Unisite Group Ltd.

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Bottom Door

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Steel marine dredge bottom doors
  • Brand: UniSite
  • Packaging: bulk package and bulk vessel transportation
  • Min. Order: 1 Piece/Pieces
  • Certificate: CCS/ISO/BV
  • Model No.: USA-247

The bottom door dedicated to the trailing suction hopper dredger The form and amount of Bottom door is generally based on the size of its hopper and the hopper loads the specific circumstances of the particle size viscosity specific gravity and waters the ship construction and design Technology In order to perform comprehensive service and...

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Marine dredger bottom doors
  • Brand: UniSite
  • Packaging: bulk package and bulk vessel transportation
  • Min. Order: 1 Piece/Pieces
  • Certificate: CCS/ISO/BV
  • Model No.: USA-246

Bottom door are generally installed in the bottom of the hull of a vessel can be opened and closed through human or mechanical electrical hydraulic Different types of Bottom door its control opening and closing time speed the degree of opening of the open dredged material by ability has its own characteristics Main particulars MAIN PARTICULARS...

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Dredge bottom steel doors
  • Brand: UniSite
  • Packaging: bulk package and bulk vessel transportation
  • Min. Order: 1 Piece/Pieces
  • Certificate: CCS/ISO/BV
  • Model No.: USA-245

At present marine dredging is often used in transit facilities On the beach side there is a special cover of the mud pool with a hopper dredger to the pool bottom open door into the mud and then dredger suction on the beach or go ashore This facility can improve dredging efficiency and reduce water pollution Welding All welding will be performed...

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Steel dredge bottom doors
  • Brand: UniSite
  • Packaging: bulk package and bulk vessel transportation
  • Min. Order: 1 Piece/Pieces
  • Certificate: CCS/ISO/BV
  • Model No.: USA-244

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 Specifications dredge bottom...

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China Bottom Door Suppliers

Responsible for mud.Bottom dumping hopper with the movable Bottom Door. Dedicated to the trailing suction hopper Dredger

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.

Photo of our Bottom Door:

Bottom Door


The form and amount of Bottom door is generally based on the size of its hopper and the hopper loads the specific circumstances of the particle size, viscosity, specific gravity and waters the ship construction and design.

Bottom door are generally installed in the bottom of the hull of a vessel can be opened and closed through human or mechanical (electrical, hydraulic). Different types of Bottom door its control, opening and closing time (speed), the degree of opening of the open, dredged material by ability has its own characteristics.

A. General

High accuracy, fully welded, painted construction can be used for trailing Suction Hopper Dredger.

Load pipe plays an important role, transport the dredge mixture to the hopper, then transmit through the load box pipe, to other position.

Dredger Structure pipe with high quality including Loading Box, Jet Pipe, Suction Pipe, spud, riser pipe, flange pipes etc.

B. Construction and procedure

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

With wear plate welded in inlet tube to ensure the long service life

According to the different function, normally load pipe has 1 inlet tube or 2 inlet tubes

On main pipe part, there will be several exit holes.

C. Materials

All fabricated steelwork used in the construction of the load box pipes will be to manufacturing standard of normal or classification society.

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)

D. Welding

All welding will be performed in accordance with drawing and order and UniSite experience and all welding will be continuous and full penetration.

E. Workmanship

The workmanship have good marine practice. Care are taken to ensure fair lines, smooth surfaces and neat welding.