This artical introduce two kind of galvanized technical
Due to the different production processes and points of seamless and welded pipe. Seamless steel tubes including hot-rolled, cold-rolled, cold-drawn as well as some other rare cold extrusion. That is to say you have welded pipe joints are welded steel curl, small is generally straight seam welded, spiral welded large generally. Since the pipe welds, weld poor mechanical properties, so its scope is limited, but its price is the price cheaper.
And seamless steel pipe joints are divided according to the processed forms, seam welded steel pipe generally, there are cold-drawn and hot rolled seamless steel tubes in two ways, carbon steel pipe is on the material, the galvanized pipe is welded pipe production After the surface has been galvanized
How to distinguish and seamless steel pipe joints: The main difference between using:1, pipe joints generally able to withstand the maximum working pressure in less than 20 kg, which is the safest range. It is generally used for water, gas, compressed air and other low pressure fluid;2, seamless pipe can withstand high pressure, of course, the wall thickness will also increase pressure requirements which need to be designed. It is generally used for devices using high-pressure tubing, boiler tubes and other high temperature and pressure. There are also structural seamless pipe, which demanded to see the design.3, currently there are some pipe joints of pipe seamless process, which is to weld annealing process, eliminating the residual stress of the weld, the weld and base metal rather, its pressure range of basic and seamless quite. It may also be considered.4, of course, there are some on the market using the pipe joints after redrawing overall heating or seamless steel pipe with a core rolling, mainly to the small size of the main tubes are seamless belong only in appearance, its essence and Not very good
The use of: seamless Steel is the use of hot and cold pull made of commonly used media pressure equal to or greater than 1.6MPa pipe joints after the steel plate butt welded high frequency, suitable for medium pressure less than 1.6MPa.
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.
