What is the way to extend the service life of 16Mn seamless steel pipe?

16Mn is a low-alloy high-strength structural steel: the carbon content is 0.1%-0.25%, and the main alloying elements manganese, silicon, vanadium, niobium and titanium are added; its total alloy content is less than 3%. According to the strength, it is divided into 4 levels of 300, 350, 400 and 450MPa.

The 16Mn structural steel pipe hardness test is the simplest and most feasible test method in the mechanical performance test. In order to replace certain mechanical performance tests with hardness tests, a more accurate conversion relationship between hardness and strength is required in production.

Practice has proved that there is an approximate corresponding relationship between the hardness value and the strength value of the 16Mn structural steel pipe material. Because the hardness value is determined by the initial plastic deformation resistance and the continued plastic deformation resistance, the higher the strength of the 16Mn structural steel pipe, the higher the plastic deformation resistance and the higher the hardness value.

Process flow

Tube blank-inspection-peeling-inspection-heating-perforation-pickling-grinding-lubrication and air drying-welding head-cold drawing-solution treatment-pickling-pickling Passivation-inspection-cold rolling-degreasing-cutting-air drying-internal polishing-external polishing-inspection-marking-finished product packaging

Weight calculation formula of the pipes

[(Outer diameter-Wall thickness)*Wall thickness]*0.02466=kg/m (weight per meter)

16Mn seamless steel pipe is now a relatively important type of steel. It is precisely because of its great effect and used in key areas, so the demand for it is still relatively large. At the time of purchase, there is still a concern about the service life of 16Mn seamless steel pipes, so how can we extend the service life of 16Mn seamless steel pipes?

The common method is:

The first method is to remove rust from steel pipes. When removing rust from steel pipes, steel wire brushes are mainly used to polish its surface. This method can effectively remove loose or raised rust on the surface of steel pipes.

The second method is to clean the surface of the steel pipe. When cleaning the steel pipe, the surface should be cleaned with solvent or emulsion to achieve the effect of degreasing and dust removal. This method is only suitable for removing grease on the surface of the steel pipe. And dust can not remove rust and oxide scale, so this method can only be used as an auxiliary means in anti-corrosion production.

The third method is to pickling steel pipes. When pickling steel pipes, both chemical and electrolytic methods are used. These two methods can remove the oxide scale of steel pipes. The reason why it is divided into two methods is that chemical cleaning can only clean the surface very thoroughly, and it is difficult to achieve the desired results in some small slits.

Tips:

ASTM A53 pipe (also referred to as ASME SA53 pipe) is intended for mechanical and pressure applications and is also acceptable for ordinary uses in steam, water, gas and air lines. It is suitable for welding and for forming operations involving coiling, bending, and flanging, subject to certain qualifications.

For more information, please visit: https://www.nan-steel.com/news/astm-a53.html

Marketing Director of Nansteel Manufacturing Co.,Ltd,which manufacture and supply differenet steel products, like seamless steel pipe, carbon steel pipe, stainless steel pipe, casing etc.