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    The importance of mandrel in pipe fitting production

    The importance of mandrel in pipe fitting production
    elbow machine
    Mandrel is very important in pipe fitting production.
    For example, when the elbow machine produces elbow, the diameter of the ball segment of the bending manhole is small, the inside of the circular arc may produce wavy folds when the pipe is bent, and may not play the role of preventing the outside of the circular arc from becoming flat;If the diameter is too large or the outside diameter of the ball joint is not smooth enough, the pipe wall will be pulled and the outside of the pipe arc may bulge or even break.