such difference of the two material
Q345 material can be 14 MNV MNNB, 12, 16 mnre, 16 mn, 18 nb, such as a variety of steel material substitution, is not the only alternative to 16 mn steel material. On the chemical composition, 16 mn material and Q345 material is not the same. The main thing is that two kinds of different thickness of yielding strength of steel group is put in bigger difference, this will cause some material with the change of the stress. Therefore, simply use 16 mn material stress applied on the Q345 material is not appropriate, and should be grouped according to material thickness size to determine the stress.
345 material proportion of main chemical elements and anastomosed with the 16 mn material basic difference is added trace alloy elements. A small amount of alloy element can refine grain and improve the toughness of the steel, steel comprehensive mechanical properties are improved greatly. Also because of this, the thickness of the steel plate can be done. Q345 material, therefore, the comprehensive performance is better than that of 16 mn material, especially its low temperature performance is 16 mn what material does not have, Q345 material allowable stress than 16 mn material.
so in theERW steel pipe production,we should made the right choice.
Difference of PSL1 and PSL2(API 5L)
The API 5L has two standards, PSL1 and PSL2, which are very different from each other. I'll talk more about the differences between PSL1 and PSL2.
Production Process of Pipe Fitting
There are many kinds of processing methods for pipe fittings.
The Future of Steel Pipe Development
The future of steel pipe development is looking promising, according to expert analysis and data. The price of carbon steel pipe is predicted to bounce back this year, with China leading the way in increasing steel consumption demands. This is due to a series of government initiatives aimed at stimulating domestic demand, including the construction of affordable housing and infrastructure projects. The demand for structural steel pipe is also on the rise, thanks to state investment in housing and engineering projects. With private investment projects also gaining popularity, the steel pipe market is set to thrive in 2017.
