TP304 Stainless Steel Hexagonal Pipe Tube Hot Rolled Bright Polished Hairline

Product Specification

TP304 Stainless Steel Hexagonal Pipe Tube Hot Rolled Bright Polished Hairline Finishing SS Pipe

TP304 Stainless Steel Hexagonal Pipe - Comprehensive Technical Specification

1. Product Introduction of TP304 Stainless Steel Hexagonal Pipe

TP304 stainless steel hexagonal pipe is a versatile six-sided hollow structural component manufactured from austenitic chromium-nickel stainless steel. As one of the most widely used stainless steel grades, it offers excellent corrosion resistance, good formability, and outstanding weldability. The hexagonal shape provides enhanced structural stability compared to round pipes, making it ideal for both mechanical and architectural applications where torsional strength is required.

2. Dimensional Specifications of TP304 Stainless Steel Hexagonal Pipe

• Hexagonal Dimensions:

  • Across flats (A/F): 5mm to 100mm

  • Wall thickness: 0.5mm to 8mm

  • Standard lengths: 1m to 6m (custom lengths available up to 12m)

• Tolerance Standards:

  • Outside dimension tolerance: ±0.1mm to ±0.5mm (depending on size)

  • Wall thickness tolerance: ±10%

  • Straightness: ≤1mm per meter

3. Compliance Standards of TP304 Stainless Steel Hexagonal Pipe

• International Standards:

  • ASTM A312/A213 (Seamless and welded pipes)

  • ASTM A554 (Welded decorative tubing)

  • EN 10296-2 (European standard for mechanical tubing)

  • JIS G3463 (Japanese standard)

• Chinese Standards:

  • GB/T 12771 (Welded stainless steel pipes)

  • GB/T 14976 (Seamless stainless steel pipes)

4. Chemical Composition (%) of TP304 Stainless Steel Hexagonal Pipe

Note: Low carbon variant (304L) available with C≤0.03% for improved weldability

5. Mechanical Properties of TP304 Stainless Steel Hexagonal Pipe

6. Production Process of TP304 Stainless Steel Hexagonal Pipe

1. Material Selection: Premium TP304 stainless steel billets

2. Forming Methods:

   • Seamless: Hot extrusion or cold drawing process

   • Welded: Roll forming with automatic TIG welding

3. Heat Treatment:

   • Solution annealing at 1010-1120°C

   • Quenching for optimal corrosion resistance

4. Finishing Processes:

   • Pickling and passivation

   • Mechanical polishing (up to #800 mirror finish)

   • Electropolishing (for medical applications)

7. Product Characteristics of TP304 Stainless Steel Hexagonal Pipe

• Corrosion Resistance: Excellent resistance to oxidizing acids and organic compounds

• Hygienic Properties: Smooth surface prevents bacterial growth (ideal for food processing)

• Temperature Resistance: Continuous service from -196°C to 800°C

• Aesthetic Appeal: Polished finishes available for decorative applications

• Non-Magnetic: In annealed condition (may become slightly magnetic when cold worked)

8. Packaging Specifications of TP304 Stainless Steel Hexagonal Pipe

• Standard Packaging:

  • Plastic end caps for protection

  • Waterproof plastic wrapping

  • Bundled with steel straps (2-3 straps per bundle)

  • Weight per bundle: ≤2000kg

• Special Packaging:

  • Individual pipe wrapping

  • Wooden crates for export

  • VCI (Volatile Corrosion Inhibitor) packaging for long-term storage

9. Industrial Applications of TP304 Stainless Steel Hexagonal Pipe

• Food & Beverage Industry:

  • Brewery equipment

  • Dairy processing pipelines

  • Food conveyor systems

• Chemical Processing:

  • Acid storage systems

  • Heat exchangers

  • Chemical transportation

• Architectural Applications:

  • Decorative handrails

  • Structural frameworks

  • Modern facade systems

• Automotive Industry:

  • Exhaust systems

  • Fuel lines

  • Trim components

• Medical Equipment:

  • Surgical instrument frames

  • Medical gas delivery systems

  • Hospital furniture

10. Quality Assurance of TP304 Stainless Steel Hexagonal Pipe

• Testing Standards:

  • Hydrostatic testing: 1.5 times working pressure

  • Eddy current testing for defects

  • PMI (Positive Material Identification)

  • Intergranular corrosion test (ASTM A262)

• Certifications Available:

  • ISO 9001:2015

  • PED 2014/68/EU

  • ASME BPE for hygienic applications

11. Special Variants of TP304 Stainless Steel Hexagonal Pipe

• TP304L: Low carbon version for welding applications

• TP304H: High carbon version for high temperature service

• Polished Variants:

  • Mill finish (No. 1)

  • Brushed finish (No. 4)

  • Mirror polish (BA/No. 8)

12. Technical Support of TP304 Stainless Steel Hexagonal Pipe

• Custom cutting and machining services available

• Welding procedure specifications (WPS) provided

• Material test certificates (MTC) with 3.1/3.2 certification

This comprehensive specification sheet demonstrates why TP304 stainless steel hexagonal pipe remains the material of choice for engineers across multiple industries, combining mechanical performance with superior corrosion resistance in an economical package.