Flange is an essential accessory for industrial fluid pipelines, and carbon steel flange and stainless steel flange are two most common materials, so how to distinguish between carbon steel flange and stainless steel flange? In the distinction, first know the common manufacturing materials of carbon steel tabs and stainless steel tabs.
The commonly used carbon steel flange manufacturing materials are 20#, A3, Q235, Q235A, Q235B, A105, Q345B, etc., carbon steel flange due to the relatively low manufacturing cost, good mechanical properties and ability to pressure load, in the construction of fluid pipelines represented a high proportion.
Commonly used stainless steel flange manufacturing materials are 304, 304L, 316, 316L, S30408, S30403, S31608, S31603, TP321, 06Cr19Ni10, 00Cr17Ni14Mo2, 1Cr18Ni9Ti, 06Cr17Ni12Mo2, Cr17Ni12Mo2, etc., from the name of stainless steel you can see that stainless steel contains chromium, nickel and other chemical components, With these components, stainless steel does not rust.
The first method is seen by the naked eye, the color of the carbon steel flange and the stainless steel flange is more obvious, the surface of the stainless steel flange is relatively smooth, and the surface of the carbon steel flange is generally rough, if there are conditions to compare two flanges of different materials, it is obvious.
The second method is the rust drip method, the surface of the ungalvanized carbon steel flange and brush the anti-rust paint, wipe the oil on the surface of the flange, and then drop water to the flange, if it is a flange Carbon steel usually a few hours will have obvious yellow-brown rust, if it is stainless steel flange, just leave a water mark that will not have rust.
The third method is the potion inspection method, the stainless steel liquid reagent is only suitable for stainless steel flanges, according to its color change and color change effect change time to confirm which material it is made of. treats.
The fourth method is direct reading spectrometer, general flange manufacturers often use method spectrometer, it can accurately detect what material the flange is, but its price is more expensive, it has not been completely popularized.
The above is carbon steel flange and stainless steel flange commonly used as a differentiation method, carbon steel flange and stainless steel flange difference is rust, anti-corrosion ability is strong, anti-rust and anti-corrosion effect Stainless steel is stronger than carbon steel, but the cost of carbon steel flange is lower than stainless steel flange, you can choose according to the actual project needs.
