What Is BA Sanitary Stainless Steel Pipe?
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BA Sanitary Stainless Steel Pipes are typically made from 304 and 316L materials, and they adhere to quality standards such as ASTM A249, A269, A270, and 3A. These pipes require high dimensional accuracy, a smooth wall finish, and need to be degreased and deoiled.
Characteristics of Stainless Steel Clean Pipes:
High Cleanliness: The inner surface finish is highly polished, typically with an Ra value of less than 0.45μm. This finish prevents bacterial growth and minimizes the adherence of impurities, ensuring the purity of the conveyed medium.
High Dimensional Accuracy: Dimensional tolerances such as diameter and wall thickness are tightly controlled. For example:
Diameter tolerance: ±0.02mm (0.1%)
Length tolerance: ±0.05mm
Straightness: No more than 0.1mm/m
Concentricity tolerance: ±0.01mm
These precise specifications ensure the pipes meet various installation and usage requirements.
Strong Corrosion Resistance: Due to the high content of alloy elements like chromium and nickel, these pipes exhibit excellent corrosion resistance in different environments, including resistance to acids, alkalis, and other corrosive media. This results in a long service life.
Key Manufacturing Processes:
Bright Annealing: The stainless steel is heated to dissolve almost all carbides and then rapidly cooled to room temperature to obtain a carbon-supersaturated solid solution. This heat treatment process ensures uniform material structure and composition, eliminates work hardening, and restores the inherent corrosion resistance of the stainless steel.
Straightening Treatment: To ensure the straightness of the stainless steel pipe, the welded pipes undergo shaping and sizing. This process improves dimensional accuracy and ensures the pipe ends are smooth and rounded.
GNEE supplies stainless steel annealing pipes with quality assurance processes, including weld flaw detection to prevent false or leaking welds. Additional tests, such as water pressure and air pressure tests, are performed to meet customized requirements.
