The effects which by the welding the material
The Effect of Welding Material on Weld Microstructure and Properties of Spiral Two-step Welding Pipe
Abstract: Aim at the problem of LASO steel weld impact property which occurred in mass production spiral two-step welding pipe using the welding wire with higher contents of Cr Ni Ti and other elements to conduct welding weld sample was taken out through different welding match the microstructure and mechanical properties were analyzed the results indicated that the total quantity of proeutectoid ferrite distributed in both sides of column crystal was reduced after replacing welding wire. The weld microstructure mainly included acicular ferrite the grain of acicular ferrite (AF) proeutectoid fen'ite (PF)was finer its impact toughness value was obviously increased. Key words: spiral two-step welding pipe; welding material component; proeutectoid ferrite (PF); acicular fenite (AF); impact toughness
These aspects will effect the quality of Submerged arc welding steel pipe.
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.
