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SO Flange
SDFL
Chemical industry: Used for piping connections to transport media such as chemicals with low corrosivity, solvents, process water, low-pressure steam (<100°C), and compressed air.
Pharmaceutical and food industries: Due to their relatively smooth inner walls (easy to clean), they are often used in process water pipes, batching pipes, CIP (Clean-in-Place) systems, etc., where the cleanliness requirements are not extremely strict. Materials usually include stainless steel (such as 304, 316L).
Water treatment industry: Very common in the water inlet, product water, and concentrated water pipelines of water treatment equipment such as reverse osmosis (RO) and ultrafiltration (UF). The pressure class PN10/16 is the standard configuration for such applications.
Good economy: The manufacturing cost and installation cost are relatively low.
Convenient installation: Pipe alignment and welding are easier than with WN flanges.
Strong versatility: DN50 PN10 is an extremely common specification, making it easy to purchase and replace.
