AISI 52100 equivalent) alloy steel, optimized for roller bearing rings with excellent through-hardening properties. Used by bearing manufacturers for high-load applications, it falls under tariff item 7304.59.00 as other seamless tubes of alloy steel.
7304.59.00Condenser Seamless Alloy Tube 60mm OD
Precision seamless alloy steel tube with a 60 mm outside diameter, intended for condensers in power and industrial plants. Its design supports efficient heat transfer in condensing applications, ensuring reliable performance. Classified under tariff item 7304.59.00 as other seamless tubes of circular cross-section in other alloy steel.
7304.59.00E52100 Cold-Drawn Seamless Bearing Stock Tube
Cold-drawn seamless E52100 alloy steel tube with mirror finish surface, circular cross-section for precision miniature ball bearings. Provides superior cleanliness for high-speed applications, it falls under tariff item 7304.59.00 as other seamless tubes of alloy steel.
7304.59.00Feedwater Heater Steel Tube 42mm OD
Alloy steel seamless tube with a 42 mm outside diameter, designed for feedwater heaters in boiler systems. It provides durability against water corrosion and pressure, making it suitable for demanding thermal environments. Classified under tariff item 7304.59.00 as other seamless tubes of circular cross-section in other alloy steel.
7304.59.00Grade 91 Refining Furnace Tube OD 30mm
Seamless Grade 91 (9Cr-1Mo-V) alloy steel tube OD 30 mm for refining furnace transfer lines. Normalized and tempered for creep strength above 600°C.
7304.59.00Hastelloy C-276 Heat Exchanger Tube
Seamless Hastelloy C-276 tube engineered for corrosive heat exchanger environments in chemical processing plants. Resists high temperatures and aggressive media in condensers and refining furnaces.
7304.59.00Hastelloy C-276 Seamless Heat Exchanger Tube
Hastelloy C-276 seamless tubes excel in corrosive heat exchanger service for chemical processing and refining condensers. The nickel-chromium-molybdenum alloy provides unmatched resistance in harsh environments, it falls under tariff item 7304.59.00 as other seamless tubes of alloy steel.
7304.59.00Haynes 230 Superheater Tube
Seamless Haynes 230 nickel-chromium alloy tube for gas turbine superheaters and industrial boilers. Exceptional high-temperature strength and oxidation resistance make it suitable for extreme service conditions.
7304.59.00Incoloy 800 Boiler Tube
Seamless tube made from Incoloy 800 alloy steel, designed for high-temperature applications in industrial boilers. Its heat-resisting properties allow it to withstand extreme temperatures and corrosive environments in superheaters.
7304.59.00Incoloy 800 Heat Exchanger Tube
Incoloy 800 seamless tubes are precision-engineered for heat exchangers in petrochemical plants, offering exceptional resistance to oxidation and carburization. These circular cross-section pipes withstand high temperatures, it falls under tariff item 7304.59.00 as other seamless tubes of alloy steel.
7304.59.00Inconel 600 Condenser Tube
Seamless Inconel 600 tube for condensers in steam power plants, providing superior resistance to steam and high-heat corrosion. Ideal for heat exchangers in refining operations.
7304.59.00M50 Alloy Steel Seamless Bearing Tube
Seamless tube from M50 high-speed alloy steel (AMS 6491), designed for aerospace ball bearing races requiring extreme hardness and fatigue resistance. Circular cross-section with precise ID/OD for finish machining, it falls under tariff item 7304.59.00 as other seamless tubes of alloy steel.
7304.59.00P22 Superheater Tube OD 28mm
Seamless P22 (2.25Cr-1Mo) alloy steel tube with a 28 mm outside diameter, engineered for superheater applications in utility boilers. It withstands prolonged exposure to steam at temperatures above 500°C, making it essential for high-temperature service. Classified under tariff item 7304.59.00 as other seamless tubes of circular cross-section in other alloy steel.
7304.59.00P5 Alloy Steel Refinery Furnace Tube
SA-335 P5 (5Cr-0.5Mo) seamless tubes for hydrogen reformers and cracking furnaces. Seamless design essential for high-purity hydrogen service, it falls under tariff item 7304.59.00 as other seamless tubes of alloy steel.
7304.59.00P5 Heat Exchanger U-Tube OD 25mm
Seamless P5 (5Cr-0.5Mo) alloy steel U-bent tube with a 25 mm outside diameter, designed for shell-and-tube heat exchangers. The bends are formed cold and stress-relieved to enhance fatigue resistance in demanding thermal cycling. Classified under tariff item 7304.59.00 as other seamless tubes of circular cross-section in other alloy steel.
7304.59.00P91 Alloy Steel Tube for Refining Furnace
Grade P91 (9Cr-1Mo-V) seamless tubes are engineered for cracking furnaces in oil refineries, enduring severe thermal cycling and carburizing atmospheres. Their circular seamless construction supports high-pressure hydrocarbon service, it falls under tariff item 7304.59.00 as other seamless tubes of alloy steel.
7304.59.00RA333 Furnace Tube
Seamless RA333 heat-resisting steel tube for refining furnaces, enduring carburizing atmospheres and temperatures up to 1800°F. Used in petrochemical heat exchangers where thermal stability is critical.
7304.59.00SA-213 TP304 Boiler Tube OD 19mm
Seamless TP304 stainless alloy steel tube per ASME SA-213, with a 19 mm outside diameter, used for superheaters and heat exchangers in power plants. Its corrosion resistance and high-temperature strength make it suitable for boiler applications. Classified under tariff item 7304.59.00 as other seamless tubes of circular cross-section in other alloy steel.
7304.59.00SA-213 TP347H Superheater Tube
TP347H stabilized stainless seamless tubes for superheaters in utility boilers, resisting intergranular corrosion after welding. Heavy wall construction handles 600°C+ steam conditions, it falls under tariff item 7304.59.00 as other seamless tubes of alloy steel.
7304.59.00SAE 52100 Seamless Alloy Steel Tube
High-precision seamless tube made from SAE 52100 alloy steel, featuring a circular cross-section and tight tolerances ideal for machining into inner or outer races of ball bearings. Its uniform microstructure and hardness make it suitable for tariff item 7304.59.00 as other seamless tubes of alloy steel.
7304.59.00Seamless Alloy Steel Boiler Tube SA-213 TP304
Seamless tube made from TP304 stainless alloy steel, designed specifically for high-pressure boilers and superheaters, meeting ASME SA-213 specifications. It features a circular cross-section and is cold-drawn for precision, it falls under tariff item 7304.59.00 as other seamless tubes of alloy steel.
7304.59.00T11 Alloy Heat Exchanger Tube OD 31.75mm
Seamless ASTM A335 Grade T11 alloy steel tube with a 31.75 mm outside diameter, optimized for condensers and feedwater heaters in refining furnaces. Its low alloy content provides creep resistance under thermal stress. Classified under tariff item 7304.59.00 as other seamless tubes of circular cross-section in other alloy steel.
7304.59.00T304 Stainless Condenser Tube for Feedwater Heaters
Seamless T304 stainless steel condenser tube designed for use in feedwater heaters and condenser units of steam turbines. Its circular cross-section and corrosion-resistant properties make it suitable for moist, high-pressure environments.
7304.59.00T5 Condenser Service Tube OD 20mm
Seamless T5 (5Cr-0.5Mo) alloy steel tube with a 20 mm outside diameter, intended for condenser water service in marine applications. It provides erosion resistance in high-velocity flows, ensuring durability in harsh environments. Classified under tariff item 7304.59.00 as other seamless tubes of circular cross-section in other alloy steel.
7304.59.00T9 Feedwater Heater Tube OD 35mm
Seamless ASTM A213 T9 alloy steel tube with a 35 mm outside diameter, designed for feedwater heaters in thermal power stations. Its high chromium content resists oxidation in preheated water systems. Classified under tariff item 7304.59.00 as other seamless tubes of circular cross-section in other alloy steel.