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The meanings of factory prefabrication of petrochemical pipes were expounded.

阐述了石油化工管道工厂化预制的意义.

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Our piping prefabrication workshop covers a total area of 1000 m 2.

我们的管道预制加工厂拥有一千平方米的面积.

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Piping erection work include: prefabrication placing aligning welding and bolting.

管道安装工作包括: 预制加工、安置、对准、焊接和连接.

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We shall complete the man hour requirements for the prefabrication ( site erection ) of this drawing.

咱们将制订这张图纸现场制作 ( 现场安装 ) 所需的工时条件.

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Authors mainly introduce quality control of allotype caisson in prefabrication, float transport and installation process.

主要介绍异型沉箱在预制 、 浮运、安装中的质量控制.

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Then the prestress of the piles was adjusted value in prefabrication, and good effect was achieved.

提出适当调整预应力, 能够有效地解决预应力水冲桩桩身裂缝的问题.

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