Durable Stainless Steel Pipe Tube | 304 Square Wholesale Deals

Durable Stainless Steel Pipe Tube | 304 Square Wholesale Deals

​Product Overview

Our ​stainless steel pipe tube is engineered for superior durability and corrosion resistance, making it ideal for structural, industrial, and decorative applications. Crafted from premium AISI 304 stainless steel, this square tubing combines high strength with aesthetic versatility. Available in ​stainless steel tube pipe sizes tailored to meet diverse project requirements, our products are backed by ASTM and ISO certifications for guaranteed quality.

​Technical Specifications

​Mechanical Properties

1. ​Tensile Strength:

   • ​304 Stainless Steel: Minimum 485 MPa (70,300 psi).
   • ​Cold-Worked Tubes: Up to 860 MPa (124,700 psi) for enhanced load-bearing capacity.
   • This ensures resistance to deformation under high-stress conditions, such as structural frameworks or fluid transport systems.

2. ​Bending Strength:

   • Achieves 1.5× tensile strength (≈727 MPa) due to austenitic microstructure.
   • Ideal for applications requiring tight-radius bends, such as handrails or machinery components.

​Identification & Marking Methods

• ​Laser Etching: Permanent grade markings (e.g., "304," "316L") for traceability.
• ​Color Coding: Optional PVC sleeves or painted ends to differentiate sizes and grades.
• ​Certification Tags: Mill Test Reports (MTR) with chemical composition and mechanical data.

​Weight Calculation Formula

For ​stainless steel tube pipe sizes, weight per meter is calculated as:
$\text{Weight (kg/m)}=(OD-WT)\times WT\times 0.02491$
Where:

• $OD$ = Outer Diameter (mm)
• $WT$ = Wall Thickness (mm)
  Example: A 50×50 mm square tube with 3 mm thickness weighs ≈3.72 kg/m.

​Why Stainless Steel Rusts?

Despite its corrosion-resistant reputation, stainless steel can rust under specific conditions:

1. ​Chloride Exposure: Chlorine ions in seawater or cleaning agents penetrate the chromium oxide layer, causing pitting corrosion.
2. ​Mechanical Damage: Scratches or abrasions expose the iron-rich substrate to oxygen, initiating oxidation.
3. ​Low Oxygen Environments: In stagnant water or enclosed spaces, the passive film cannot self-repair.
4. ​Galvanic Corrosion: Contact with carbon steel or copper accelerates rusting in humid conditions.

Our 304-grade tubes mitigate these risks with 18–20% chromium and 8–12% nickel, ensuring robust passivation and self-healing properties.

​Why Choose Our Stainless Steel?

1. ​Certified Quality: Compliant with ASTM, JIS, and DIN standards for guaranteed performance.
2. ​Custom Sizes: Tailor-made ​stainless steel tube pipe sizes to fit unique project needs.
3. ​Bulk Savings: ​Wholesale stainless steel pipe tube deals with volume discounts and fast global shipping.
4. ​Durability: High resistance to extreme temperatures (-200°C to 800°C) and chemical exposure.
5. ​Low Maintenance: Easy cleaning with non-porous surfaces, reducing long-term costs.