SA-213 TP310 Seamless Superheater Tube
TP310 high-nickel alloy steel seamless tube, 175 mm OD, for superheater sections in utility boilers exposed to extreme oxidation. Offers superior high-temperature strength per ASME SA-213. 7304.59.20.55 applies for alloy steel, seamless, boiler-suitable, mid-range OD.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If considered hollow bar stock rather than tube
Semi-finished hollow products not meeting tube tolerances classify under Chapter 72 bars.
Not sure which classification is right?
The Tariff Assistant works through the GRI rules on your specific product to reach the right HTS code — and can price the duty on it in the same conversation.
Import Tips & Compliance
• Document minimum tensile strength (515 MPa); use proper cradle packaging to prevent OD distortion
• Pitfall: alloy content misdeclaration affecting AD/CVD
Related Products under HTS 7304.59.20.55
P92 Advanced Alloy Boiler Tube
SA-335 P92 9Cr-2W seamless tube, 150 mm OD, for USC boiler walls. Ultra-supercritical service. Classified 7304.59.20.55.
347TP Seamless Superheater Tube
347TP seamless alloy tube, 170 mm OD, ASME-certified for superheater pendants. Niobium-stabilized for weldability. 7304.59.20.55 classification.
P9 9Cr-1Mo Seamless Boiler Tube
SA-335 P9 tube, 125 mm OD, for economizer sections in recovery boilers. High creep rupture strength. Fits 7304.59.20.55 specs.
800HT Superheater Tube
Incoloy 800HT seamless tube, 185 mm OD, for high-temp superheaters. Aged for precipitation hardening. 7304.59.20.55 alloy steel.
TP347HFG Feedwater Tube
TP347HFG fine-grain seamless tube, 135 mm OD, for high-pressure feedwater heaters. Enhanced fatigue resistance. 7304.59.20.55.
SA-213 TP304 Seamless Alloy Steel Boiler Tube
This seamless tube made from TP304 austenitic stainless alloy steel has an outside diameter of 150 mm and is designed for high-pressure boiler applications. It meets ASME SA-213 specifications for use in superheaters and boilers, ensuring resistance to corrosion and high temperatures. Classified under 7304.59.20.55 due to its circular cross-section, alloy steel composition, and OD between 114.3 mm and 190.5 mm, suitable for boiler service.