NG pipeline needs to be covered with anti-corrosion layer and plus cathode protect, to delay its corrosion.

敷设的天然气管道表面除做防腐层外还需加入阴极保护，以延缓腐蚀速度。

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NG pipeline needs to be covered with anti-corrosion layer and plus cathode protect, to delay its corrosion.

敷设的天然气管道表面除做防腐层外还需加入阴极保护，以延缓腐蚀速度。

youdao