How to Measure the Surface Roughness of Carbon Steel Pipe?
Date:2023-06-13
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The roughness of carbon steel pipe (cs pipe) refers to an index of surface quality, which is usually used to describe the smoothness of the surface of carbon steel pipe after processing. It is usually expressed in Ra value (average roughness) or Rz value (maximum peak height). The measurement of the roughness of carbon steel pipes can be carried out by optical methods, mechanical methods and electrical methods.
The roughness of carbon steel pipe is too small is related to the type of carbon steel material, use environment, processing method and other factors. Generally speaking, the surface of high-purity carbon steel is relatively smooth, while the surface of carbon steel containing impurities is rougher. After the surface of carbon steel is processed, its roughness will also change, and it usually needs to be adjusted according to the specific application requirements.
What is the absolute roughness of ordinary carbon steel pipe?
The absolute roughness of ordinary carbon steel is 0.06mm.
The newly installed carbon steel pipe has a rough inner wall (internal roughness 1.9μm), and the roughness increases year by year due to corrosion, which directly leads to a decrease in flow rate and an increase in pressure. Absolute roughness refers to the average height of the convex part of the wall.
What is the surface roughness of carbon steel pipe after pickling?
The greater the surface roughness of the substrate, the greater the corrosion rate, and the more serious the corresponding "over-pickling" phenomenon. Only by effectively controlling the "over-pickling" phenomenon can the clean production level of the pickling process be effectively improved. If there is galvanized Or surface treatment such as pickling, can be considered according to Ra12.5.
Tips: Carbon steel pipe is made of steel ingots or solid round steel through perforation into capillary, and then made by hot rolling, cold rolling or cold drawing. Carbon steel pipe is the most common type of steel pipe. It is a steel pipe produced from carbon steel. Carbon steel pipes can be divided into seamless pipes, straight seam steel pipes and spiral steel pipes. Rolled seamless carbon steel pipe is made of steel ingot or solid round steel through perforation to make capillary, and then hot rolled, cold rolled or cold drawn.
