Supply Q235B large-diameter double-sided submerged arc spiral welded pipe and spiral pipe in stock

Description :

　　SY5037 spiral steel pipe is a submerged arc welded steel pipe used for general low-pressure fluid transportation such as water, gas, air, and steam, made by double-sided automatic submerged arc welding or single-sided welding method. SY/T5037 Spiral steel pipes should be stored in a clean and well drained area, away from factories or mines that produce harmful gases or dust. Weeds and all debris should be removed from the site, and the SY/T5037 spiral steel pipe should be kept clean.

　　Moreover, the SY5037 spiral steel pipe can not only expand the physical adsorption effect of the pipe surface during rust removal, but also enhance the mechanical adhesion effect between the anti-corrosion layer and the pipe surface. Therefore, SY/T5037 spiral steel pipe spray (throwing) rust removal is an imaginary rust removal method for pipeline anti-corrosion. Generally speaking, shot blasting (sand) rust removal is primarily used for the treatment of the inner and outer surfaces of pipes, while shot blasting (sand) rust removal is primarily used for the surface treatment of pipes.

　　SY5037 Spiral Steel Pipe Cleaning Method:

　　There are many ways to clean SY5037 spiral steel pipes. You can use tools such as wire brushes or sandpaper to roughly clean the profile of L555 spiral steel pipes. Only then can you clean the profile of the spiral pipe. If it can remove loose and overturned oxide scales, rust, welding slag, and other dirty tools. If you find this method troublesome, you can choose to use both chemical and electrolytic methods to acid wash L555 spiral steel pipes. Both methods are often effective and rough. L555 spiral steel pipe anti-corrosion only accepts chemical pickling and cannot be connected by electricity. The effectiveness of chemical cleaning is very fast, as long as preparations are made in advance, it will not cause any pollution. The cleaning of the corners of L555 spiral steel pipes is often a serious step, and it must be detailed.

　　Spiral steel pipe standard classification:

　　Pressure bearing fluid transportation, using spiral seam submerged arc welded steel pipe SY5036-2000, mainly used for pipelines transporting oil and natural gas;

　　Spiral seam high-frequency welded steel pipe SY5038-2000 for pressurized fluid transportation, welded by high-frequency lap welding method, used for spiral seam high-frequency welded steel pipe for pressurized fluid transportation. Steel pipes have strong pressure bearing capacity, good plasticity, and are easy to weld and process into shapes;

　　For general low-pressure fluid transportation, spiral seam submerged arc welded steel pipe SY5037-2000 is used, which is made by double-sided automatic submerged arc welding or single-sided welding method and is used for general low-pressure fluid transportation such as water, gas, air, and steam.

　　The commonly used standards for spiral steel pipes are generally divided into: SY/T5037-2008 (departmental standard, also known as spiral seam submerged arc welded steel pipes for ordinary fluid transportation pipelines), GB/T9711.1-2008 (national standard, also known as technical delivery conditions for petroleum and natural gas industry transportation steel pipes: Grade A steel pipes (GB/T9711.2 Grade B steel pipes with strict requirements)), API-5L (American Petroleum Institute, also known as pipeline steel pipes); It is divided into two levels: PSL1 and PSL2, and SY/T5040-2008 (spiral welded steel pipes for piles).

　　SY/T5037-2008 is a standard established by the Ministry of Petroleum and is generally referred to as a departmental standard

　　GB/T9711.1-2008 National Spiral Pipe, Steel Pipe for Petroleum and Natural Gas Industry Transportation, Grade A

　　The spiral seam high-frequency welded steel pipe (SY5039-2000) for general low-pressure fluid transportation is made of hot-rolled steel strip coil as the pipe blank, which is formed by constant temperature spiral welding and welded using high-frequency lap welding method for general low-pressure fluid transportation spiral seam high-frequency welded steel pipe.

　　Spiral welded steel pipe for piles (SY5040-2000) is made of hot-rolled steel strip coil as the billet, formed by constant temperature spiral welding, and made by double-sided submerged arc welding or high-frequency welding. It is used as a steel pipe for foundation piles in civil engineering and construction structures, docks, bridges, etc.

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• Q235B spiral welded pipe