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Quality Control of Pretank Stainless Steel Storage Tanks

Views: 0     Author: Site Editor     Publish Time: 2025-01-13      Origin: Site

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1.Material Inspection

  • High-quality stainless steel materials (such as 304 or 316L) are used to ensure corrosion resistance and strength meet the required standards.

  • The thickness, surface finish, and chemical composition of the materials are inspected to ensure compliance with standard specifications.


2.Manufacturing Process Quality Control

  • Welding Quality: Automatic or manual welding is employed, and welds undergo visual inspection, ultrasonic testing, or X-ray testing to ensure no cracks, pores, or welding defects.

  • Dimensional Accuracy: Precision measuring tools are used to inspect the tank's dimensions, roundness, and flatness, ensuring they meet design requirements.


3.Internal and External Surface Treatment

  • Internal: The internal surface of the tank is polished (generally Ra ≤ 0.8μm) to ensure safety for storing food or chemicals.

  • External: Depending on customer requirements, the external surface is sandblasted, polished, or brushed to enhance appearance quality and corrosion resistance.


4.Functional Testing

  • Hydraulic Testing: Tanks are filled with water or liquid and pressurized to specified levels to ensure no leaks, deformations, or structural abnormalities.

  • Penetration Testing: Welds and joints undergo penetration tests to confirm there are no cracks or minor leaks.

  • X-ray Testing: Key welding areas are subjected to X-ray inspection to ensure internal weld integrity and defect-free structure.


5.Final Inspection Before Delivery

  • Accessory Check: Valves, flanges, nozzles, and other accessories are checked for proper installation and compliance with functional requirements.

  • Cleaning and Sterilization: The internal surface of the tank is cleaned and sterilized to meet food-grade or other industry standards.

  • Labeling and Packaging: Product labels are affixed, and suitable packaging is provided to prevent damage during transportation.


6.Inspection Reports
Comprehensive inspection reports are provided, including material inspection results, weld testing records, and pressure test reports, ensuring transparency and reliability in product delivery.


With a rigorous quality control process and meticulous attention to detail, Pretank is dedicated to delivering high-quality and reliable stainless steel storage tanks to its customers. We firmly believe that every tank embodies the trust and expectations of our clients, driving us to pursue excellence and provide superior storage solutions for various industries.Contact us now!


Provide stainless steel tanks solutions for liquid processing of STORAGE,FERMENTING, HEATING,CHILLING, BLENDING, DISTILLING, MASHING AND BOILING.

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Add: A-floor, 16,R&D HUB 2,Science and education Town, No.801,Changwu Middle Road,Wujin District, Changzhou, Jiangsu. P.C. 213000
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