How To Identify The PVC Steel Hose In The PVC Hose
PVC hose is no stranger to us. Now let's introduce how to identify the advantages and disadvantages of the PVC steel wire hose in the PVC hose.
In most cases, without any testing tools and testing conditions, we can roughly identify the quality of PVC steel tube according to the sense of vision, smell and touch.
1. to observe the rules of the lumen and whether the wall thickness is uniform. The inner and outer edges of the PVC steel wire with good quality are standard circular, and the annular pipe wall is evenly distributed. Taking the PVC steel tube with inner diameter of 89mm thickness 7mm as the example, the thickest wall of the poor quality can reach 7.5mm, and the thinnest part is only 5.5mm. Under greater pressure, it is easy to burst or deform the PVC steel pipe due to the uneven stress of the tube wall, which affects normal operation.
2. observe whether there are bubbles or other visible objects in the wall of PVC steel tube, whether it is colorless and transparent. The wall of the high quality PVC steel pipe is crystal clear without any impurities. The secondary PVC steel tube is yellowing. It may be caused by decomposition, aging or improper storage in the production process due to improper handling.
3. High quality PVC steel tube has no odor of any other petrochemical products except a little plastic smell. But the poor steel wire has the smell of unpleasant smell, especially in the hot summer days.
4, high quality PVC steel tube inside and outside tube wall are smooth, feel good, and low quality tube is rough.
5. When measuring the wall thickness, the two ends of the PVC steel pipe should be cut off. The middle tube should be selected as a sample to prevent some illegal manufacturers from making articles on both ends of the pipe. The actual wall is thick and thin at both ends of the tube.
6. Intercept a few centimeters of steel wire at both ends of the PVC steel pipe, fold the steel wire repeatedly, and check the strength and toughness of the steel wire. Steel wires with poor quality will break when they fold one or two, and the steel wire of high quality PVC steel pipe needs special tools to cut off. The quality of the steel wire determines the quality of the whole pipe, and the PVC steel wire tube easily causes an unstable deformation due to the quality problems caused by the steel wire.