The Suction Hose are mainly applied on the drag arm of the Trailing Suction Hopper Dredger(TSHD) or the cutter ladder of theCutter Suction Dredger(CSD). Compared with discharge hoses, the suction hoses can withstand negative pressure in addition topositive pressure, and can continuously work under dynamic bending conditions. They are essential rubber hoses for dredgers.
The main features of Suction Hose are good wear resistance, weather resistance, and flexibility.
Normally the maximum working pressure of Suction Hoses is up to -0.1 MPa, and the test pressure is -0.08 MPa. Suction Hoseswith special or customized requirements, such as those which can withstand pressures ranging from -0.1 MPa to 0.5 MPa, arealso available. Suction Hoses are suitable for ambient temperatures ranging from -20℃ to 50℃, and suitable for conveyingmixtures of water(or seawater), silt, mud, clay and sand, ranging in specific gravity from 1.0 g/cm³ to 2.0 g/cm³.
The CDSR suction hoses comply with the requirements of International standard ISO28017-2018 and the standard of theChemical Industry Ministry of China HG/T2490-2011, and can also meet higher and reasonable product performancerequirements from customers.
According to diferent working conditions, there are generaly four types of Suction Hoses: Suction Hose with Steel Nipple Suction Hose with Sandwich Flange, Armored Suction Hose and Segment Steel Cone Hose.
Segment Steel Cone Hose
The CDSR Segment Steel Cone Hose is usually applied in the cutter ladder of Cutter Suction Dredger(CSD), suitable forconveying sharp, hard materials like coral, gravel, coarse sand, weathered rock, etc.