| 摘要 |
Pipe laying vessel coating and laying reel pipeline for subsea disposition, has a rotatably mounted reel for storage and for continuously unspooling of a pipeline and containing thereon pipe conditioning means located downstream of the reel in the direction of unspooling; the pipe conditioning means being adapted for straightening and for providing tension for the pipeline; the vessel including weight coating means adapted for continuously applying at least one weight coating layer to the pipeline as the pipeline moves continuously through the coating means, the coating means being located downstream of the pipe conditioning means in the direction of unspooling. - Both polymeric and concrete or other types of reaction setting coatings can be used to provide for pipeline in the usable range of 1/8 - 8 inches. the polymeric coatings can be polypropylene or polyurethanes together with various mineral aggregates. Concrete can be employed using a fast setting concrete. A preferred use is to provide for a first layer of fast curing concrete and then to immediately coat the concrete with one or more water impervious polymeric coating layers to protect the underlying concrete from sea water during the time period over which the curing process is completed.
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