Seamless tube of 17-4PH precipitation-hardening stainless alloy steel, circular cross-section, used for corrosion-resistant ball and roller bearings in marine or food processing equipment. Heat-treatable to high strength, it falls under tariff item 7304.59.00 as an 'other' seamless tube of alloy steel, not elsewhere specified.

2.25Cr-1Mo Boiler Feedwater Heater Tube

Seamless 2.25% chromium-1% molybdenum tubes for economizers and feedwater heaters in coal-fired boilers. Provides oxidation resistance up to 600°C, it falls under tariff item 7304.59.00 as an 'other' seamless tube of alloy steel, suitable for boiler applications.

AISI 440C Stainless Bearing Race Tube

Seamless circular tube from AISI 440C martensitic stainless alloy steel, through-hardenable for high-carbon bearing rings in harsh environments. Precision tolerances for raceway forming, it is classified under tariff item 7304.59.00 as an 'other' seamless tube of alloy steel.

Alloy 625 Condenser Repair Tube

Inconel Alloy 625 seamless tubes for condenser tube sheet repairs in nuclear and fossil plants. Exceptional corrosion resistance in chloride environments, it is classified under tariff item 7304.59.00 as an 'other' seamless tube of alloy steel.

ASME SA-335 P11 Seamless Superheater Tube

SA-335 P11 grade seamless alloy steel tubes are used in fossil fuel power plant superheaters for steam generation at extreme temperatures. The 1.25% chromium-molybdenum composition ensures creep resistance in boiler environments, falling under tariff item 7304.59.00 as an 'other' seamless tube of alloy steel.

Bearing-Quality 100Cr6 Seamless Steel Tube

Seamless circular tube of 100Cr6 (AISI 52100 equivalent) alloy steel, optimized for roller bearing rings with excellent through-hardening properties and minimal inclusions. Used by bearing manufacturers for high-load applications, it falls under tariff item 7304.59.00 as an 'other' seamless tube of alloy steel.

E52100 Cold-Drawn Seamless Bearing Stock Tube

Cold-drawn seamless E52100 (electrode vacuum remelted 52100) alloy steel tube with mirror finish surface, circular cross-section for precision miniature ball bearings. Provides superior cleanliness for high-speed applications, it is classified under tariff item 7304.59.00 as an 'other' seamless tube of alloy steel.

Hastelloy C-276 Seamless Heat Exchanger Tube

Hastelloy C-276 seamless tubes excel in corrosive heat exchanger service for chemical processing and refining condensers. The nickel-chromium-molybdenum alloy provides unmatched resistance in harsh environments, classified under tariff item 7304.59.00 as an 'other' seamless tube of alloy steel.

Incoloy 800 Heat Exchanger Tube

Incoloy 800 seamless tubes are precision-engineered for heat exchangers in petrochemical plants, offering exceptional resistance to oxidation and carburization. These circular cross-section pipes withstand high temperatures, falling under tariff item 7304.59.00 as an 'other' seamless tube of alloy steel.

M50 Alloy Steel Seamless Bearing Tube

Seamless tube from M50 high-speed alloy steel (AMS 6491), designed for aerospace ball bearing races requiring extreme hardness and fatigue resistance. Circular cross-section with precise ID/OD for finish machining, it falls under tariff item 7304.59.00 as an 'other' seamless tube of alloy steel.

P5 Alloy Steel Refinery Furnace Tube

SA-335 P5 (5Cr-0.5Mo) seamless tubes for hydrogen reformers and cracking furnaces. Seamless design essential for high-purity hydrogen service, it is classified under tariff item 7304.59.00 as an 'other' seamless tube of alloy steel.

P91 Alloy Steel Tube for Refining Furnace

Grade P91 (9Cr-1Mo-V) seamless tubes are engineered for cracking furnaces in oil refineries, enduring severe thermal cycling and carburizing atmospheres. Their circular seamless construction supports high-pressure hydrocarbon processing, falling under tariff item 7304.59.00 as an 'other' seamless tube of alloy steel.

SA-213 TP347H Superheater Tube

TP347H stabilized stainless seamless tubes for superheaters in utility boilers, resisting intergranular corrosion after welding. Heavy wall construction handles 600°C+ steam conditions, classified under tariff item 7304.59.00 as an 'other' seamless tube of alloy steel.

SAE 52100 Seamless Alloy Steel Tube

High-precision seamless tube made from SAE 52100 alloy steel, featuring a circular cross-section and tight tolerances ideal for machining into inner or outer races of ball bearings. Its uniform microstructure and hardness make it suitable for high-load applications, classified under tariff item 7304.59.00 as an 'other' seamless tube of alloy steel.

Seamless Alloy Steel Boiler Tube SA-213 TP304

This seamless tube made from TP304 stainless alloy steel is designed specifically for high-pressure boilers and superheaters, meeting ASME SA-213 specifications. It features a circular cross-section and is cold-drawn for precision, falling under tariff item 7304.59.00 as an 'other' seamless tube of alloy steel.