Impact-Resistant Suction Hose for Rocky Seabed Dredging

• Customization: Available
• Material: Natural Rubber
• Capability: Dredging Hose
• Model NO.: SHSF
• Color: Black
• Usage: Industrial
• Model No.: Suction Hose
• Working Pressure: -0.9 Bar (Vacuum) to +10 Bar
• Hose Length: 500mm ~ 3000mm
• OEM: Accept
• Marine: Imo Msc.313(88), Solas II-1/11
• Oil & Gas: API 7K, Nace Mr0175
• Inner Tube: Oil-Resistant NBR
• Reinforcement: High-Tensile Steel Wire (2060MPa)
• Burst Pressure: ≥3× Max. Working Pressure
• Temperature Range: -30°c to +90°c
• Abrasion Resistance: ≤80mm³ Loss (DIN 53516)
• Flow Rate: 1-8 M/S (Optimal)
• Transport Package: Hoses Body to Be Wrapped with Plastic Membrane and
• Specification: DN150-DN250
• Trademark: CDSR
• Origin: Jiangsu, China
• HS Code: 4009220000
• Production Capacity: 50000PCS

Product Description

Suction Hoses

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.

Suction Hose with Sandwich Flange

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.

Specification

Applications

Marine & Offshore Engineering
Ship Engine Cooling Systems
Absorbs thermal expansion in seawater cooling pipelines between main engines and heat exchangers, preventing flange leakage under 110°C thermal cycles.
Dynamic Positioning Thruster Connections
*Compensates for vessel motion-induced pipeline stresses in azimuth thrusters (DN200, 2.5MPa, ±15° angular deflection capability).*
LNG Bunkering Arms
*Enables cryogenic fluid transfer (-196°C) with vacuum-insulated segment design (316L/Inconel 625 hybrid construction).*
Ballast Water Treatment Systems
*Resists ozone corrosion in treatment unit pipework (EPDM/PTFE lined, DN150-DN300).*

Features
(1) Built in with super wear-resistant steel cones as the working surface.
(2) Directional combination and connection.
(3) High stability and conveying capacity.

Technical Parameters

(Custom configurations available upon request.)

Standard	Requirement	Certification Mark
Marine	IMO MSC.313(88), SOLAS II-1/11	MED Wheel Mark
Oil & Gas	API 7K, NACE MR0175	PSL 3 Monogram
Industrial	EN 12115 (Chemical Resistance)	CE/PED 2014/68/EU
Safety	DNV-OS-F101 Annex D	ABS Type Approval
Total Length (L)	500-3000 mm (4-12 segments)	≤6000 mm (with anti-buckling rods)

Illustration

Dredging Hose

This detailed image illustrates the precise deployment locations of various specialized dredging hoses within a comprehensive marine operation. It maps the entire sediment transport route, starting with the Sinking Hose resting on the seabed for initial material intake, often near a cutter. Jet Water Hoses are strategically positioned to fluidize compacted sediments near the suction point. The critical transport path is formed by connected Section Hoses, comprising the main pipeline. Buoyancy is managed using Floats supporting sections requiring surface positioning. Tapered Floating Hoses facilitate smooth connections between pipes of differing diameters or at transition points. Where the seabed slopes significantly, Slope Adapted Hoses accommodate these contours without excessive stress. The majority of the surface pipeline often consists of Full Floating Hose sections, kept buoyant along their entire length. Approaching the discharge location, Discharge Hoses handle the final transport of the sediment-water mixture. Finally, Bow Blowing Hoses are specifically deployed for direct connection to barges or vessels, enabling precise sediment placement during discharge operations. The visualization clearly highlights how each hose type – from sinking intake to floating transport to specialized discharge – is optimally positioned to handle depth variations, seabed topography, buoyancy requirements, connection challenges, and the final placement of dredged material, ensuring efficient and effective sediment transfer throughout the system.

Drawings & Dimensions

Detailed CAD drawings and dimensional diagrams are available for download here or upon inquiry. Our engineering team can provide tailored designs to meet specific project requirements.

Test item

1. Material test
2. Adhesion test
3. Weight test
4. MBR test
5. Bending Stiffness test
6. Hydrostatic Pressure test
7. Vacuum test
8. Electrical test
9. Lifting Lug Acceptance test.
The number of hoses for each test item in accordance with GMPHOM 2009
Documentation, Tests and Markings in accordance with GMPHOM 2009

Packaging & Shipping

Company Profile

Jiangsu CDSR Technology Company Co., Ltd.

(CDSR)is a leading and also the biggestmanufacturer of marine hoses(GMPHOM 2009) and dredging hoses in China, specialized in themanufacture of dredging hose, oil hose and other rubber products:

1.Large-bore Discharge/Suction Hose
2. Floating Discharge Hose, Pipe Float
3. Marine Oil Hose(GMPHOM 2009)
4. Rubber Lining for Dredger Pump, Bottom Door Seal for Dredger
5. Various Rubber Fender for Dock and Tugboat.
6.Rubber Bearing for Bridge, Bridge Expansion Joint.

As the first company in China that developed Floating Discharge Hose, Armored Hose andMarine Oil Hose, CDSR adheres to the business philosophy of "establishing a business witintegrity and leading quality", and the spirit of "struggling for the first domestically and creating afirst-class company globally", commited to build itself into a world-class company specialize inhigh-quality rubber products.

Certifications

FAQ

1. What's the material of your hoses?
Material: NBR + High Tensile Steel Wire + Orange Spiraled Stripe.
 
2. What's the advantage of your hoses?
Built and tested in accordance with ISO28017:2009 specifications.
Third quality inspection.
Stable price and delivery time.
Best Customer Testimonials .
 
3. How long about the shortest delivery time?
Multiple production lines are synchronized to ensure delivery within the specified time.
 
4. What's your MOQ of your hoses?
MOQ: 1 Piece.
 
5. What's the lifespan of your hoses?
Lifespan: More than 10 years.
 
6. What's the warranty period of your products?
36 months. Excellent quality reassures you and me.
 
7. What's your standard of the hoses?
To be satisfy with ISO28017:2009.
 
8. What kind of certificate can you provide?
DNV.GL, BV, CCS, ABS, LR certificates are available.