Product Description
ASTM A249 Welded Tube Stainless Steel Pipe Product Description
1. Specification Details
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Available in a diverse range, typically spanning from 6.35mm to 610mm. We can also accommodate requests for custom diameters to meet unique project needs.
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Common lengths are 3m, 6m, 9m, and 12m. For projects with specific length requirements, we offer cut - to - order services to ensure precise fit.
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Ranging from 0.5mm to 20mm, the wall thickness is carefully designed to suit various applications, whether it's for high - pressure systems or those requiring enhanced corrosion resistance.
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2. Material Characteristics
Our ASTM A249 welded tube stainless steel pipes are crafted from high - grade stainless steel alloys. The primary alloying elements include chromium (Cr), nickel (Ni), and in some cases, molybdenum (Mo). Chromium, typically present in amounts between 16% - 26%, forms a passive oxide layer on the surface, providing excellent corrosion resistance. Nickel, with a content usually ranging from 8% - 22%, enhances the material's toughness and stability at high temperatures. Molybdenum, when added (usually 2% - 5%), further improves resistance to pitting and crevice corrosion, especially in harsh environments.
3. Mechanical Properties
- Tensile Strength: These pipes exhibit a minimum tensile strength of 515 MPa. This high tensile strength enables the pipes to withstand substantial mechanical stress without deformation or failure, making them suitable for applications where high - pressure and heavy - load conditions are expected.
- Yield Strength: With a minimum yield strength of 205 MPa, our ASTM A249 pipes offer remarkable resistance to permanent deformation under applied loads. This property ensures the integrity of the pipes during installation and long - term use.
- Elongation: The elongation percentage is typically not less than 35%. This high elongation value indicates good ductility, allowing the pipes to be bent, formed, or welded without cracking, which is crucial for various fabrication processes.
4. Manufacturing Process
The manufacturing process of our ASTM A249 welded tube stainless steel pipes is highly precise. First, high - quality stainless steel coils are carefully selected. These coils are then formed into the desired pipe shape through a continuous roll - forming process. The seam is welded using advanced welding techniques, such as TIG (Tungsten Inert Gas) or MIG (Metal Inert Gas) welding, to ensure a strong and leak - tight joint. After welding, the pipes undergo a series of post - welding treatments, including annealing to relieve internal stress and improve the material's mechanical properties. Finally, each pipe is thoroughly inspected using non - destructive testing methods, such as ultrasonic testing and radiographic testing, to guarantee compliance with ASTM A249 standards.
5. Application Range
- Heat Exchangers: Due to their excellent heat transfer properties and corrosion resistance, ASTM A249 welded tube stainless steel pipes are widely used in heat exchanger applications. They can efficiently transfer heat between different fluids while resisting the corrosive effects of the fluids, ensuring long - term and reliable operation.
- Condensers: In power plants and industrial cooling systems, condensers play a vital role. Our stainless steel pipes are ideal for condenser applications as they can withstand the high - temperature and high - humidity conditions, preventing scale formation and corrosion, and thus maintaining high heat transfer efficiency.
- Chemical Processing Industry: In chemical plants, where pipes are exposed to a wide range of corrosive chemicals, ASTM A249 pipes are the preferred choice. Their resistance to acids, alkalis, and other corrosive substances makes them suitable for transporting process fluids, ensuring the safety and integrity of the chemical production process.
- Food and Beverage Industry: The hygienic and corrosion - resistant properties of these pipes make them suitable for the food and beverage industry. They can be used for transporting various food and beverage products, ensuring product purity and preventing contamination.
6. Quality Assurance
We are committed to providing top - quality ASTM A249 welded tube stainless steel pipes. All our products are manufactured in strict accordance with ASTM A249 standards. Each batch of pipes undergoes comprehensive quality control checks, including chemical composition analysis, mechanical property testing, and non - destructive inspection. We also maintain a quality management system certified to ISO 9001, ensuring consistent quality in every product we deliver. Our team of experienced professionals monitors every step of the production process, from raw material procurement to final product inspection, to guarantee that our customers receive the highest - quality stainless steel pipes.
Detailed Photos
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