When installing the pipeline with flange, the gasket must be placed between the two butt flanges.
安装带法兰的管路时，必须在两个对接法兰的密封间放置垫片。
The present invention is the production process of steel flange blank, especially of flat flange, butt welded flange and prestressed pipe pile end plate flange.
一种钢法兰毛坯加工工艺，尤其是一种平法兰、对焊法兰、预应力管桩端板法兰毛坯加工工艺。
The present invention is the production process of steel flange blank, especially of flat flange, butt welded flange and prestressed pipe pile end plate flange.
一种钢法兰毛坯加工工艺，尤其是一种平法兰、对焊法兰、预应力管桩端板法兰毛坯加工工艺。
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