Pipe Laying Floats

Pipeline Installation and Pipeline Deployment Buoys

The pipeline laying floats can be strapped to the pipeline to reduce the tension and weight as pipeline deployment installation buoyancy during the launch of a pipeline. The pipe deployment floats modules also can be used to provide buoyancy when pulling the pipeline underwater.

We manufacture various tie-in pipeline foam buoys to provide the best float solution for the different pipe laying buoyancy requirements. We make the shallow water and deep water pipe deployment floaters down to 300m of depth. If necessary, higher depths can be reached.

To meet the different customer’s requirements, we are making the pipeline foam buoys in two different buoyancy modules. One-piece float and modular floats. Our pipeline foam buoys are fabricated with the different density closed cell foam cell depending on the depth requirement, covered by polyethylene skin/polyurethane elastomer outer skin. The skin also can be reinforced by nylon filament upon request. Each buoyancy modules have banding grooves to secure the buoys to the pipeline. The end fitting can be designed for the easy handling operation. The floats can be fixed on pipes with different types of straps or wire rope according to necessity.

Step 1: Make Steel Structures

Step 2: Make Foam Core

Step 3: Polyurethane Coating

Step 4: Install End Fitting

Tie-in Type Pipe Laying Floats

Structure Design: Polyurethane foam + Polyurea elastomer skin

DOOWIN pipe-laying foam float buoys are designed depending on the pipeline’s diameter, working water depth, and project requirements. We can make the below-type pipeline installation buoys and other buoyancy modules upon the client’s request. The bottoms have special curve designs to work with different diameter pipelines.

The buoyancy and weight are based on the working depth. Because we use different surface foam materials and syntactic foam for different water depths, the weight and buoyancy of the same-size floats are different. The drawings and picture references are for illustration purposes only.

Pipe Laying Floats Features

Polyethylene Foam Core

High-performance, unskinable closed cell foam core, not absorb water
Polyurethane Coating

Extremely durable outer polyurethane elastomer skin
Nylon Mesh Option

Reinforced nylon mesh ensures polyurethane elastomer protective coating has higher tear strength

Different Water Depth

Various foam densities available adapt to different water depths
Fit Multiple Different Pipe

The customized bottom curve can fit multiple different pipe sizes.
Customized Design

Easily and cost effectively customized to suit specific project requirements

Pipe Laying Floats Structure and Specification

Model	Width (mm)	Height (mm)	Length (mm)
COSS 2500	800	900	2500
COSS 3000	1000	900	3000
COSS 1100	1100	1100	1100
COSS 1200	1100	1100	1200
COSS 1400	1100	1100	1400
COSS 2400	1100	1100	2400
COSS 3600	1100	1100	3600
COSS 4800	1100	1100	4800

Cylindrical Shape | Oval Shape | Square Shape A | Square Shape B

Rotomolded Pipe Deployment Floats Module

Structure Design: Polyurethane foam + PE molded hard shell

Pipe deployment floats, the so-called “tie-in”, is used to support the weight of pipelines during deep-sea underwater pipeline laying. Mooring floats are typically used within a water depth range of 0 to 200 meters, but deeper depths can be achieved if necessary. Modules can be combined together to obtain float with different buoyancy. According to operational requirements, different types of straps can be used to secure the float to the pipeline: steel strips, steel and textile straps, and special plastic material straps.

We also can make the deep water pipe deployument floats with our syntactic foam.

Customized size available.

Model	Width (mm)	Height (mm)	Length (mm)	Net Buoyancy at 0-50m	Net Buoyancy at 50-100m	Net Buoyancy at 100-200m
PDF1115-115	1100	1150	1150	1075 kg	1025 kg	950 kg
PDF1115-135	1100	1150	1350	1325 kg	1250 kg	1150 kg
PDF1115-195	1100	1150	1950	1875 kg	1775 kg	1625 kg
PDF1115-215	1100	1150	2150	2000 kg	1900 kg	1750 kg
PDF1115-245	1100	1150	2450	2300 kg	2175 kg	2000 kg
PDF1113-115	1100	1300	1150	1250 kg	1175 kg	1100 kg
PDF1113-135	1100	1300	1350	1475 kg	1400 kg	1275 kg
PDF1113-195	1100	1300	1950	2125 kg	2000 kg	1850 kg
PDF1113-215	1100	1300	2150	2300 kg	2175 kg	2000 kg
PDF1113-245	1100	1300	2450	2650 kg	2500 kg	2325 kg