ČSN EN ISO 28017 (635455)

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Hoses and hose assemblies

Die Annotation des Normtextes ČSN EN ISO 28017 (635455):

This document specifies requirements for two types, seven classes and three grades of wire- or textile-reinforced dredging hoses with nominal sizes ranging from 100 to 1 300. Such hoses are suitable for the delivery or suction of seawater or freshwater mixed with silt, sand, coral and small stones with a specific gravity in the range from 1,0 to 2,3 at ambient temperature ranging from -10 °C to +40 °C or for low-temperature hoses (designated -LT) ranging from -20 °C to +40 °C.

This document covers two types of hose, as follows:

• - type 1: floating type, for delivery only, which includes flotation material to give the hose buoyancy;
• - type 2: submarine type for delivery and suction