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How to identify the pros and cons of steel tube
time:2016-04-06 08:55:16
1 to observe whether the lumen wall thickness is uniform rules. PVC wire pipe and the periphery of the standard round of good quality, the annular pipe wall Uniform distribution. The 89mm inner diameter and wall thickness of 7mm PVC steel pipe as an example, the poor quality of the pipe wall thickness can reach 7.5mm, the most
The thin part is only 5.5mm, work under pressure, it is easy to pipe wall stress uneven burst or cause deformation of PVC steel tube.
Ring for normal use.
2 observation of PVC steel pipe wall whether there are bubbles or other visible objects, whether it is colorless and transparent. High quality PVC steel wire The wall of the crystal, without any impurities. The defective PVC wire tube color yellow, may be in the production process due to improper handling Some decomposition, aging, or long-term storage caused by improper.In addition to the 3 little plastic smell and high quality PVC steel tube, without any other chemical products the smell of oil. And inferior steel wire tube Have an unpleasant pungent smell of diesel, especially in hot summer, people are not close.
4, high quality PVC steel pipe wall is smooth, feel good, and low quality of tube is rough.
5, measurement of wall thickness, steel tube ends should be cut off PVC, select the middle tube as the sample test, to prevent some unscrupulous manufacturers
The two tubes, the actual wall thickness at both ends of the tube.
In 6, PVC steel tube ends a few centimeters of the interception of wire, folding strength and toughness of steel wire, steel wire detection. The poor quality of steel
One or two wire folding will be broken, and the high quality PVC steel wire pipe special tool is needed to cut off. The quality of the steel wire determines
The quality of the whole pipe, the quality problems of PVC steel pipe is prone to deformation can not be recovered due to wire.
The thin part is only 5.5mm, work under pressure, it is easy to pipe wall stress uneven burst or cause deformation of PVC steel tube.
Ring for normal use.
2 observation of PVC steel pipe wall whether there are bubbles or other visible objects, whether it is colorless and transparent. High quality PVC steel wire The wall of the crystal, without any impurities. The defective PVC wire tube color yellow, may be in the production process due to improper handling Some decomposition, aging, or long-term storage caused by improper.In addition to the 3 little plastic smell and high quality PVC steel tube, without any other chemical products the smell of oil. And inferior steel wire tube Have an unpleasant pungent smell of diesel, especially in hot summer, people are not close.
4, high quality PVC steel pipe wall is smooth, feel good, and low quality of tube is rough.
5, measurement of wall thickness, steel tube ends should be cut off PVC, select the middle tube as the sample test, to prevent some unscrupulous manufacturers
The two tubes, the actual wall thickness at both ends of the tube.
In 6, PVC steel tube ends a few centimeters of the interception of wire, folding strength and toughness of steel wire, steel wire detection. The poor quality of steel
One or two wire folding will be broken, and the high quality PVC steel wire pipe special tool is needed to cut off. The quality of the steel wire determines
The quality of the whole pipe, the quality problems of PVC steel pipe is prone to deformation can not be recovered due to wire.
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