Online Flattener is main equipment of welded pipe unit, the property of Flattener is very important to ensure production of welded pipe with larger wall thickness going well.
This paper analyses the factors that affect the welded thick- wall steel tubes with middle or small diameters, and provides with corresponding solutions.
分析了影响中小直径厚壁电焊钢管质量的因素，并提出了相应的解决措施。
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Tube is welded pipe or cap in the threads in pipe fittings to cover the wall.