Precision Stainless Steel Square Tube Featuring Polishing, Annealing, and Pickling for Superior Surface Quality.

Engineered for industrial excellence, our precision stainless steel square tubes combine rigorous polishing, annealing, and pickling processes to deliver unmatched surface integrity. These structural components offer superior corrosion resistance and dimensional accuracy, making them ideal for demanding applications where material performance is non-negotiable. Manufactured under strict quality protocols, each tube guarantees consistent mechanical properties and aesthetic uniformity across production batches.

Core Technical Specifications:

• Material Science: Austenitic stainless steel grades (304/316) with 18-20% chromium content
• Surface Quality: Ra ≤ 0.4μm after multi-stage mechanical polishing
• Thermal Processing: Controlled annealing at 1010-1120°C followed by rapid quenching
• Chemical Treatment: Acid pickling with HNO3/HF solution to remove scale
• Structural Integrity: Tensile strength 515-620 MPa, yield strength ≥205 MPa

Performance Advantages:

Industrial Implementation Benefits:

• Architectural applications: Reduced maintenance costs in structural frameworks exposed to weather elements
• Food processing equipment: Meets sanitary surface requirements with non-porous finish
• Chemical transport systems: Extended service life in corrosive material handling

Optimize your project specifications with tubing solutions that undergo 27 quality checkpoints during manufacturing. Our integrated polishing-annealing-pickling sequence ensures metallurgical properties meet international standards for critical applications. Contact our engineering team for material certifications and custom dimensional requirements.