4 PTFE-COATED EXPANSION JOINTS These DN 65 PTFE coated Expansion Joints are customized for a chemical plant in the United States. PTFE coating is one way to protect the bellows against corrosion due to aggressive mediums. Belman provides several solutions for protection against corrosion, which you can read about on pages 429-433 in the Belman Expansion Joint Catalogue. Chemical plant United States 2020-0120-03001
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