Year1
- 材质：
- Q235B
- 规格：
- 219mm以上
- 质量等级：
- 正品（受质量异议）
. Brand name
. 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.
, different grades represent mainly different impact temperatures.
. Refers to the difference between no impact and above degrees, above degrees, above degrees, above degrees, and 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.
.Specifications*,*,*, the above material origin/manufacturer is Cangzhou, Hebei
., Product Introduction
.Double wire, double-sided submerged arc welding spiral steel pipe is welded by arc under the flux layer This method uses the heat generated by the arc burning under the flux layer between the welding wire and the flux to melt the welding wire flux and the base metal.
., Features
.The main features of this product are: first, double-sided submerged arc welding, which not only has a high deposition rate, but also has deep penetration capabilities; second, the arc and welding zone are well protected, and the weld seam It has excellent quality, good density, and the appearance of the weld is flat and smooth, which can meet various performance requirements of the weld.
.. Product implementation standards and uses
.This product implements /, / / standards and is mainly used in common fluid projects such as oil, gas, natural gas, water pipelines, thermal power generation, etc.
., Product specifications
Wall thickness, material grade.
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