Reliable supplier in China for SB625, B 625 stainless steel seamless tubes
Discover premium SB625, B 625 stainless steel seamless tubes designed for durability and top performance. Perfect for demanding industrial applications, these high-quality tubes ensure reliability, strength, and corrosion resistance you can count on. Ideal for projects requiring precision and long-lasting materials.

SB625, B 625 Stainless Steel Seamless Tube - Detailed Specifications
Parameter | Value | Description |
---|---|---|
Material Grade | SB625, B 625 | High-quality stainless steel grade for durability. |
Dimensions | Customizable (OD 6mm - 200mm) | Outer diameter ranges available for diverse needs. |
Temperature Resistance | Up to 1200°F (650°C) | Withstands extreme heat in high-stress environments. |
Design | Seamless | Smooth, polished surface without welded joints. |
Applications | Furnaces, Chemical Plants | Ideal for use in industrial and high-temperature applications. |
Understanding SB625, B 625
What It Is:
These two standards work in tandem to guarantee a product that is both materially superior and hygienically sound.
- SB625: This is the master specification for the N08904 (904L) plate itself, dictating its unique chemical composition—including high levels of nickel, molybdenum, and copper.
- B 625: This is the definitive standard for sanitary tubing. It governs the manufacturing process, surface finish (Ra), cleanliness, and testing required to produce a hygienic, contamination-free final product.
- A Certified Combination: We start with fully certified SB625 material to create a sanitary tube that meets or exceeds all B 625 requirements.
Why It Is Your Core Focus:
Our strict adherence to both standards is our promise of delivering a robust, reliable, and pure solution for your critical systems.
- It guarantees superior performance against moderately to highly corrosive media where 316L would be inadequate, especially in the presence of sulfuric acid.
- It ensures an ultra-smooth, crevice-free internal surface that minimizes bio-burden and allows for effective, repeatable Clean-in-Place (CIP) cycles.
- This dual certification simplifies your validation process with fully traceable materials and comprehensive MTCs, essential for regulated industries.
SB625, B 625 Stainless Steel Material Properties
Element | Percentage | Description |
---|---|---|
Nickel (Ni) | 58.0 - 63.0% | Ensures corrosion and oxidation resistance. |
Chromium (Cr) | 20.0 - 23.0% | Adds strength and enhances high-temperature resistance. |
Molybdenum (Mo) | 8.0 - 10.0% | Improves resistance to pitting and crevice corrosion. |
Iron (Fe) | Balance | Provides structural integrity and durability. |
Carbon (C) | Max 0.10% | Minimizes carbide precipitation in welding. |
Manganese (Mn) | Max 0.50% | Enhances toughness and wear resistance. |
Silicon (Si) | Max 0.50% | Improves oxidation resistance. |
Property | Value | Description |
---|---|---|
Tensile Strength | Min 690 MPa (100 ksi) | Measures the maximum load-carrying capacity before failure. |
Yield Strength | Min 310 MPa (45 ksi) | Indicates material stiffness under stress. |
Elongation | Min 40% | Shows ductility and capacity to stretch under tensile force. |
Hardness (Brinell) | Max 95 HBW | Reflects resistance to indentation or deformation. |
Density | 8.51 g/cm³ | Denotes compactness and weight per unit volume. |
Elastic Modulus | 200 GPa | Determines the ability to deform elastically under stress. |
Versatile Applications of SB625, B 625 Stainless Steel Seamless Tube
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Chemical Processing: Heat exchangers and reactors in chemical plants.
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Oil and Gas: Piping systems for offshore and refining operations.
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Power Generation: Tubes for boilers and superheaters in power plants.
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Aerospace: Components for high-temperature jet and rocket engines.
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Pharmaceuticals: Sterile piping systems for drug manufacturing.
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Marine Industry: Corrosion-resistant tubing for ship structures.

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Get a Quote for SB625, B 625 Stainless Steel Seamless Tube
When reliability meets extreme conditions, our SB625, B 625 Stainless Steel Seamless Tube delivers unmatched performance. Resistant to corrosion and designed for seamless durability, it’s the trusted choice for high-temperature and harsh environments. Contact our experts for a quote today!