The quality of the tube is an important factor in the decision quality seamless steel pipe. In order to ensure the normal perforation process and access to high-quality seamless steel pipe, tube geometry must be low magnification and the surface state and put forward strict requirements.
Tube diameter is too large, or through the large oval, make the piercing bite when conditions deteriorate, but also because of excessive compression tube diameter and to promote the production within the fold.
Mainly refers to the internal organization of shrinkage and center porosity, the accumulation of non-metallic inclusions and gas content, etc. Such stringent requirements, with the use of seamless steel tubes and carbon steel pipe varies.
The most important is the quality of the surface of the tube, because of any defect in the tube to the finished product will be seamless, but also defective parts often leads to stress concentration, defects by plastic deformation will deepen, lengthen.
To sum up in order to produce high-quality seamless steel pipe products, the good quality tube is a crucial step.
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