SINOHAI北京西诺海科技有限公司
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Subsea & Offshore

Buoyancy & pipeline equipment

Buoyancy · SDU · PLET · ILT

Buoyancy modules, pipe floats and subsea pipeline assemblies for marine installation and project supply. We bring related equipment into one procurement scope, with each component specified for its duty.

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Yellow flotation collars supporting a temporary dredging pipeline on the water
Pipeline flotation collars in service · surface application shownImage credit ↗

Supply scope

  • Modular subsea buoyancy systems
  • Removable pipeline support & tie-in floats
  • Subsea distribution units (SDU) & manifolds
  • Pipeline end terminations (PLET) & in-line tees (ILT)
  • Support frames, lifting and installation interfaces

Selection parameters

  1. 01

    Water depth, seawater conditions, service duration and required net buoyancy

  2. 02

    Pipe diameter, coating thickness, retaining arrangement and module envelope

  3. 03

    Pipeline material, design pressure, temperature and service medium

  4. 04

    Distribution circuits, valves, controls and mating interfaces

  5. 05

    Frame dimensions, foundation, lifting loads, fabrication tolerances and testing scope

Manufacturer, final specification, availability and delivery terms are confirmed in the quotation.

Documentation to request

Agree the required documents and inspection scope in your enquiry.

  • Project data sheets, general arrangements and interface drawings
  • Buoyancy calculations and agreed structural verification
  • Material certificates, serial-number register and traceability records
  • Inspection and test plans; pressure, strength and tightness records as applicable
  • As-built dossier; operation, maintenance and preservation instructions
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Umbilicals, flying leads and wet-mate connectors for subsea power, hydraulic services and control. We coordinate sourcing around the interfaces and operating conditions of your project.

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