The special requirement for the welding of X80 pipeline steel was described also.

还简述了X80管线钢对焊接的特殊要求。

youdao

The two special cement coatings are applicable to sewage pipeline internal corrosion for ductile iron pipe, improve the ability to resist the erosion of acid components in sewage.

这两种特殊水泥涂层均适用于污水管道用球墨铸铁管的内防腐，提高抵抗污水中酸碱成分的侵蚀能力。

youdao

For the natural gas transmission pipeline, the special steel pipe that can resist hydrogen cracking should be developed.

对于天然气输送管道，需研制抗氢致裂纹的专用管线钢管；

youdao

The first stage involved placing a special concrete blanket across the depressurised pipeline.

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They are continuing to develop the pipeline, with a special focus on helping entities such low-income residential housing and community centers, and public entities.

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Only the Chinese have managed to wangle a special concession and also to build a pipeline.

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