16Mn spiral steel pipe, 16Mn alloy pipes, ST52 Steel pipes

The intensity of 300, 350, 400 and 450MPa by other four levels. There are Q295, Q345, Q390, Q420, Q460. : "Q" is the surrender of the "wrongly accused" big write the first word of the pinyin, then figure the minimum yield point for the grade (σs) value, then the symbol is in accordance with the impurities in the steel (S, P) content by high- to low and with carbon, manganese changes were divided into A, B, C, D 4 and so on. Where A, B grade of steel usually called 16Mn, the materials used do not only for the 16Mn steel pipe noted in .16 Mn steel making process can be divided into different seamless and welded steel 16Mn 16Mn steel.