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EUROPEAN STANDARD PN20 DN75 8 4mm thickness HDPE Pipe

NPS 'Nominal Pipe Size' and DN 'Diametre Nominal'

Pipes are identified by "nominal" or "trade" names that are loosely related to the actual dimensions. For instance, a 2 inch galvanized steel pipe has an inside diameter of about 2 1/8 inches and an outside diameter of about 2 5/8 inches. In plumbing pipe size is referred to as nominal pipe size NPS, or "Nominal Pipe Size". The metric [price]

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