Ss321 Stainless Steel Seamless Tube Uns S32100 High Temperature Resistant for Boiler/Heat Exchanger

• Customization: Available
• Type: Seamless
• Technique: Cold Rolled
• Material: Stainless Steel
• Surface Treatment: Polished
• Usage: Pipeline Transport, Hydraulic/Automobile Pipe, Oil/Gas Drilling, Food/Beverage/Dairy Products, Machinery Industry, Chemical Industry
• Section Shape: Round
• Transport Package: Export Packing
• Specification: 0.2-100mm
• Trademark: MESCO STEEL
• Origin: China
• HS Code: 72106900
• Production Capacity: 2000 Tons Per Month

Product Description

Stainless Steel Pipe SS321
 

OD	6-200mm
Thickness	0.6-6.0mm
Grade	SS321
Max length	12m
Lead time	7-35 days
Processing service	Bending/ flaring/welding/punching/polishing/pickling/cutting
Surface Treatment	Bright Annealed (Ra≤0.8μm), Pickled & Passivated

ADVANTAGES

• Superior High-Temperature Performance: Continuous operating temperature ≤870ºC, short-term (≤100h) resistance to 920ºC. Tensile strength at 600ºC is 20-30% higher than 304, effectively resisting creep deformation in high-temperature environments.
• Anti-Intergranular Corrosion: Titanium content strictly controlled at 5×C%-0.7% (ASTM standard), preventing chromium carbide precipitation during welding or high-temperature service, avoiding corrosion failures.
• Precision Manufacturing: Cold-drawn forming + bright annealing process ensures dimensional tolerance ≤±0.05mm, inner wall roughness Ra≤0.8μm, improving heat exchange efficiency by 10% compared to ordinary tubes.
• Comprehensive Quality Inspection: 100% Eddy Current Testing (ECT) for inner/outer wall defects, 2.5MPa hydrostatic test for sealing. Provide EN 10204 3.1/B or 3.2 test certificates.
• Customization & Fast Delivery: Support non-standard specifications (OD 6-168mm, WT 1.0-6.0mm, length up to 12m). Lead time 25-35 days, 10-15 days faster than industry average.

 

Application Scenarios (Industry-Specific)

 

1. Power & Energy Industry (Top Demand)

Boiler superheater/reheater tubes, waste heat recovery boiler heat exchange tubes, high-temperature steam transmission pipes. Suitable for thermal power, nuclear power, and biomass power projects. Customers include Siemens, Kepco, and Power Construction Corporation of China overseas projects.

2. Petrochemical & Chemical Industry

Ethylene cracking furnace tubes, high-temperature heat exchanger tubes, synthetic ammonia equipment pipes. Ideal for medium-corrosion (weak acid) and high-temperature (500-800ºC) environments. Trusted by Dow Chemical, AkzoNobel, and Middle East oil refineries.

3. Aerospace & Military Industry

Aircraft engine high-temperature exhaust pipes, spacecraft thermal protection system pipes, military high-temperature hydraulic pipes. Meets aerospace-grade requirements with dimensional tolerance ≤±0.03mm and vacuum smelting process (impurity ≤0.01%).

4. Other Industries

Automotive exhaust systems (high-end sports cars/trucks), glass furnace heat exchange tubes, medical high-temperature sterilization equipment pipes.

Product Packing and Loading

We help our customers to Insert the small tube into the large tube, by this way can load as much as possible pipes into container to save the space and save freight.


 MESCO STEEL