With joint protections of coating and cathode, the buried steel pipeline will still be corroded and penetraded on some pipe surfaces.

埋地钢质管道在防腐层、阴极防腐的共同保护下，钢管的某些区域仍会被腐蚀穿孔。

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Founded in 1904 after Clarence Spicer patented the encased universal joint, which enabled the modern-day automobile, Wood saw similar engineering prowess buried inside the company now.

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