Year1
- 材质：
- Q235B
- 规格：
- 219*6,720*8,820*8,325*10,920*8,1620*10,1620*16,2020*16,1820*12
- 质量等级：
- 正品（受质量异议）
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
,
Standard classification
Spiral seam submerged arc welded steel pipes for pressure-bearing fluid transportation are mainly used in pipelines for transporting oil and natural gas. Spiral seam high-frequency for pressure-bearing fluid transportation Welded steel pipe, welded by high-frequency lap welding method, spiral seam high-frequency welded steel pipe used for pressure-bearing fluid transportation. The steel pipe has strong pressure-bearing capacity, good plasticity, and is easy to weld and process. It is generally used for spiral seam submerged arc for low-pressure fluid transportation. Welded steel pipe, a submerged arc welded steel pipe made by double-sided automatic submerged arc welding or single-sided welding for general low-pressure fluid transportation such as water, gas, air, and steam
Common standards for spiral steel pipes are generally divided into / ( Industry standard, also called spiral seam submerged arc welded steel pipe for ordinary fluid transportation pipelines), / (national standard, also called oil and gas industry transportation steel pipe delivery technical conditions first part graded steel pipe (graded steel pipe and graded steel pipe with strict requirements)), (American Petroleum Institute standard, also called pipeline steel pipe, which is divided into two levels: and ), / (spiral submerged arc welded steel pipe for piles) Spiral submerged arc welded steel pipe for pressure fluid transportation () is a hot-rolled steel strip coil It is made into a pipe blank, often heated and spirally formed, and welded by double-sided submerged arc welding. It is a spiral seam steel pipe used for pressure fluid transportation. Steel pipes have strong pressure-bearing capacity and good welding performance. They have undergone various rigorous scientific inspections and tests and are safe and reliable to use. The steel pipe has a large diameter, high transportation efficiency, and can save investment in laying pipelines. Mainly used for pipelines transporting oil and natural gas.
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