Causes of poor quality DSAW steel pipe surface is easy to produce scarring of two things:(1) Low-quality spiral steel material uneven impurities....
Causes of poor quality DSAW steel pipe surface is easy to produce scarring of two things:(1) Low-quality spiral steel material uneven impurities.(2) Low-quality material manufacturers guide and guard the poorly equipped, easy to stick steel, easy to produce these impurities bite roll scarring after.Inferior spiral steel cross ribs thin and low, often sufficient dissatisfaction phenomenon, because manufacturers to achieve large negative tolerance, finished the first few tracks reduction is too large, iron-type small, pass sufficient dissatisfaction. Inferior structural steel pipewithout metallic luster, pale red or similar color of pig iron, there are two two reasons, it is blank adobe. Inferior-rolling temperature is not standard, they are visually steel temperature, so can not be carried out according to the provisions of the austenitic region of rolling, the natural properties of the steel can not be reached.
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.
