1、 Using laser cutting，notch will be flawless and no stress concentration
2、 The drum is formed at one time without internal damage to the boar
3、 Mixer drum is auto joint-welded, welding by one side and two sides forming, with good appearance and strength;
4、 Concentricity inspection will guarantee the straightness and ensure the drum center stay in one plane with chassis;
5、 Drum flange, circular welding seam and frame accessories are all auto-welded.
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