Unisite Group Ltd.

Steel Bottom Door,Steel Dredge Bottom Doors,Steel Bottom Doors Design


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Steel dredge bottom doors

Basic Info

Model No.: USA-244

Certificate: BV CCS

Dimension: As Per Drawing/order

Type: Heavy

Tolerance: High Accuracy(ISO2768, ISO5817, ISO13920)

Inspection: Material, Construction, Dimension, Welding Seam, N

Standard: AISI, ASTM, BS, DIN, GB, JIS

Grade: Q345D, DH36 Or Other Materials

Application: Cutter Suction Dredger Parts

Steel Bottom Door: Steel Dredge Bottom Doors

Additional Info

Packaging: bulk package and bulk vessel transportation

Brand: UniSite

Transportation: Ocean,Land

Place of Origin: china mainland(zhejiang)

Certificate: CCS/ISO/BV

Product Description

Bottom Door means having self-propelled bunkering functional and non-self-propelled Dredger carrying ship or dredged material (commonly known as mud Barge) Disposing dredged material dedicated facilities. Bottom door are relative terms, it is a dedicated loading bay dredged material (commonly known as the hopper) dump device.Steel dredge bottom doors


dredge bottom door
High accuracy
BV certificate
Full range to suit all needs

Used for TSHD dredger

The specifications of our dredge bottom door

A. General

The bottom doors are operated by rods actuated by hydraulic cylinders, generally mounted above the hopper. The cylinders can also be placed in the hopper or in void spaces. The design of the doors is such that surface smoothness ensures fast discharge and, if repairs are needed, they are relatively easy to remove from the ship. Pre-dumping doors and self-suction channel doors can also be installed in the hopper bottom.

B. Construction and procedure

The construction is to be built according to the drawing with rules of good workmanship.

There are two distinct variants of bottom doors; single and double. Both are of hinged, closed box-type construction, complete with necessary lifting eyes. They are selected according to vessel configuration, discharge speed required and size of hopper.

C. Materials

All steel used to be blasted and shop primed both sides. Using Q345D, DH36

All materials proposed will be selected to comply with the latest Health and Safety Rules.

Paint systems for hull protection will be of the highest quality (Hempel, Inter, Sigma, Jotun)

About the quality control

UniSite have a perfect managing system and quality control system which from initial work.
ISO9001-2008/CCS; BV manufacturer capability qualification.
Quality, health, safety and environment (QHSE)
Production guidelines
In-house safety training to our staff
Checking all the production equipment periodically
Preventing pollution, accidents and health hazards, auditing

Our service
Besides above the general specifications, we can also supply some specific buoys and other similar steel structure as clients' requirements.

Package and shipping
bulk package and bulk vessel transportation
container package and container transportation

Our Equipments



Photos of our Steel dredge bottom doors

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Looking for ideal Steel Bottom Door Manufacturer & supplier ? We have a wide selection at great prices to help you get creative. All the Steel Dredge Bottom Doors are quality guaranteed. We are China Origin Factory of Steel Bottom Doors Design. If you have any question, please feel free to contact us.

Product Categories : Steel Structures > Bottom Door

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