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What is the production process of the straight seam welded pipe unit?
Release time:
2018-12-06 13:53
Longitudinal welded pipe machine has the advantages of simple production process, high production efficiency, low cost and rapid development. The strength of spiral welded pipe is generally higher than that of straight seam welded pipe. It can produce welded pipe with larger pipe diameter with narrow blank, and can also produce welded pipe with different pipe diameter with blank of the same width. However, compared with the same length of the straight seam pipe, the length of the weld is increased by 30 to 100, and the production speed is low.
Longitudinal welded pipe machine has the advantages of simple production process, high production efficiency, low cost and rapid development. The strength of spiral welded pipe is generally higher than that of straight seam welded pipe. It can produce welded pipe with larger pipe diameter with narrow blank, and can also produce welded pipe with different pipe diameter with blank of the same width. However, compared with the same length of the straight seam pipe, the length of the weld is increased by 30 to 100, and the production speed is low.
Therefore, most of the smaller diameter welded pipes are welded by straight seam welding, and most of the large diameter welded pipes are welded by spiral welding.
1. Low pressure fluid transportation with welded steel pipe (GB/T3092-1993), also known as the general welded pipe, commonly known as black pipe. It is a welded steel pipe used to transport water, gas, air, oil and heating steam and other general low pressure fluids and other purposes. The wall thickness of steel pipe is divided into ordinary steel pipe and thickened steel pipe. The form of pipe end is divided into unthreaded steel pipe (smooth pipe) and threaded steel pipe. The specification of the steel pipe is expressed in nominal diameter (mm), and the nominal diameter is the approximate value of the inner diameter. Traditionally, inches are commonly used to indicate that welded steel pipes for low-pressure fluid transportation are not only directly used for conveying fluids, but also used in large quantities as the original pipes of galvanized welded steel pipes for low-pressure fluid transportation.
2. Galvanized welded steel pipe for low pressure fluid transportation (GB/T3091-1993), also known as galvanized welded steel pipe, commonly known as white pipe. It is used for conveying water, gas, air oil and heating steam, warm water and other generally lower pressure fluid or other purposes of hot-dip galvanized welding (furnace welding or electric welding) steel pipe. The wall thickness of the steel pipe is divided into ordinary galvanized steel pipe and thickened galvanized steel pipe; the form of the nozzle end is divided into non-threaded galvanized steel pipe and threaded galvanized steel pipe. The specification of the steel pipe is expressed in nominal diameter (mm), and the nominal diameter is the approximate value of the inner diameter. It is customary to use inches, such as 11/2.
3. Ordinary carbon steel wire casing (GB3640-88) is a steel pipe used to protect wires in industrial and civil construction, installation of machinery and equipment and other electrical installation projects.
4. Longitudinal welded steel pipe (YB242-63) is a steel pipe with a longitudinal parallel weld. Usually divided into metric welded steel pipe, welded thin-walled pipe, transformer cooling oil pipe and so on.
5. Spiral seam submerged arc welded steel pipe for pressurized fluid transportation (SY5036-83) is a spiral seam steel pipe for pressurized fluid transportation, which is made of hot rolled steel strip as pipe blank, often warm spiral forming, and welded by double-sided submerged arc welding method. The steel pipe has strong pressure bearing capacity and good welding performance. It has passed various strict scientific inspections and tests and is safe and reliable to use. The diameter of the steel pipe is large, the transmission efficiency is high, and the investment of laying pipelines can be saved. Mainly used to transport oil, natural gas pipeline.
6. Spiral seam high-frequency welded steel pipe (SY5038-83) for pressurized fluid transportation is a spiral seam high-frequency welded steel pipe used for pressurized fluid transportation, which is made of hot-rolled steel strip coils as pipe blanks, often warm spiral forming and welded by high-frequency lap welding. The steel pipe has strong pressure bearing capacity, good plasticity, and is convenient for welding and processing; after various strict and scientific inspections and tests, it is safe and reliable to use, with large steel pipe diameter, high transmission efficiency, and can save the investment in laying pipelines. It is mainly used for laying pipelines for transporting oil and natural gas.
7. Spiral seam submerged arc welded steel pipe (SY5037-83) for general low-pressure fluid transportation is made of hot-rolled steel strip as pipe blank, often warm spiral forming, and is made of double-sided automatic submerged arc welding or single-sided welding method. Submerged arc welded steel pipe for general low-pressure fluid transportation such as water, gas, air and steam.
8. Spiral seam high-frequency welded steel pipes (SY5039-83) for general low-pressure fluid transportation are made of hot-rolled steel strips as tube blanks, which are often formed by warm spirals, and welded by high-frequency lap welding method. Spiral seam high-frequency welded steel pipes for general low-pressure fluid transportation are used.
9. Spiral weld steel pipe for pile (SY5040-83) is made of hot-rolled steel strip coil as pipe blank, often warm spiral forming, and is made of double-sided submerged arc welding or high-frequency welding. It is used for civil construction structure, wharf, bridge and other foundation pile steel pipe.
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