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Polishing Surface 304L 316L Stainless Seamless Steel Pipe

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hydraulic stainless tube


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Polishing Surface 304L 316L Stainless Seamless Steel Pipe

Overview

Polished surface 304L and 316L stainless steel seamless pipes are renowned for their excellent durability, corrosion resistance, and appealing aesthetics. These pipes are essential in industries where both the material's mechanical properties and surface finish are crucial.

Key Properties

304L Stainless Steel Seamless Pipe

  • Composition: A low-carbon variant of 304 stainless steel, with 18-20% Chromium and 8-12% Nickel.

  • Mechanical Properties: Offers superior corrosion resistance, excellent weldability, and high formability.

  • Corrosion Resistance: Effective in various environments, including both oxidizing and reducing conditions.

  • Applications: Commonly used in chemical processing equipment, food and beverage industry, and architectural applications requiring a polished finish.

316L Stainless Steel Seamless Pipe

  • Composition: A low-carbon variant of 316 stainless steel, containing 16-18% Chromium, 10-14% Nickel, and 2-3% Molybdenum.

  • Mechanical Properties: Provides enhanced corrosion resistance, particularly against chlorides and other industrial chemicals.

  • Corrosion Resistance: Excels in resisting pitting and crevice corrosion in chloride-rich environments.

  • Applications: Extensively used in marine environments, pharmaceutical and chemical industries, and medical devices needing a polished finish.

Surface Finish

  • Polishing Grades: Available in different grades such as No. 4, No. 6, and No. 8 (mirror finish), tailored to application needs.

  • Benefits of Polishing: Enhances aesthetic appeal, facilitates easy cleaning, and improves corrosion resistance by minimizing surface roughness where contaminants can settle.

Manufacturing and Heat Treatment

  • Seamless Process: Made by extruding the steel to form a seamless tube, ensuring uniform strength and consistency.

  • Heat Treatment: Both 304L and 316L pipes often undergo solution annealing to boost their corrosion resistance and mechanical properties.

Dimensions and Tolerances

  • Standard Sizes: Available in a variety of diameters and wall thicknesses to meet diverse industrial standards.

  • Tolerances: Manufactured to precise tolerances for consistency in wall thickness and diameter, which is critical for high-precision applications.

Applications

Chemical Processing

  • Widely used in chemical processing due to their superior corrosion resistance.

Food and Beverage Industry

  • Ideal for applications demanding high hygiene and cleanliness, such as food and beverage production.

Pharmaceuticals

  • Employed in equipment and piping systems where contamination control is vital.

Marine Environments

  • Preferred for use in seawater and other corrosive conditions due to their excellent corrosion resistance.

Testing and Quality Control

  • Nondestructive Testing: Methods like ultrasonic testing are used to detect internal defects.

  • Mechanical Testing: Includes tensile tests and hardness tests to verify mechanical properties.

  • Corrosion Testing: Ensures material resistance to various corrosive environments.

Marking and Certification

  • Marking: Each pipe is marked with the grade, size, heat number, and other relevant information for traceability.

  • Certification: Comes with documents detailing the chemical composition, mechanical properties, and test results, ensuring compliance with industry standards.

Summary

Polished surface 304L and 316L stainless seamless steel pipes combine superior mechanical properties, corrosion resistance, and aesthetic appeal. These features make them ideal for demanding environments such as chemical processing, food and beverage production, pharmaceuticals, and marine applications. The seamless manufacturing process and polished surface finish further enhance their performance and versatility in various industrial applications.

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Zhangjiagang Chewit International Co.,ltd, is the professional supplier in china for high precision seamless steel pipe of carbon, alloy.

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