TP304H Stainless Steel Pipe Seamless Tube High Carbon SS Pipe OD10 - 406mm With

1. Core Chemical Composition (Parameters)

2. Mechanical & Physical Performance

2.1 Mechanical Properties (As Delivered)

2.2 Key Physical Properties

2.3 Special Performance Advantages

• High-Temperature Creep Resistance: The increased carbon content prevents grain boundary sliding at temperatures up to 870°C (1600°F), critical for long-term service in boilers or furnaces.
• Corrosion Resistance: Maintains TP304’s excellent resistance to atmospheric corrosion, mild acids (e.g., acetic acid), and organic compounds—suitable for both thermal and chemical environments.
• Weldability: Compatible with standard austenitic welding processes (TIG, MIG, SMAW) using matching filler metals (e.g., ER308H, E308H); post-weld heat treatment (PWHT) is not required for most applications.

3. Product Specifications (Seamless Tube)

4. Certifications & Standards

4.1 Main Manufacturing & Material Standards

• ASTM A312/A312M: Standard for seamless, welded, and heavily cold-worked austenitic stainless steel pipes for general service.
• ASME SA312: Boiler and pressure vessel code (BPVC) standard (equivalent to ASTM A312) for high-pressure, high-temperature applications.
• EN 10216-5: European standard for seamless stainless steel tubes for pressure purposes (austenitic grades).

4.2 Quality Certificate: EN 10204-3.1

• Compliance with specified chemical composition and mechanical properties.
• Traceability of raw materials (from melt to finished product).
• Non-destructive testing (NDT) results (e.g., ultrasonic testing for internal defects, eddy current testing for surface flaws).
• Manufacturing process validation (e.g., annealing temperature, seamless extrusion parameters).

5. Equivalent Grades

6. Typical Applications

• Power Generation: Boiler tubes, superheater tubes, and steam pipelines (resists creep under high pressure/temperature).
• Petrochemical & Refining: Heat exchanger tubes, reactor internals, and process pipelines (handles organic solvents and high-temperature hydrocarbons).
• Chemical Processing: Pipes for transporting mild acids (e.g., sulfuric acid < 50%), alkalis, and chemical intermediates.
• Oil & Gas: Downhole tubes (for high-temperature wells) and surface pipelines (resists atmospheric and soil corrosion).
• Food & Beverage: Sanitary pipes for high-temperature processing (e.g., pasteurization, sterilization) – when polished finish is specified.
• Aerospace & Automotive: Exhaust system components and heat shields (for high-temperature engine environments).

7. Export Packaging

1. Inner Protection:
   • Each pipe is wrapped in PE film (polyethylene) to prevent scratches, moisture, and oxidation.
   • For polished or high-precision pipes, additional kraft paper or PVC sleeves are used to avoid surface damage.
2. Outer Packaging (Options):
   • Wooden Crates/Boxes: For small-diameter pipes (OD < 50 mm) or custom lengths; crates are heat-treated (ISPM 15 compliant) to meet international phytosanitary requirements (avoids pest infestation).
   • Steel Bundles: For standard-length pipes (6m/12m); pipes are bundled with steel straps (50–100 pipes per bundle) and secured on wooden pallets (ISPM 15) for stability.
   • Bulk Containers: For large-diameter pipes (OD > 200 mm); loaded into 20ft/40ft shipping containers with foam padding between pipes to prevent collision damage.
3. Marking & Labeling:
   • Each pipe/bundle is labeled with: Product grade (TP304H), OD/WT/length, heat number, certificate number (EN 10204-3.1), manufacturer name, and destination port.
   • Shipping documents (commercial invoice, packing list, certificate of origin, EN 10204-3.1 certificate) are enclosed in a waterproof envelope attached to the packaging.
4. Special Requirements:
   • Anti-rust oil coating: Optional for long-term storage (prevents oxidation in humid environments).
   • Waterproof covers: Used for open-top containers or sea shipping to protect against rain/salt spray.