Top SB-168, B 168 Stainless Steel Welded Pipe Supplier in China
Discover our premium welded pipes, manufactured from high-performance Alloy 600 (UNS N06600) plate. Engineered to meet the rigorous B 168 / SB-168 standard, they offer exceptional resistance to high-temperature oxidation and chloride-ion stress corrosion cracking, ensuring reliability in critical furnace and chemical applications.
SB-168, B 168 Welded Pipe - Detailed Specifications
| Specification Parameter | Details |
|---|---|
| International Grades | UNS: N06600, EN: 2.4816, Common Name: Alloy 600 |
| Pipe Manufacturing Standard | ASTM B517 (Welded) |
| Raw Material Specification | ASTM B168 / ASME SB-168 (for plate, sheet, and strip) |
| Outer Diameter (OD) | 1/2 NPS to 24" NPS (21.3mm to 610mm)" |
| Wall Thickness (WT) | Schedule 10S, 40S, 80S, XS |
| Length | Up to 12 meters (40 ft), or custom lengths |
| Welding Method | EFW (Electric Fusion Welded), ERW (Electric Resistance Welded) |
| Pipe Ends | Plain End (PE), Beveled End (BE) |
| Key Features | Excellent resistance to oxidation and carburization at high temperatures. High resistance to chloride-ion stress corrosion cracking (SCC). Good for cryogenic to elevated temperatures. |
| Testing & Inspection | Hydrostatic Test, NDT (Radiography, Ultrasonic), PMI (Positive Material Identification), Chemical Analysis, Mechanical Testing (Tensile, Bend) |
| Surface Finish | Annealed and Pickled Finish |
Understanding ASTM B168 / ASME SB-168
What It Is:
ASTM B168 / SB-168 is the definitive specification for the high-performance Alloy 600 plate used to fabricate our welded pipes.
It governs the specific Nickel-Chromium-Iron chemistry that provides Alloy 600’s signature resistance to high temperatures and corrosion.
It mandates the required heat treatment (annealing) and minimum mechanical properties to guarantee predictable, reliable performance under stress.
It is the foundational quality document for the raw material, ensuring every welded pipe begins with a fully certified, compliant plate.
Why It Is Your Core Focus:
Our strict adherence to this standard is our direct promise of delivering guaranteed reliability, safety, and performance in every pipe.
It ensures superior resistance to high-temperature oxidation and carburization, critical for longevity in furnace and heat-treating applications.
Compliance guarantees the material’s excellent performance in preventing chloride-ion stress corrosion cracking, a common failure mode in other alloys.
It provides the basis for the Material Test Certificate (MTC), offering you complete, verifiable proof that your pipes meet all project and regulatory specifications.
SB-443, B 443, 5599 Stainless Steel Material Properties
| Element | Content (%) |
|---|---|
| Nickel (Ni) | 72.0 min |
| Chromium (Cr) | 14.0 - 17.0 |
| Iron (Fe) | 6.0 - 10.0 |
| Carbon (C) | 0.15 max |
| Manganese (Mn) | 1.0 max |
| Sulfur (S) | 0.015 max |
| Silicon (Si) | 0.5 max |
| Copper (Cu) | 0.5 max |
| Property | Value (Minimum) |
|---|---|
| Tensile Strength | 80 ksi (550 MPa) |
| Yield Strength (0.2% Offset) | 35 ksi (240 MPa) |
| Elongation in 2 (50mm)" | 30% |
| Property | Value |
|---|---|
| Density | 8.47 g/cm³ (0.306 lb/in³) |
| Melting Point | 1413 °C (2575 °F) |
| Thermal Conductivity | 14.9 W/m·K at 21°C (68°F) |
| Coefficient of Thermal Expansion | 13.3 µm/m·°C (20-100°C) |
Versatile Applications of SB-168, B 168 Stainless Steel Welded Pipe
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Get Your Quote for SB-168, B 168 Stainless Steel Welded Pipe
Need reliable performance in high-temperature or corrosive environments? Our Alloy 600 welded pipes, compliant with B 168 / SB-168, deliver exceptional resistance to oxidation and stress corrosion cracking. Ensure the long-term integrity of your critical systems. Contact our specialists now for a detailed quotation.
