1.The poor quality 3 Layer PE Steel Pipe is easy to fold up. It is due to manufacturer in pursuit of high efficiency, the pressure is large, produce handle, folding products after bending cracks, the strength of steel reduce.
2.Inferior 3 PE steel pipe appearance often pitted phenomenon. The surface is easy to produce scars.
3.The surface of the fake and inferior materials are easy to cause cracks. The reason is that the billets are adobe and there are many holes in the adobe. During the cooling process, the adobe is cracked due to the thermal stress, and there are cracks after rolling.
4.Low quality Anti-corrosion Steel Pipe has no metallic luster, it is light red or similar to the color of pig iron. The temperature of fake and inferior material rolling is not standard, their steel temperature is visually measured.
5.Its 3PE anti-corrosion steel pipe are thin and low, which often appear to be dissatisfied.
6.The cross section of poor quality 3LPE steel pipe is elliptical, steel material contains many impurities, the density of steel is small.