Alloy Steel Heat Exchanger Tubing
Welded circular tubes of corrosion-resistant alloy steel, wall thickness 1.8 mm, for shell-and-tube heat exchangers in chemical processing. HTS 7306.50.50 as other thick-walled welded alloy tubes.
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More Specific Codes
This product may fall under a more specific subheading:
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If seamless cold-drawn for exchangers
Cold-finished seamless tubes have dedicated provisions in 7304.
If imported as complete heat exchanger unit
Assembled exchangers shift to Chapter 84 machinery.
If ferritic stainless alloy
Certain stainless alloys classify under 7306.40 instead of other alloys.
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Import Tips & Compliance
• U-tube bend radii and finning details should not alter base tube classification
• PED or ASME certification stamps facilitate customs clearance for pressure equipment
• Traceability numbers on bundles prevent mixing with stainless grades
Related Products under HTS 7306.50.50
Welded Alloy Steel Pressure Pipe 2-inch Schedule 40
This is a welded circular tube of alloy steel with a 2-inch diameter and wall thickness exceeding 1.65 mm, designed for high-pressure fluid transmission in industrial applications. It falls under HTS 7306.50.50 as it is welded, of circular cross-section, made from alloy steel, and has a wall thickness of 1.65 mm or more, categorized as 'other'. Commonly used in oil and gas pipelines or hydraulic systems.
Alloy Steel Structural Hollow Section 4x4 inch
A welded square hollow profile of alloy steel, standardized as 4x4 inches with wall thickness over 1.65 mm, used in construction frameworks and machinery supports. Classified under HTS 7306.50.50 due to its welded construction, alloy steel material, and 'other' status excluding specific exclusions, despite square shape fitting 'hollow profiles'.
Welded Alloy Steel Boiler Tube ASTM A213
High-temperature resistant welded tube of alloy steel per ASTM A213, circular cross-section with wall thickness ≥1.65 mm, for boiler and superheater service. HTS 7306.50.50 applies as 'other' welded circular tubes of alloy steel, thick-walled, not fitting line pipe or casing specifics.
Hydraulic Cylinder Barrel Alloy Steel Tube
Precision welded circular tube of alloy steel for hydraulic cylinder barrels, wall thickness over 1.65 mm, with smooth internal bore for piston operation. Under HTS 7306.50.50 as welded, thick-walled alloy steel tube, 'other' category for industrial fluid power applications.
Alloy Steel Exhaust Tubing 3-inch OD
Welded circular tubing of heat-resistant alloy steel, 3-inch outer diameter, wall ≥1.65 mm, for automotive and industrial exhaust systems. Classified in HTS 7306.50.50 as 'other' welded thick-walled alloy steel tubes, suitable for high-temperature gas conveyance.
Welded Alloy Steel Fence Tubing 2-inch
Galvanized welded alloy steel tubing, 2-inch diameter, thick wall >1.65 mm, for durable fencing and railing posts in corrosive environments. HTS 7306.50.50 covers this as other welded circular alloy steel tubes, excluding line pipe applications.