internal pipe coating 管线内涂层
external pipe coating 管子外涂层
pipe coating process 管道涂敷法
Concrete pipe coating machines 混凝土管涂覆机
bituminous pipe coating 管子沥青涂料
Coating Steel Pipe 镀锌钢管
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。
It focuses on the manufacture process and application properties to analyze the advantage and disadvantage of coating plastic pipe and lining plastic pipe.
着重从制造工艺和使用性能方面分析了涂塑钢管和衬塑钢管各自的优、缺点。
A gap or void in the coating of a pipe or in paint on a metal surface.
在管子覆盖层或金属表面涂漆层上有漏涂点或裂缝。
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