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.
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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.
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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
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SA-335 P92 9Cr-2W seamless tube, 150 mm OD, for USC boiler walls. Ultra-supercritical service. Classified 7304.59.20.55.
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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
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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.