毛坯件控制号码：是产品进行毛坯加工和渗碳处理时所用到的号码系统。
Green CONTROL NUMBER: Numerical system, which is used in the scheduling of product to be green machined and carburized.
就阀门密封面等离子弧堆焊的技术关键问题：毛坯加工、工艺选择及质量控制等。
The key problems of technique for plasma hardfacing for sealing face of valve such as blank making. Process selecting and quality controlling.
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.
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