Large diameter spiral pipe Q235B spiral pipe spot wholesale manufacturer specializes in production

材质：

Q235B

规格：

219mm以上

质量等级：

正品（受质量异议）

Materials above specifications origin/manufacturer Hebei Cangzhou brand
Quality grade symbol Deoxidation method symbol
Quality grade is divided into grades with poor quality and grade with the highest quality. The deoxidation method symbols are and, which respectively represent boiling steel, semi-killed steel, killed steel and special killed steel. However, in the grade representation method, the symbols and can be omitted.
The different grades represent mainly different impact temperatures.
It means no impact, the difference is above degrees, above degrees, above degrees, above degrees, to the difference, refers to the difference in impact temperature in their performance.
They are divided into grades, which are not required for impact toughness test, grade for normal temperature (℃) impact toughness test, grade for ℃ impact toughness test, grade for ℃ impact toughness test, and grade for ℃ impact toughness test. The impact toughness test uses Charpy notch specimens. The impact toughness index is. The above grades of steel are required to meet their respective different temperature requirements. At different impact temperatures, the impact values are also different.
Spiral seam submerged arc welded steel pipe
Spiral seam submerged arc welded steel pipe refers to a metal pipe with a spiral seam welded using the submerged arc welding process.
Usage
Generally used in welding into pipelines for fluid transportation, metal structures, pile foundations, etc.
The products are widely used in water supply projects, petrochemical industry, chemical industry, electric power industry, agricultural irrigation, and urban construction. They are one of the twenty key products developed in our country. Used for water supply and drainage for liquid transportation. For gas transportation, coal gas, steam, and liquefied petroleum gas are used. It is used as piling pipes for structures, pipes for bridges, wharves, roads, building structures, etc.
Features
It can use narrower billets to produce welded pipes with larger diameters, and can also use billets of the same width to produce welded pipes with different diameters. The production cost is low, the process is simple
and it is easy to produce large-diameter pipes. Large-diameter welded pipes mostly use spiral seam submerged arc welding process.
Raw materials
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