This paper introduces the developing progress of metallic pressure sealing ring, including selecting material, drawing special forging process, intenerating process and drawing machining process.

介绍了具有优良使用性能，可替代进口产品的金属自密封环的研制，包括选材、制定特殊锻造工艺、制定机械加工工艺规程和软化处理等。

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I plant mainly produces all kinds of high, medium, low flange, ring, forging, gear and special flange.

我厂主要生产各种高、中、低压法兰，环件、锻件、齿轮及异型法兰。

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The technical keys of manufacturing large high - low pressure combined rotors are selecting optimum chemical compositions, refining , forging and special heat treatment.

制造大型高低压复合转子的技术难点是：选择最佳的化学成分精炼、合理的锻造工艺和采用特殊的热处理方法。

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The Ninth Circuit has a reputation for forging its own path but today had to be special: It was reversed three times by the Supreme Court, with a partial defeat in another case.

FORBES: The Ninth Circuit is Thrice Stuffed Today