In most cases, there are no testing tools and conditions. We can roughly identify the quality of PVC steel pipe According to the sense of sight, smell and touch. 1. To observe whether the pipe cavity rules, wall thickness is uniform. Good quality PVC steel wire pipe cavity and the outer edge of the standard circular annular pipe wall distribution evenly.
With 89mm wall thickness of 7mm PVC steel pipe For example, the thickness of the pipe wall of the thickest can reach 7.5mm thinnest place only for 5.5mm under the pressure of the large pipe wall is easily caused by the bursting of PVC steel pipe or deformation effect of normal use. 2. To observe whether there are bubbles or other visible objects in the PVC steel pipe wall are colorless and transparent. High-quality PVC steel pipe wall crystal clear without any impurities.
and defective PVC steel pipe color yellowing may be in the production process due to improper treatment of decomposition, aging or long-term improper storage caused. 3, high-quality PVC steel wire tube, except a little plastic odor without any other petrochemical products odor.
Poor steel pipes have an unpleasant smell of diesel, especially in hot summers where people can't get close.
4, High-quality PVC steel pipe Outside the wall are smooth feel good and low quality pipe is more coarse.
5, the measurement of wall thickness should be cut off PVC steel pipe at both ends of the selection of the middle tube as a sample test to prevent some illegal manufacturers in the pipe at both ends of the actual wall thickness. 6, the PVC steel pipe at both ends of the interception of several centimeters of steel wire repeatedly folded steel wire to detect the strength and toughness. The quality of the steel wire folded one or two will break and high-quality PVC steel wire pipe needs special tools to be truncated. The quality of the steel wire determines the quality of the whole pipe because of the quality of the steel wire caused by the PVC steel wire tube is very easy to occur irreversible deformation.