How Can The PVC Steel Hose Be Identified?
How can the PVC steel hose be identified?
In most cases, without any testing tools and testing conditions, we can roughly identify the quality of PVC wire tubes according to vision, smell, touch and other senses.
1. observe whether the lumen is regular and whether the wall thickness is uniform. The inner and outer edges of the PVC steel tube with good quality are in a standard circular shape, and the wall of the annular tube is evenly 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. observe whether there is any bubbles or other visible substance on the wall of the PVC steel tube, whether it is colorless or transparent. High quality PVC steel tube, tube wall glittering and translucent, without any impurities. And the color of the defective PVC steel tube is yellow, which may be caused by improper treatment, aging or improper storage during the production process.
3 、 high quality PVC steel pipe, except for a little plastic smell, no smell of other petrochemical products. And the bad steel pipes have a pungent odor of diesel oil, especially in the hot summer, people are unable to close.
4 、 high quality PVC steel pipe, both inside and outside the pipe wall are smooth, feel good, while the low quality pipe is rough.
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. Cutting several centimeters of steel wire at both ends of PVC steel wire. Repeated folding of steel wire detects the strength and toughness of steel wire. A steel wire of poor quality can be broken down at one or two folds, while the steel wire of high quality PVC steel wire needs special tools to cut it off. The quality of the steel wire determines the quality of the whole tube. Because of the quality problems caused by the steel wire, the PVC steel tube is prone to non recoverable deformation.
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