Tubes and pipes, for boilers
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 > Tubes and pipes, for boilers
Duty Rate (from China)
Products classified under Tariff item 7304.39.00.60
125mm 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.
7304.39.00Refinery Furnace Process Tube OD 35mm
This is a seamless non-alloy steel tube with a 35mm outside diameter, designed for process furnaces in oil refineries handling high-temperature hydrocarbon streams. Its circular seamless construction and suitability for refining furnace 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.
7304.39.00SA-192 Boiler Feedwater Heater Tube OD 32mm
This is a seamless carbon steel tube manufactured to ASME SA-192 specifications, with a 32mm outside diameter, optimized for feedwater heaters in boiler systems to preheat incoming water. Its non-alloy steel composition and seamless 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.
7304.39.00SA-192 High-Pressure Boiler Tube
Seamless carbon steel tube manufactured to ASME SA-192, with a 75 mm outside diameter and wall thickness suitable for superheater applications in high-pressure boilers. As a seamless iron or non-alloy steel product with circular cross-section, it falls under tariff item 7304.39.00.
7304.39.00Schedule 40 Seamless Steel Pipe 2-inch
A seamless steel pipe with a 2-inch nominal diameter and Schedule 40 wall thickness, made from non-alloy steel with a circular cross-section. It is used for pressure piping in plumbing and industrial applications, fitting the 'Other' category of seamless pipes. This product is commonly used in water, gas, and steam distribution systems.
7304.39.00Schedule 80 Seamless Steel Pipe 1-1/4 inch
High-pressure seamless steel pipe with Schedule 80 wall thickness and a 1-1/4 inch nominal diameter, made from non-alloy steel. It has a circular cross-section and is used for demanding fluid transport in industrial piping systems. This product falls under the 'Other' category of seamless pipes.
7304.39.00Seamless Carbon Steel Boiler Tube OD 25mm
This is a seamless tube made from non-alloy steel with an outside diameter of 25mm, precision-engineered for use in high-pressure steam boilers. Its circular cross-section and seamless 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.
7304.39.00Seamless Hydraulic Cylinder Tube 4-inch
Precision seamless steel tube with a 4-inch outside diameter, made from non-alloy steel with a honed interior for hydraulic cylinder barrels. It is used in heavy machinery hydraulic systems, providing a smooth bore for piston movement. This product falls under the 'Other' category of seamless pipes and tubes.
7304.39.00Seamless Steel Axle Housing Tube 3-1/2 inch
Large diameter seamless non-alloy steel tube with a 3-1/2 inch outside diameter, used for heavy truck axle housings. It provides structural integrity in vehicle suspension systems and is made with a circular cross-section. This product falls under the 'Other' category of seamless pipes and tubes.
7304.39.00Seamless Steel Boiler Tube 3-inch
Seamless circular tube of non-alloy steel with a 3-inch diameter, designed for high-pressure boiler service. It meets ASTM A106 Grade B specifications for elevated temperature applications, ensuring reliability in steam generation. This product falls under the 'Other' category of seamless pipes.
7304.39.00Seamless Steel Condenser Tube 1-inch
Thin-wall seamless non-alloy steel tube with a 1-inch outside diameter, designed for heat exchanger condensers in power plants. It is made to withstand corrosive environments and may have enhanced surface treatment for improved heat transfer. This product falls under the 'Other' category of seamless tubes.
7304.39.00Seamless Steel Condenser Tube OD 28mm
This is a non-alloy seamless steel tube with a 28mm outside diameter, designed for steam condensers in power generation and industrial cooling systems. Its circular cross-section and seamless 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.
7304.39.00Seamless Steel Exhaust Tubing 1-1/2 inch
Seamless mild steel tubing with a 1-1/2 inch outside diameter, used for automotive exhaust manifolds and headers. It is made from non-alloy steel with a circular cross-section and withstands thermal cycling. This product falls under the 'Other' category of seamless pipes and tubes.
7304.39.00Seamless Steel Fence Post Tubing 2-3/8 inch
Heavy-duty seamless non-alloy steel tubing with a 2-3/8 inch outside diameter, used for chain-link fence posts and agricultural fencing. It has a circular cross-section and is suitable for structural outdoor use. This product falls under the 'Other' category of seamless pipes and tubes.
7304.39.00Seamless Steel Fin-Tube Base OD 30mm
This is a plain seamless tube with a 30mm outside diameter, serving as a base for aluminum finned heat exchanger tubes in air preheaters. Its non-alloy steel composition and seamless circular form qualify it under tariff item 7304.39.00, which covers other seamless tubes of iron or non-alloy steel with a circular cross-section, prior to fin attachment.
7304.39.00Seamless Steel Instrument Tube 3/4-inch
Small diameter seamless non-alloy steel tube with a 3/4-inch outside diameter, used for instrumentation and control lines. It offers high precision for pressure and temperature sensing systems, with a circular cross-section. This product falls under the 'Other' category of seamless tubes.
7304.39.00Seamless Steel Pneumatic Cylinder Barrel 2-inch
Precision ID honed seamless steel tube with a 2-inch bore, used for pneumatic cylinder barrels in automation equipment. It is made from non-alloy steel with a circular cross-section and provides a smooth interior surface. This product falls under the 'Other' category of seamless tubes.
7304.39.00Seamless Steel Pump Shaft Tube 5-inch
Large seamless non-alloy steel tube with a 5-inch diameter, used for centrifugal pump shafts and sleeves. It provides corrosion resistance in fluid handling pumps and has a circular cross-section. This product falls under the 'Other' category of seamless tubes.
7304.39.00Seamless Steel Roller Tube 6-inch
Heavy-wall seamless steel tube with a 6-inch diameter, used for conveyor rollers and industrial material handling equipment. It is made from non-alloy steel with a circular profile for bearing mounting. This product falls under the 'Other' category of seamless tubes.
7304.39.00Seamless Steel Structural Column Pipe 8-inch
Large diameter seamless non-alloy steel pipe with an 8-inch diameter, used for building column applications and structural supports. It provides high load-bearing capacity with a circular section. This product falls under the 'Other' category of seamless pipes.
7304.39.00Small Diameter Boiler Economizer Tube OD 16mm
This is an ultra-small 16mm outside diameter seamless carbon steel tube for economizer sections in industrial boilers, recovering waste heat. Its non-alloy seamless circular design and suitability for boilers qualify it under tariff item 7304.39.00, which covers other seamless tubes of iron or non-alloy steel with a circular cross-section.