In most cases, there is no detection tools and testing conditions, we can roughly identify the quality PVC steel wire hose according sight, smell, touch and other senses.
1.Observe whether the rules lumen wall thickness is uniform. Good quality PVC steel wire hose lumen and the outer edge of the standard was circular, annular wall evenly distributed. With an inner diameter of 89mm, the thickness of 7mm pvc steel wire hose, for example, the poor quality of the thickest wall can reach 7.5mm, the thinnest at only 5.5mm, work under greater pressure, it is easy to wall uneven force PVC steel wire hose burst or cause deformation occurs, affect normal use.
2.Observe the existence of PVC steel wire hose wall of bubbles or other visible matter, whether it is colorless and transparent. High-quality steel wire hose wall PVC crystal clear, without any impurities. The defective PVC steel wire hose color yellow, may be due to improper handling decomposition, aging or long-term due to improper storage of the production process.
3, High-quality PVC steel wire hose with a little plastic odor, but no smell other petrochemical products. The inferior steel wire hose unpleasant pungent smell of diesel, especially in the hot summer, which is not close.
4, High-quality PVC steel wire hose inside and outside wall are smooth, feel good, and the low quality of the tube is rough.
5, When measuring the wall thickness should be truncated PVC hose at both ends of the wire section, select the intermediate hose as a sample test, prevent some unscrupulous manufacturers in the hose ends to make a fuss, the actual wall thickness of the hose at both ends.
6, At both ends of the interception of a few centimeters PVC steel wire, repeatedly folded wire, the detection wire strength and toughness. Poor quality steel folding one or two will break, and high quality steel wire need special tools to cut off. Quality determines the quality of the whole steel wire hose, due to the wire causing quality problems of PVC steel wire hose is prone to irreversible deformation.
