Other
Tubes, pipes and hollow profiles, seamless, of iron (other than cast iron) or steel. > Other, of circular cross-section, of iron or non-alloy steel: > Other
Duty Rate (from China)
Products classified under Tariff item 7304.3
Boiler Economizer Tube
A cold-rolled seamless steel tube designed for economizer sections in recovery boilers, enhancing preheating efficiency through improved heat transfer. Its non-alloy composition offers cost-effective performance for high-volume industrial applications. This product falls under tariff item 7304.31.00 as a cold-drawn or cold-rolled seamless tube of iron or non-alloy steel with a circular cross-section.
7304.31.00Cold-Drawn Boiler Tube ASTM A179
A seamless carbon steel tube, cold-drawn with a circular cross-section, specifically designed for fire-tube boilers to convey high-pressure steam and water. It meets ASTM A179 specifications for low-carbon steel, ensuring reliable performance in demanding thermal environments. This product is classified under 7304.31.00 as a cold-drawn seamless tube of non-alloy steel.
7304.31.00Cold-Drawn Evaporator Condenser Tube
A seamless tube designed for evaporator-condenser circuits in refining distillation columns, offering efficient heat transfer in demanding process conditions. Its cold-drawn construction ensures precise dimensional tolerances and enhanced mechanical properties. This product falls under 7304.31.00 as a cold-drawn seamless tube of non-alloy steel with circular cross-section.
7304.31.00Cold-Drawn Hollow Bar for Axle Housings
Cold-drawn seamless non-alloy steel hollow bar, 70mm outer diameter with a 7mm wall, used for axle housing tubes. The cold-drawing process imparts precise dimensions and a smooth surface, making it suitable for automotive applications.
7304.31.00Cold-Drawn S20C Hollow Bar
Cold-drawn seamless non-alloy steel hollow bar, 50mm outer diameter with a 5mm wall, made from JIS S20C steel for general machinery. The cold-drawing process ensures tight tolerances and improved mechanical properties.
7304.31.00Cold-Drawn Seamless Steel Antenna Mast Tube
Cold-drawn seamless non-alloy steel tube sections used to construct telescoping antenna masts. The cold-drawing process provides precise dimensions and a smooth surface, making it suitable for antenna applications. This product falls under tariff item 7304.31.00 as a cold-drawn seamless tube of circular cross-section made of iron or non-alloy steel.
7304.31.00Cold-Drawn Seamless Steel Flagpole Shaft Tube
Cold-drawn seamless non-alloy steel tube serving as the main shaft for outdoor flagpoles. The cold-drawing process ensures a uniform wall thickness and high strength, ideal for supporting flags in various weather conditions. This product is classified under tariff item 7304.31.00 as a cold-drawn seamless tube of circular cross-section made of iron or non-alloy steel.
7304.31.00Cold-Drawn Seamless Steel Furniture Frame Tube
Lightweight cold-drawn seamless non-alloy steel tube used in the structural frames of modern furniture. The cold-drawing process provides a smooth finish and precise dimensions, making it suitable for furniture applications. This product falls under tariff item 7304.31.00 as a cold-drawn seamless tube of circular cross-section made of iron or non-alloy steel.
7304.31.00Cold-Drawn Seamless Steel Handlebar Tube
Cold-drawn seamless non-alloy steel tube shaped for bicycle or motorcycle handlebars. The cold-drawing process ensures precise dimensions and high strength, essential for handlebar applications. This product is classified under tariff item 7304.31.00 as a cold-drawn seamless tube of circular cross-section made of iron or non-alloy steel.
7304.31.00Cold-Drawn Seamless Steel Hollow Bar 1020 Grade
Seamless cold-drawn hollow bar made from low-carbon non-alloy steel (SAE 1020), with a circular cross-section, 50mm outer diameter, and 5mm wall thickness. This product is used in various mechanical applications requiring precision and strength.
7304.31.00Cold-Drawn Seamless Steel Hydraulic Tube
A seamless tube made from non-alloy steel, cold-drawn to precise tolerances for use in hydraulic systems and cylinders. The cold-drawing process ensures a smooth internal surface and accurate dimensions, critical for hydraulic applications. This product falls under tariff item 7304.31.00 as a cold-drawn seamless tube of circular cross-section made of iron or non-alloy steel.
7304.31.00Cold-Drawn Seamless Steel Shock Absorber Tube
High-precision cold-drawn seamless non-alloy steel tube used in automotive shock absorbers for smooth piston movement. The cold-drawing process provides a precise internal surface and tight tolerances, essential for shock absorber performance. This product is classified under tariff item 7304.31.00 as a cold-drawn seamless tube of circular cross-section made of iron or non-alloy steel.
7304.31.00Cold-Drawn Seamless Steel Trolley Frame Tube
Cold-drawn seamless non-alloy steel tubes forming frames for industrial trolleys and carts. The cold-drawing process provides strength and durability, suitable for demanding industrial applications. This product falls under tariff item 7304.31.00 as a cold-drawn seamless tube of circular cross-section made of iron or non-alloy steel.
7304.31.00Cold-Drawn Seamless Steel Umbrella Rib Tube
Thin cold-drawn seamless non-alloy steel tubes forming the rib structure of large umbrellas. The cold-drawing process allows for thin walls while maintaining strength, ideal for umbrella ribs. This product is classified under tariff item 7304.31.00 as a cold-drawn seamless tube of circular cross-section made of iron or non-alloy steel.
7304.31.00Cold-Drawn U-Tube for Heat Exchangers
A seamless cold-formed U-shaped carbon steel tube for removable bundles in process heat exchangers, featuring a non-alloy composition with 0.8-2.0 mm wall thickness. Its U-shape design accommodates thermal expansion in refining service, ensuring reliable performance under temperature fluctuations. This product is classified under 7304.31.00 as a cold-drawn seamless tube of non-alloy steel.
7304.31.00Cold-Formed Hollow Steel Bar for Frames
Cold-formed seamless non-alloy steel hollow bar, 38mm outer diameter with a 3.8mm wall, used for machine frames. The cold-forming process provides dimensional accuracy and a smooth finish, suitable for structural applications.
7304.31.00Cold-Reduced Heat Exchanger Tube ASTM A213 T11
A seamless cold-reduced carbon steel tube, an ASTM A179 variant designed for shell-and-tube heat exchangers in refining operations. Its thin wall and circular profile facilitate efficient heat transfer while maintaining structural integrity. This product falls under 7304.31.00 as a cold-drawn or cold-rolled seamless tube of non-alloy steel.
7304.31.00Cold-Reduced Seamless Hollow Bar 35mm OD
Cold-reduced seamless hollow bar of non-alloy steel, 35mm outer diameter with a 3.5mm wall, used for furniture frame tubing. The cold-reduction process enhances strength and precision, making it ideal for lightweight structural applications.
7304.31.00Cold-Reduced Seamless Steel Display Stand Tube
Cold-reduced seamless non-alloy steel tubes for retail display stands and shelving supports. The cold-reduction process provides a smooth finish and precise dimensions, suitable for display applications. This product falls under tariff item 7304.31.00 as a cold-reduced seamless tube of circular cross-section made of iron or non-alloy steel.
7304.31.00Cold-Reduced Seamless Steel Instrumentation Tubing
Cold-reduced seamless tube from non-alloy steel for instrumentation and control systems in industrial machinery. The cold-reduction process ensures precise dimensions and a smooth surface, critical for instrumentation applications. This product is classified under tariff item 7304.31.00 as a cold-reduced seamless tube of circular cross-section made of iron or non-alloy steel.
7304.31.00Cold-Reduced Seamless Steel Medical Equipment Tube
Precision cold-reduced seamless non-alloy steel tube for hospital bed frames and medical carts. The cold-reduction process provides a smooth finish and precise dimensions, suitable for medical equipment applications. This product falls under tariff item 7304.31.00 as a cold-reduced seamless tube of circular cross-section made of iron or non-alloy steel.
7304.31.00Cold-Rolled Hydraulic Cylinder Tube Stock
Precision cold-rolled seamless hollow bar, 80mm outer diameter with an 8mm wall, made of non-alloy steel for machining hydraulic cylinder barrels. The cold-rolling process ensures high dimensional accuracy and a smooth surface finish.
7304.31.00Cold-Rolled Round Hollow Profile 42mm
Cold-rolled seamless non-alloy steel hollow profile, 42mm outer diameter with a 4.2mm wall, used for tooling applications. The cold-rolling process provides precise dimensions and improved mechanical properties.
7304.31.00Cold-Rolled Seamless Steel Bicycle Frame Tube
High-strength cold-rolled seamless non-alloy steel tubing for bicycle frames, offering lightweight durability. The cold-rolling process provides a smooth finish and precise dimensions, ideal for bicycle frame applications. This product is classified under tariff item 7304.31.00 as a cold-rolled seamless tube of circular cross-section made of iron or non-alloy steel.
7304.31.00Cold-Rolled Seamless Steel Gym Equipment Tube
Cold-rolled seamless non-alloy steel tubing for weightlifting racks and gym machine frames. The cold-rolling process provides strength and durability, suitable for demanding gym equipment applications. This product falls under tariff item 7304.31.00 as a cold-rolled seamless tube of circular cross-section made of iron or non-alloy steel.
7304.31.00Cold-Rolled Seamless Steel Pneumatic Cylinder Tube
Precision cold-rolled seamless tube of non-alloy steel designed for pneumatic cylinders in automation equipment. The cold-rolling process ensures a smooth internal surface and precise dimensions, critical for pneumatic applications. This product is classified under tariff item 7304.31.00 as a cold-rolled seamless tube of circular cross-section made of iron or non-alloy steel.
7304.31.00Cold-Rolled Seamless Steel Roll Cage Tube
High-tensile cold-rolled seamless non-alloy steel tubing for racing roll cages. The cold-rolling process provides high strength and precise dimensions, essential for safety-critical roll cage applications. This product falls under tariff item 7304.31.00 as a cold-rolled seamless tube of circular cross-section made of iron or non-alloy steel.
7304.31.00Cold-Rolled Steel Hollow Bar for Automotive Shafts
Precision cold-rolled seamless hollow bar of non-alloy steel, 40mm outer diameter with a 4mm wall, designed for manufacturing drive shafts in vehicles. The cold-rolling process ensures high strength and dimensional accuracy.
7304.31.00Cold-Rolled Superheater Element Tube
A seamless tube element for pendant superheater assemblies in coal-fired boilers, cold-formed for shop fabrication and designed to withstand high-temperature steam conditions. Its non-alloy steel composition offers a cost-effective solution for superheater applications. This product is classified under 7304.31.00 as a cold-drawn or cold-rolled seamless tube of non-alloy steel.
7304.31.00Condenser Service Seamless Steel Tube
A cold-drawn seamless non-alloy steel tube optimized for surface condensers in steam power plants, with enhanced corrosion resistance for cooling water duty. Its circular cross-section and cold-rolled finish ensure tight dimensional tolerances for reliable condenser performance. This product falls under 7304.31.00 as a cold-drawn seamless tube of non-alloy steel.
7304.31.00Cracking Furnace Tube Alloy Substitute
A cold-drawn seamless tube functioning as a non-alloy alternative in ethylene cracking furnaces, with a circular profile that resists creep at high temperatures up to 900°C. Its design offers a cost-effective solution for refining furnace applications while maintaining performance. This product is classified under 7304.31.00 as a cold-drawn seamless tube of non-alloy steel.
7304.31.00Deaerator Heater Tube
A seamless cold-rolled tube bundle for deaerating feedwater heaters, designed to remove dissolved oxygen from boiler feedwater. Its non-alloy steel construction provides reliable performance in feedwater heating applications. This product falls under 7304.31.00 as a cold-drawn or cold-rolled seamless tube of non-alloy steel.
7304.31.00DOM Cold-Drawn Hollow Steel Bar
Drawn-over-mandrel (DOM) cold-drawn seamless hollow bar, non-alloy steel, 45mm outer diameter with a 4.5mm wall, used for shafts. The DOM process provides superior concentricity and surface finish.
7304.31.00Feedwater Heater Tube SA-210
An ASME SA-210 Grade A1 cold-drawn seamless carbon steel tube for economizer and feedwater heaters in utility boilers, featuring high thermal conductivity for efficient heat transfer. Its medium wall thickness and circular cross-section facilitate bundle insertion and reliable operation. This product is classified under 7304.31.00 as a cold-drawn seamless tube of non-alloy steel.
7304.31.00Mechanical Hollow Bar Cold-Rolled 1045
Cold-rolled seamless 1045 medium-carbon non-alloy steel hollow bar, 65mm outer diameter with a 6.5mm wall, used for gears and shafts. The cold-rolling process enhances strength and wear resistance.
7304.31.00Nonalloy Cold-Reduced Hollow Mechanical Bar
General-purpose cold-reduced seamless hollow bar, non-alloy steel, 48mm outer diameter with a 4.8mm wall. This product is used in various mechanical applications requiring precision and strength.
7304.31.00Nonalloy Steel Hollow Bar for Bicycle Frames
Cold-drawn seamless hollow bar, 25.4mm outer diameter with a 2mm wall, made of non-alloy steel for high-end bicycle frame construction. The cold-drawing process provides lightweight strength and precise dimensions.
7304.31.00Precision Cold-Reduced Steel Hollow Profile
Cold-reduced seamless hollow bar, 30mm outer diameter with a 3mm wall, made of non-alloy steel for robotic arm components. The cold-reduction process ensures high precision and strength.
7304.31.00SAE 1018 Cold-Drawn Hollow Steel Bar
Seamless cold-drawn hollow bar in SAE 1018 non-alloy steel, 60mm outer diameter with a 6mm wall thickness, used for hydraulic cylinder bodies. The cold-drawing process provides a smooth surface and precise dimensions.
7304.31.00ST37 Cold-Drawn Hollow Bar
DIN ST37 non-alloy steel cold-drawn hollow bar, 55mm outer diameter with a 5.5mm wall, used for construction machinery. The cold-drawing process ensures dimensional accuracy and strength.
7304.39.00125mm Steam Drum Tube
This is a large 125mm outside diameter seamless tube for steam drum risers in industrial boilers, connecting waterwall tubes to the steam drum in high-pressure systems. Its non-alloy steel composition and seamless circular construction qualify it under tariff item 7304.39.00, which covers other seamless tubes of iron or non-alloy steel with a circular cross-section.
7304.39.0050mm OD Boiler Economizer Tube
This is a seamless carbon steel economizer tube with a 50mm outside diameter, used for recovering waste heat in boiler stacks. Its non-alloy steel composition and seamless circular construction qualify it under tariff item 7304.39.00, which covers other seamless tubes of iron or non-alloy steel with a circular cross-section.
7304.39.00ASTM A106 Grade B Feedwater Heater Tube
This is a seamless A106 Grade B carbon steel tube with a 152.4mm outside diameter, used for feedwater heaters in steam cycles. Its non-alloy steel composition and seamless circular construction qualify it under tariff item 7304.39.00, which covers other seamless tubes of iron or non-alloy steel with a circular cross-section.
7304.39.00ASTM A179 Carbon Steel Boiler Tube
This is a seamless carbon steel tube designed for use in heat exchangers and boilers, with an outside diameter of 50mm, meeting ASTM A179 specifications for low-carbon steel suitable for bending and flanging. Its non-alloy steel composition and seamless circular construction qualify it under tariff item 7304.39.00, which covers other seamless tubes of iron or non-alloy steel with a circular cross-section.
7304.39.00ASTM A179 Carbon Steel Superheater Tube OD 19mm
This is a seamless cold-drawn carbon steel tube with a 19mm outside diameter, manufactured to ASTM A179 standards for use in superheater applications within power plants. Its non-alloy steel composition and circular seamless construction qualify it under tariff item 7304.39.00, which covers other seamless tubes and pipes of iron or non-alloy steel with a circular cross-section.
7304.39.00ASTM A210 Grade A1 Heat Exchanger Tube
This is a seamless medium-carbon steel tube manufactured to ASTM A210 Grade A1 specifications, with a 100mm outside diameter, for condenser and heat exchanger service in refining furnaces. Its non-alloy steel composition and seamless circular construction qualify it under tariff item 7304.39.00, which covers other seamless tubes of iron or non-alloy steel with a circular cross-section.
7304.39.00ASTM A333 Grade 6 Low-Temp Seamless Pipe 4-inch
Seamless carbon steel pipe conforming to ASTM A333 Grade 6, with a 4-inch diameter, designed for low-temperature service down to -46°C. Made from non-alloy steel with a circular cross-section, it is used in cryogenic piping systems. This product falls under tariff item 7304.39.00 as 'Other' seamless pipes of iron or non-alloy steel.
7304.39.00ASTM A519 Seamless Mechanical Tubing 1-1/2 inch
Seamless carbon steel mechanical tubing per ASTM A519, with a 1-1/2 inch outside diameter, used for machinery shafts and structural applications. It is made from non-alloy steel with a circular cross-section, fitting the 'Other' category of seamless pipes and tubes. This product is suitable for general engineering purposes.
7304.39.00Boiler Economizer Tube 230mm OD BS 3059 Grade 360
Seamless carbon steel tube to BS 3059 Grade 360, with a 230 mm outside diameter, used in economizer sections to preheat boiler feedwater and enhance efficiency in recovery boilers. As a seamless iron or non-alloy steel product with circular cross-section, it is classified under tariff item 7304.39.00.
7304.39.00Carbon Steel Heat Exchanger U-Tube OD 22mm
This is a bent seamless carbon steel U-tube with a 22mm outside diameter, designed for shell-and-tube heat exchangers in refining and chemical processing. Its non-alloy steel composition and seamless circular profile make it classifiable under tariff item 7304.39.00, which covers other seamless tubes of iron or non-alloy steel with a circular cross-section.
7304.39.00Carbon Steel Superheater Tube 2-inch Schedule 40
Seamless carbon steel tube, 60.3 mm outside diameter, Schedule 40 wall thickness, designed for superheater service in utility boilers. Manufactured from iron or non-alloy steel with a circular cross-section, it meets the requirements of tariff item 7304.39.00 for other seamless tubes of iron or non-alloy steel.
7304.39.00Condenser Seamless Pipe 240mm OD API 5L Gr B
Seamless non-alloy steel pipe, 240 mm outside diameter, manufactured to API 5L Grade B, for steam surface condensers in power generation. The pipe withstands vacuum and corrosive cooling water conditions, and as a seamless iron or non-alloy steel product with circular cross-section, it falls under tariff item 7304.39.00.
7304.39.00Condenser Service Water Tube 3-inch
Seamless carbon steel tube, 76.2 mm outside diameter, intended for condenser service water systems in power plants. Made from iron or non-alloy steel with a circular cross-section, it is classified under tariff item 7304.39.00 for other seamless tubes of this material.
7304.39.00Condenser Service Water Tube OD 34mm
This is a seamless non-alloy steel tube with a 34mm outside diameter, used for the service water side of surface condensers in nuclear and fossil power plants. Its circular seamless construction and suitability for condenser applications qualify it under tariff item 7304.39.00, which covers other seamless tubes of iron or non-alloy steel with a circular cross-section.
7304.39.00Feedwater Heater Pipe 210mm OD ASTM A334 Grade 1
Seamless carbon steel pipe, 210 mm outside diameter, manufactured to ASTM A334 Grade 1 with low-temperature impact properties, for feedwater heaters in closed-loop heating of boiler feedwater in utility plants. As a seamless iron or non-alloy steel product with circular cross-section, it is classified under tariff item 7304.39.00.
7304.39.00Heat Exchanger Tube 200mm OD ASTM A179
Cold-drawn seamless carbon steel tube, 200 mm outside diameter, manufactured to ASTM A179, optimized for condenser and heat exchanger shells in refining processes. The tube provides excellent heat transfer and corrosion resistance in water-steam cycles, and as a seamless iron or non-alloy steel product with circular cross-section, it falls under tariff item 7304.39.00.
7304.39.00Heat Recovery Steam Generator Tube
Seamless carbon steel tube, 89 mm outside diameter, used in high-pressure sections of heat recovery steam generators (HRSG) in gas turbine combined cycle plants. The tube recovers turbine exhaust heat to generate steam, and as a seamless iron or non-alloy steel product with circular cross-section, it falls under tariff item 7304.39.00.
7304.39.00High-Pressure Carbon Steel Tube OD 12.7mm
This is a metric 12.7mm outside diameter seamless carbon steel tube, rated for high-pressure zones in utility boiler superheaters. Its small diameter, circular seamless profile, and non-alloy steel composition place it under tariff item 7304.39.00, which covers other seamless tubes of iron or non-alloy steel with a circular cross-section.
7304.39.00Pressure Vessel Seamless Tube 270mm OD EN 10216-2 P265GH
Seamless tube manufactured to EN 10216-2 P265GH, with a 270 mm outside diameter, for high-pressure sections of boiler drums and superheater headers. The tube is supplied in normalized condition for weldability in fabrication, and as a seamless iron or non-alloy steel product with circular cross-section, it is classified under tariff item 7304.39.00.
7304.39.00Refinery Furnace Process Tube 4-inch
Seamless carbon steel tube, 101.6 mm outside diameter, designed for process lines and transfer lines in refinery furnaces. Manufactured from iron or non-alloy steel with a circular cross-section, it is classified under tariff item 7304.39.00 for other seamless tubes of this material.