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）
Large diameter spiral steel pipe is a general term, generally referring to spiral steel pipes with a diameter greater than one meter. Spiral steel pipes are made of steel strips that are bent and then welded.
General material,
Brief description
Large-diameter spiral steel pipe is a general term, generally referring to spiral steel pipes with a diameter greater than one meter. Spiral steel pipes are made of steel strips that are bent and then welded. Steel pipes need to undergo hydraulic pressure, bending, flattening and other experiments, and have certain requirements for surface quality. The delivery length is usually meters, and delivery to fixed length is often required. The specifications of spiral steel pipes are expressed in nominal diameter (mm). The nominal diameter is different from the actual diameter. According to the specified wall thickness, there are two types: ordinary steel pipes and thickened steel pipes.
Material
Commonly used materials in China are,
Purpose
Spiral steel pipe is mainly used in water supply projects, petrochemical industry, chemical industry, electric power industry, agricultural irrigation, and urban construction. It was developed in my country One of the twenty key products. 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.
Spiral tube is a commonly used material in spiral tubes. It is a spiral seam steel pipe that is made of strip steel coils as raw materials, extruded at regular temperatures, and welded by automatic double-wire double-sided submerged arc welding technology.
/ It is made of hot-rolled steel strip coils as pipe rings, often heated and spirally formed, and made by double-sided automatic submerged arc welding or single-sided welding. It is used for general low-pressure liquid transportation such as water, gas, air, and steam. Submerged arc welded steel pipe. / is the petroleum ministry standard, generally called the ministry standard. Spiral seam submerged arc welded steel pipe for general low-pressure fluid transportation () is 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.
Theoretical weight formula of spiral steel pipe (outer diameter, wall thickness), wall thickness. Weight per meter (kg/m)
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