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China Stainless Steel Pipe Tube | Premium Durability
China Stainless Steel Pipe Tube | Premium Durability
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Product Detail Page: China Stainless Steel Pipe Tube | Premium Durability
Technical Specifications & Properties
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1. Dimensional Specifications
| Parameter | Range | Standards |
|---|---|---|
| Outer Diameter (OD) | 12.7mm – 1016mm (Customizable up to 2000mm) | ASTM A312, ASME SA312, EN 10216 |
| Wall Thickness | 0.4mm – 30mm (Seamless) / 0.3mm – 6mm (Welded) | Schedule 5S to XXH |
| Length | 1m – 12m (Standard) / Custom Cut Lengths | ISO 1127, ASME SA312 |
| Shape | Round, Square, Rectangular, Oval, Corrugated | ASTM A554, ASTM A269, BS 7838 |
Key Products:
- 422 stainless steel tubes and pipes: High-temperature resistance (up to 650°C), ideal for industrial boilers and heat exchangers.
- Corrugated stainless steel tube gas pipe: Flexible design for low-pressure gas systems (≤0.1 MPa), compliant with BS 7838.
2. Material Properties
| Grade | Hardness (HV) | Yield Strength (MPa) | Tensile Strength (MPa) | Elongation (%) |
|---|---|---|---|---|
| 422 Stainless Steel | 200 – 250 | ≥515 | ≥760 | ≥15 |
| 316L | 180 – 220 | ≥215 | ≥520 | ≥40 |
| 304/304L | 170 – 200 | ≥205 | ≥515 | ≥40 |
Source: ASTM A312, EN 10088-3.
3. Manufacturing Processes
| Process | Applications | Advantages |
|---|---|---|
| Seamless | High-pressure systems, boilers, heat exchangers | Superior corrosion resistance; no weld seams |
| Welded (ERW/EFW) | Structural, low-pressure fluid transport | Cost-effective; rapid production |
| Cold Rolled | Precision instruments, medical devices | Smooth surface; tight dimensional control |
| Corrugated | Gas pipelines, HVAC systems | Flexibility; vibration resistance |
Certifications: ISO 9001, PED, TUV, and NACE.
Detailed Technical Descriptions
1. Tensile & Bend Strength
422 stainless steel tubes and pipes excel in extreme environments with a tensile strength of ≥760 MPa and yield strength of ≥515 MPa. This grade is hardened through martensitic heat treatment, making it ideal for turbine blades and high-stress industrial components. The bend strength is enhanced via controlled annealing, ensuring structural integrity under cyclic loads.
2. Weight Calculation
Use the formula to estimate pipe weight per meter:
Weight (kg/m) = (OD – Wall Thickness) × Wall Thickness × 0.02466
Example: A 50mm OD corrugated stainless steel tube gas pipe with 1.5mm wall thickness weighs ≈1.81 kg/m.
3. Identification Marking
All products are laser-etched with:
- Grade (e.g., 422, 316L)
- Size (OD × Wall Thickness × Length)
- Certification (ASTM/EN Standard, Heat Number)
- Manufacturer Code
This ensures traceability and compliance with global standards.
4. Causes of Stainless Steel Corrosion
Despite high durability, corrosion may occur due to:
- Chloride Exposure: Prolonged contact with seawater or de-icing salts (common in coastal applications).
- Galvanic Corrosion: Avoid pairing with carbon steel or copper in humid environments.
- Thermal Stress: Excessive thermal cycling (＞650°C for 422 grade) may degrade protective oxide layers.
Custom Solutions & Applications
- 422 stainless steel tubes and pipes: Used in power plants, chemical reactors, and aerospace due to high-temperature stability.
- Corrugated stainless steel tube gas pipe: Ideal for residential/commercial gas lines, with flexibility reducing installation costs by 20%.
- China stainless steel pipe tube: Customized shapes (hexagonal, triangular) and finishes (mirror, brushed) for architectural and decorative projects.
Why Choose Our Stainless Steel Solutions?
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- Geographical Advantage: Based in Wuxi, China’s steel hub, we offer fast production and global logistics (72-hour dispatch).
- Certified Quality: Raw materials from top mills (e.g., Tsingshan, Acerinox) with 100% spectrographic testing.
- Customization: No MOQ for corrugated stainless steel tube gas pipe and 422 stainless steel tubes and pipes; tailored to your project’s needs.
- Cost Efficiency: Bulk pricing for industrial buyers; 15% lower than EU/US suppliers.
- Sustainability: 70% recycled content; ISO 14001-certified production.
