Reasons for uneven thickness of 3pe anticorrosive steel pipe
When we purchase 3PE anti-corrosion steel pipes, we must pay attention to many aspects, the most important thing is to see whether the thickness of 3PE anti-corrosion steel pipes is uniform, because the uneven thickness can easily cause many failures during use, and it will also cause the steel pipe to bend. So we must observe carefully.
The industry standard SY / T0413-2002 does not stipulate the uniformity of thickness. It only specifies the low thickness value of the coating, but it is required that the low thickness value of the coating cannot be lower than the thickness value of the low point, not the multiple test points average value. In the coating process of 3PE anti-corrosion steel pipe coating, if the thickness of the coating is uneven, it will inevitably cause waste of material. This is because when the thickness of the coating at the thin place is kept to a low standard, the thickness of the thick part will be larger than the coating Standard thickness.
In addition, the coating thickness of the 3PE anticorrosive steel pipe can easily cause the coating thickness to fall short of the standard in the case of uneven coating. The reasons for the uneven thickness in the production process are mainly the unevenness of the material found in several mouths and the bending of the steel pipe.
The effective method to control the uneven coating of 3PE anti-corrosion pipelines is to adjust several extrusion dies to make the thickness of the anti-corrosion coating at several places as uniform as possible.