Анализ дефектов в виде внутренних складок в горячекатаных бесшовных стальных трубах
Description: The built-in hot-rolled seamless steel pipe refers to the spiral, semi-spiral or irregularly distributed zigzag folds on the inner surface of the steel pipe. The inner folds mainly exist at the head of the steel pipe, or they are distributed regularly or irregularly. . Part of the hot-rolled seamless steel pipes can be used […]
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