Regarding A105III for flanges, what does the “III” stand for? I would appreciate some guidance from those who know more

2017-06-09View Original

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Regarding A105III for flanges, what does the “III” stand for? I would appreciate guidance from those who know more about this. Also, how can one determine whether a flange is forged or cast?

Reply #22017-06-09

This post was last edited by GanDanXiangZao on 2017-6-9 at 19:49. That is the forging grade; in the following situations, grade III or higher is required； 1. Chromium-molybdenum steel forgings with a nominal pressure of 600 CLASS or higher (PN100). 2. Chromium-molybdenum steel forgings with a nominal pressure of 300 CLASS or higher (PN16). 3. Ferritic steel forgings with a nominal pressure of 300 CLASS or higher (PN16) and operating temperatures of -20°C or lower. Forgings of the same specification weigh more than castings

Reply #32017-06-16

The appearance of cast and forged products differs

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Regarding A105III for flanges, what does the “III” stand for? I would appreciate some guidance from those who know more

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