At present, the domestic production lines for concrete weight coating of submarine pipeline are basically imported.

目前，国内管道混凝土配重涂敷厂的生产装备基本为国外进口。

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Features: Concrete weight coating is used to provide pipe stability on the sea bed as well as superior mechanical protection.

涂层特性：混凝土配重使管道能够稳定地保持在海床上，同时为管道提供有效的机械保护。

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In the respect of loss weight, with the increased corrosivity in solution, concrete samples lose more weight, with HPC and NHPC samples mainly peeling cement paste, and WHPC samples peeling coating.

质量变化方面，各试件质量损失随着溶液腐蚀性的增强而增大，HPC和NHPC主要是水泥浆的剥落，WHPC是涂层的剥落。

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