1）Identify the material
Colored stainless steel pipes are made of ordinary stainless steel pipes through vacuum electroplating. Commonly used materials in electroplating include 201 stainless steel pipe, 304 stainless steel pipe, 316 stainless steel pipe, etc. Because the price difference of raw materials is relatively large, some unscrupulous merchants use inferior 201 stainless steel pipes instead of 304 stainless steel pipes and 316 stainless steel pipes. During the purchase and inspection process, the material of the colored stainless steel pipe must be strictly observed, and the different materials of the stainless steel pipe can be distinguished by testing chemicals.
2）Colored stainless steel pipe technology
The coloring process of colored stainless steel pipes is one of the important factors that determine the price. The prices of colored stainless steel pipes colored by vacuum electroplating and water plating are different. Water-plated colored stainless steel pipes are colored by soaking them in chemicals. The vacuum electroplating coating layer has greater bonding force with the surface of the workpiece, the hardness of the film layer is higher, the wear resistance and corrosion resistance are better, and the performance of the film layer is also more stable（Such as Titanium stainless steel tube). The golden yellow surface of water-plated titanium gives the impression that it has been sprayed on. Vacuum electroplating does not produce toxic or polluting substances. Water plating will produce wastewater pollution. Compared with vacuum ion plating, the color is not as pure and shelling will occur, but the price is much cheaper than vacuum plating.
3）Colored stainless steel tube surface
Colored stainless steel pipes are mainly used in building decoration projects, and have relatively high requirements for surface decoration and ornamental qualities. Therefore, when inspecting the goods, it is necessary to carefully inspect and observe the surface to see if there are defects such as color difference, uniform coloring, good color, scratches, blisters, peeling watermarks, etc. between the boards. Especially for titanium stainless steel pipes, the surface has a mirror effect. If the quality is good, there should be no grinding marks and horseshoe marks on the surface, the brightness will be high, and the price will be relatively high.