... .ISO9001 and ISO14001 3.Material: NR SBR synthesis rubber 4.12 years OEM experience Dredging Hose:dredging hose 1. ... dredging hose is used to connect dredging ships to delivery mud, it is easy to install,, and flexible, safe, anti wearied, winding resistancedredging hose specifications: Inner DiameterWorking Pressure ... (DIN), Japanese Standard (JIS) and process non-standard products. Dredging Hose