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Tubes, pipes and hollow profiles, seamless, of iron (other than cast iron) or steel. > Other
Duty Rate (from China)
Subheadings
Products classified under Tariff item 7304.90
17-4PH Stainless Alloy Seamless Pipe (Alloy Steel Classification)
Seamless pipe made from 17-4PH precipitation-hardening stainless alloy, with wall thickness exceeding 4 mm, used in aerospace and valve body applications. Despite high chromium content, it is classified as alloy steel tube under this tariff item.
7304.90.004140 Alloy Steel Seamless Round Tube for Hydraulic Cylinders
Seamless 4140 chrome-molybdenum alloy steel tube with wall thickness between 4 and 10 mm, precision bored for hydraulic cylinder barrels in heavy equipment. Classified as alloy steel seamless tube under this tariff item.
7304.90.009% Nickel Alloy Steel Seamless Pipe for LNG Storage
Seamless pipe of 9% nickel alloy steel with wall thickness over 4 mm, engineered for cryogenic LNG storage tanks. The high nickel content provides toughness at extreme low temperatures, qualifying it as alloy steel seamless pipe.
7304.90.00Alloy Steel Seamless Boiler Tube ASTM A335 P11
Seamless boiler tube made from 1.25% chromium-molybdenum alloy steel (ASTM A335 P11 grade), designed for high-pressure boiler applications with wall thickness exceeding 4 mm. Classified as alloy steel seamless tube.
7304.90.00Alloy Steel Seamless Hollow Profile for Structural Supports
Seamless hollow profile of alloy steel (e.g., AISI 4140) with wall thickness of 4 mm or more, used in heavy machinery structural frames. Classified as alloy steel seamless hollow profile under this tariff item.
7304.90.00Alloy Steel Seamless Pipe for Oil & Gas Drilling API 5CT L80
Seamless alloy steel pipe (API 5CT L80 grade) with wall thickness of 4 mm or more, used in oil and gas well casings and tubing. The high-strength alloy construction qualifies it under this tariff item.
7304.90.00Alloy Steel Seamless Tube for Automotive Axle Shafts
Seamless alloy steel tube (e.g., 4340 grade) with walls of 4 mm or more, used for manufacturing heavy-duty axle shafts in trucks. Classified as alloy steel seamless tube prior to machining.
7304.90.00ASTM A213 T22 Seamless Alloy Steel Heat-Exchanger Tube
Seamless tube of 2.25% chromium-1% molybdenum alloy steel (ASTM A213 T22) for heat exchangers, with wall thickness of 4 mm or more. Classified as alloy steel seamless tube under this tariff item.
7304.90.00Automotive Seamless Steel Brake Lines
Seamless nonalloy steel tubes with thin walls (less than 4 mm) for hydraulic brake systems in vehicles. Classified as seamless pipes of iron or nonalloy steel, not as vehicle parts.
7304.90.00Chrome-Moly P91 Seamless Pipe for Power Plant Superheaters
Seamless P91 grade (9Cr-1Mo-V) alloy steel pipe with wall thickness of 4 mm or more, used for superheater tubes in fossil fuel power plants. Classified as thick-walled seamless alloy steel tube for high-temperature steam service.
7304.90.00Heavy Duty Seamless Steel Fence Post
A tall seamless nonalloy steel tube with thick walls (4 mm or more) used as a fence or gate post in agricultural and perimeter fencing. Its seamless construction and material composition place it under tariff item 7304.90.00 as 'Other' seamless tubes and pipes of iron or nonalloy steel.
7304.90.00Heavy Seamless Steel Chimney Liner
A seamless nonalloy steel liner tube with walls of 4 mm or more, designed for industrial chimney stacks. Its seamless manufacture and thick walls classify it under tariff item 7304.90.00 as 'Other' seamless tubes of iron or nonalloy steel.
7304.90.00Heavy Wall Seamless Steel Casing Tube
A seamless nonalloy steel tube with a wall thickness of 4 mm or more, used as protective casing in oil well drilling. Its seamless construction and material composition place it under tariff item 7304.90.00 as 'Other' seamless tubes and pipes of iron or nonalloy steel.
7304.90.00Heavy Wall Seamless Steel Guardrail Post
A seamless nonalloy steel tube with walls over 4 mm, used for highway guardrail support posts. Its seamless manufacture and thick walls classify it under tariff item 7304.90.00 as 'Other' seamless tubes of iron or nonalloy steel.
7304.90.00Inconel 625 Seamless Alloy Tube for Chemical Processing
Seamless tube of Inconel 625 nickel-chromium-molybdenum alloy with wall thickness of 4 mm or more, resistant to corrosive chemicals. Classified as high-alloy seamless tube under this tariff item for use in reactors and processing equipment.
7304.90.00Industrial Seamless Steel Condenser Tubes
Thin-walled seamless pipes of nonalloy steel (wall thickness less than 4 mm) for heat exchanger condensers in power plants. Classified as seamless hollow profiles of iron or nonalloy steel.
7304.90.00Industrial Seamless Steel Cooling Tubes
Thin-walled seamless nonalloy steel tubes (wall thickness less than 4 mm) for liquid cooling circuits in manufacturing equipment. Classified as seamless pipes of iron or nonalloy steel.
7304.90.00Laboratory Seamless Steel Vacuum Tubing
Precision seamless nonalloy steel tubes with wall thickness under 4 mm for vacuum systems in laboratory equipment. Classified as thin-walled seamless pipes of iron or nonalloy steel.
7304.90.00Nonalloy Steel Bicycle Frame Tubes
Lightweight seamless tubes of nonalloy steel with wall thickness under 4 mm for bicycle frame construction. Classified as thin-walled seamless pipes suitable for lightweight frames.
7304.90.00Nonalloy Steel Boiler Flue Pipes
Seamless thin-walled pipes of iron or nonalloy steel, designed to convey hot gases in boiler systems. With a wall thickness under 4 mm, they qualify as seamless hollow profiles under tariff item 7304.90.00. These pipes are essential for efficient heat transfer and durability in high-temperature environments.
7304.90.00Nonalloy Steel Furniture Frame Tubes
Seamless thin-walled tubes of nonalloy steel, used in the construction of metal furniture such as chair and table legs. With a wall thickness under 4 mm, they are classified as seamless hollow profiles under tariff item 7304.90.00. These tubes provide structural strength and a smooth finish suitable for furniture applications.
7304.90.00Nonalloy Steel Seamless Anchor Rod Tube
A seamless thick-walled (4 mm+) tube of nonalloy steel for rock anchor rods in tunneling and mining. Its seamless construction and material composition place it under tariff item 7304.90.00 as 'Other' seamless tubes and pipes of iron or nonalloy steel.
7304.90.00Nonalloy Steel Seamless Line Pipe
A heavy-walled seamless pipe of nonalloy steel, with wall thickness over 4 mm, used for oil and gas transmission lines. Its seamless manufacture and thick walls classify it under tariff item 7304.90.00 as 'Other' seamless tubes of iron or nonalloy steel.
7304.90.00Nonalloy Steel Seamless Mechanical Tubing
A seamless tubing of nonalloy steel with 4 mm+ walls for mechanical shafts and structural components in vehicles. Its seamless construction and material composition place it under tariff item 7304.90.00 as 'Other' seamless tubes and pipes of iron or nonalloy steel.
7304.90.00Nonalloy Steel Seamless Torsion Bar Tube
A seamless thick-wall tube of nonalloy steel for vehicle suspension torsion bars. Its seamless manufacture and thick walls classify it under tariff item 7304.90.00 as 'Other' seamless tubes of iron or nonalloy steel.
7304.90.00Precision Seamless Steel Instrument Tubing
High-precision seamless tubes of nonalloy steel with a wall thickness under 4 mm, used for instrumentation and control lines in industrial applications. These tubes ensure accurate fluid or gas transmission and are classified under tariff item 7304.90.00 as seamless hollow profiles. Their precision manufacturing meets stringent tolerances for control systems.
7304.90.00Seamless Carbon Steel Boiler Tube
A seamless tube made from nonalloy steel with a wall thickness exceeding 4 mm, designed for high-pressure boiler applications in industrial settings. Its seamless construction and material composition place it under tariff item 7304.90.00 as 'Other' seamless tubes and pipes of iron or nonalloy steel.
7304.90.00Seamless Carbon Steel Heat Exchanger Tube
A nonalloy seamless tube with wall thickness of 4 mm or more, for shell-and-tube heat exchangers in refineries. Its seamless manufacture and thick walls classify it under tariff item 7304.90.00 as 'Other' seamless tubes of iron or nonalloy steel.
7304.90.00Seamless Iron Hydraulic Cylinder Tube
A seamless tube of iron or nonalloy steel, with wall over 4 mm, precision-honed for hydraulic cylinder barrels in machinery. Its seamless construction and material composition place it under tariff item 7304.90.00 as 'Other' seamless tubes and pipes of iron or nonalloy steel.
7304.90.00Seamless Nonalloy Steel Flagpole Pipes
Tall, thin-walled seamless pipes of nonalloy steel designed for flagpole shafts. With a wall thickness under 4 mm, they are classified under tariff item 7304.90.00 as seamless hollow profiles. These pipes offer the strength and lightness needed for flagpole construction.
7304.90.00Seamless Nonalloy Steel Structural Pipe
A seamless pipe from nonalloy steel with walls thicker than 4 mm, employed in construction for load-bearing columns and supports. Its seamless manufacture and thick walls classify it under tariff item 7304.90.00 as 'Other' seamless tubes of iron or nonalloy steel.
7304.90.00Seamless Steel Air Compressor Lines
Thin-walled seamless pipes of nonalloy steel for compressed air delivery in industrial compressors. With a wall thickness under 4 mm, they are classified under tariff item 7304.90.00 as seamless hollow profiles. These pipes ensure reliable and leak-free air transmission in demanding environments.
7304.90.00Seamless Steel Gas Line Tubing
Thin-walled seamless nonalloy steel tubes for natural gas distribution lines in industrial settings. With a wall thickness under 4 mm, they are classified under tariff item 7304.90.00 as seamless hollow profiles. These tubes provide safe and efficient gas conveyance in various applications.
7304.90.00Seamless Steel Hydraulic Tubing
Thin-walled seamless tubes of nonalloy steel used in hydraulic systems for machinery and equipment. With a wall thickness under 4 mm, they are classified under tariff item 7304.90.00 as seamless hollow profiles. These tubes offer high strength and precision for reliable hydraulic fluid transmission.
7304.90.00Seamless Steel Medical Gas Pipes
Thin-walled seamless nonalloy steel pipes certified for medical oxygen and gas delivery systems. With a wall thickness under 4 mm, they are classified under tariff item 7304.90.00 as seamless hollow profiles. These clean, seamless tubes ensure safe and hygienic gas transmission in medical environments.
7304.90.00Seamless Steel Pile Shell
An extra-thick seamless nonalloy steel shell (wall >4 mm) for concrete-filled foundation piles in construction. Its seamless construction and material composition place it under tariff item 7304.90.00 as 'Other' seamless tubes and pipes of iron or nonalloy steel.
7304.90.00Thick Seamless Steel Roller Tube
A heavy-walled (4 mm+) seamless nonalloy steel tube for conveyor rollers and industrial machinery. Its seamless manufacture and thick walls classify it under tariff item 7304.90.00 as 'Other' seamless tubes of iron or nonalloy steel.
7304.90.00Thick-Wall Seamless Steel Pressure Pipe
A nonalloy steel seamless pipe designed for high-pressure fluid transport, with wall thickness of 4 mm or greater. Its seamless construction and material composition place it under tariff item 7304.90.00 as 'Other' seamless tubes and pipes of iron or nonalloy steel.
7304.90.00Thin Seamless Steel Exhaust Tubing
Seamless nonalloy steel tubes with a wall thickness under 4 mm for automotive exhaust manifolds and downpipes. Classified under tariff item 7304.90.00 as thin-walled seamless pipes, these tubes offer durability and heat resistance for exhaust systems. Their seamless construction ensures leak-free performance.
7304.90.00Thin-Wall Seamless Steel Structural Pipes
Seamless pipes of nonalloy steel with a wall thickness under 4 mm for lightweight structural frameworks in construction. Classified under tariff item 7304.90.00 as thin-walled seamless hollow profiles, these pipes offer strength and reduced weight for structural applications. They are suitable for various building and framework uses.