The role of 16Mn seamless steel pipes is becoming stronger and stronger. Many manufacturers are producing 16Mn seamless steel pipes.
16Mn seamless steel pipes have very high technical requirements in the production and production and operation. Especially 16Mn seamless steel pipes are used in the construction and pipeline industries, which have played a huge role. Sometimes 16Mn seamless steel pipe plays a huge role mainly due to its wear resistance. Because 16Mn seamless steel pipe has better wear resistance, it is a very important industry. It will not corrode and is not easy to be corroded. , Can get huge applications in many fields.
16Mn seamless steel pipe is a low-alloy high-strength structural steel with a carbon content of 0.1%-0.25%. 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. There are mainly Q295, Q345, Q390, Q420, Q460. : "Q" is the initial Chinese pinyin of the word "qu" for yielding, the following number is the minimum yield point (σs) value of the grade, and the following symbol is based on the increase in the content of impurity elements (sulfur, phosphorus) of the steel It is divided into four grades A, B, C, D when it is low and with the change of carbon and manganese elements. Among them, A and B grade steels are usually called the chemical composition of 16Mn seamless steel pipes: C: 0.12~0.20; Mn: 1.20~1.60; Si: 0.20~0.55; tensile strength: 470~660 N/mm2; yield strength: 275 ~345 N/mm2; Elongation: 21%.
16Mn seamless steel pipe (a53 grade b pipe)and 16MnR, 19Mng merged into Q345R. Q345R is an ordinary low-alloy steel, a commonly used steel for boilers and pressure vessels. The delivery status is divided into: hot-rolled or normalized. It is a low-alloy steel with low Mn content. The performance is similar to 20G (412-540), the tensile strength is (450-655) slightly stronger, and the elongation is 19-21%, which is worse than 20G (more than 24%). Q345R process reference standard GB713-2008.
16Mn seamless steel pipe is an ordinary low-alloy steel, a commonly used steel for boilers and pressure vessels, hot-rolled or normalized. It is a low-alloy steel with low Mn content. The performance is similar to 20G (412-540), the tensile strength is (450-655) slightly stronger, and the elongation is 19-21%, which is worse than 20G (more than 24%).
The difference between different specifications of straight seam steel pipe
There are many types of steel pipes, which can be divided into straight seam steel pipes and spiral steel pipes according to the welding method. Because the two steel pipes have different welding methods, the performance is also different.
Three production processes of welded pipe
This time we mainly introduce welded steel pipe, that is, welded steel pipe. Its production is to bend the tube blank (steel plate and steel strip) into the required cross-section shape and size tube by various forming methods, and then weld the weld by different welding methods to get the steel pipe.
The influence of welded pipe blank width consumption
Welded pipe blank is the raw material for manufacturing welded pipe. Its mechanical properties and chemical composition have a far-reaching impact on the quality of welded pipe. Its width is an important factor to determine the weld strength. We usually say that the appropriate width of welded pipe blank refers to the width of a given thickness. The determination of the width is restricted by many factors.
