How to distinguish the advantages and disadvantages of PVC steel hose
In most cases, without any detection tools and testing conditions, we can roughly identify the quality of PVC wire tubes according to the sense of vision, smell and touch.
1. to observe whether the lumen is regular and whether the wall thickness is uniform. The inner and outer edges of the PVC steel wire tube are round in shape, and the wall of the annular tube is well distributed. With the diameter of 89mm? 7mm thick PVC steel pipe as an example? The wall of the poor quality of the thick can reach 7.5mm? The thinnest only 5.5mm? Work under pressure? It is easy to pipe wall stress uneven burst or cause deformation of PVC steel pipe affect the normal use of?.
2. to observe whether there are bubbles or other naked objects in the wall of PVC steel tube, whether it is colorless and transparent. High quality PVC steel tube wall is glittering and translucent, without any impurities. But the color of the defective PVC steel pipe is yellow? May it be decomposed, aged or improperly stored due to improper handling in the production process?.
3, high quality PVC steel pipe, except for a little plastic smell, no other petrochemical products smell. And bad steel pipes have unpleasant pungent smell of diesel oil, especially in hot summer, people are unable to close.
4. High quality PVC steel pipe has smooth inside and outside pipe wall, good handle and low quality pipe.
5, measurement of wall thickness of PVC steel tube ends should be cut off?? selected as sample test tube in the middle part of the illegal manufacturers do? To prevent the pipe ends the actual wall thickness on both ends of the tube?.
6. Cut a few centimeters of steel wire at the ends of PVC steel wire. Repeatedly fold the steel wire and check the strength and toughness of the steel wire. The steel wire with poor quality will be broken when it is folded for one or two times, and the steel wire of high quality PVC steel wire needs special tools to cut off. The quality of the steel wire determines the quality of the whole tube. Because of the quality problem caused by the steel wire, the PVC steel tube is prone to non recoverable deformation.
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