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Welded steel pipe is introduced in detail

Jun. 21, 2019

Welded steel pipe is introduced in detail

Welded steel pipe is also known as welded pipe, is made of steel plate or steel belt after crimping molding welded steel pipe. The welding steel tube production process is simple, the production efficiency is high, the variety specification is many, the equipment investment is little, but the general strength is lower than the seamless steel tube. Since the 1930s, with the rapid development of continuous rolling production of high quality strip steel and the progress of welding and inspection technology, the quality of welding seam has been continuously improved. Welded steel pipe is divided into straight welded pipe and spiral welded pipe according to the form of welding seam. Direct seam welded pipe production process is simple, high production efficiency, low cost, rapid development. The strength of spiral welded pipe is generally higher than that of straight welded pipe. The welded pipe with larger diameter can be produced with narrow blank, and the welded pipe with different diameter can also be produced with the same width of blank. However, compared with the same length of straight seam pipe, the weld length increases by 30~100%, and the production speed is lower. Therefore, the smaller diameter welded pipe mostly adopts straight seam welding, while the larger diameter welded pipe mostly adopts spiral welding.

1. Welded steel pipe by Welded steel pipes supplier, for low-pressure fluid transportation (GB/ t3092-1993), also known as general welded pipe, commonly known as clarinet. Is used to transport water, gas, air, oil and heating steam, such as the general lower pressure fluid and other purposes of welded steel pipe. The wall thickness of steel pipe is divided into ordinary steel pipe and thickened steel pipe. The type of nozzle is divided into non-rebar tube (light tube) and rebar tube. The specification of steel pipe is expressed by the nominal diameter (mm), the nominal diameter is the approximate value of the inner diameter. Inches are traditionally used, such as 11/2, etc. Welding steel pipe for low pressure fluid transportation is not only directly used for fluid transportation, but also widely used as the original pipe of galvanized welded steel pipe for low pressure fluid transportation.

2. Galvanized welded steel pipe for low-pressure fluid transportation (GB/ t3091-1993) is also known as galvanized electric welded steel pipe, commonly known as white pipe. Is used to transport water, gas, air, oil and heating steam, warm water and other general lower pressure fluid or other USES of hot dip galvanized welding (furnace welding or electric welding) steel pipe. The wall thickness of steel pipe can be divided into ordinary galvanized steel pipe and thickened galvanized steel pipe. The pipe end is divided into galvanized steel pipe without thread and galvanized steel pipe with thread. The specification of steel pipe is expressed by the nominal diameter (mm), the nominal diameter is the approximate value of the inner diameter. Inches are traditionally used, such as 11/2, etc.

3. Ordinary carbon steel wire sleeve (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.

Welded steel pipes supplier

4. Straight-seam electric welded steel pipe (yb242-63) is a steel pipe whose weld seam is parallel to the longitudinal direction of the steel pipe. Usually divided into metric electric welded steel pipe, electric welded thin wall pipe, transformer cooling tubing and so on.

5. Spiral seam arc welded steel pipe for confined fluid transportation (sy5036-83) is a spiral seam steel pipe used for confined fluid transportation with hot-rolled steel strip as pipe billet, often formed by warm spiral, and welded by double-sided submerged arc welding. Steel tube has strong bearing capacity, good welding performance, after various strict scientific inspection and testing, safe and reliable use. Large diameter steel pipe, high transmission efficiency, and can save the investment of laying pipeline. Mainly used to transport oil and gas pipelines.

6. Helical slit high-frequency welded steel pipe (sy5038-83) for confined fluid transportation is a helical slit high-frequency welded steel pipe used for confined fluid transportation, which is made of hot-rolled steel strip and formed by spiral forming at regular temperature and welded by high frequency lap welding. Steel tube has strong bearing capacity and good plasticity, which is convenient for welding and processing. Through all kinds of strict and scientific inspection and testing, the use of safe and reliable, large diameter steel pipe, high transmission efficiency, and can save the investment of laying pipelines. It is mainly used for laying pipelines for transporting oil and natural gas.

7. The spiral seam submerged arc welding steel pipe (sy5037-83) for general low-pressure fluid transportation is a kind of submerged arc welding steel pipe for water, gas, air and steam and other general low-pressure fluid transportation, which is made of hot-rolled steel strip rolled as pipe billet and usually formed by warm spiral molding.

8. Spiral slit high-frequency welded steel pipe (sy5039-83) commonly used for low-pressure fluid transportation is a hot-rolled steel strip as a tube billet, often temperature spiral forming, using high-frequency lap welding method for welding spiral slit high-frequency welded steel pipe commonly used for low-pressure fluid transportation.

9. Pile spiral weld steel pipe (sy5040-83) is a hot rolled steel strip as the billet, often warm spiral forming, using double submerged arc welding or

Made of high frequency welding, used for civil construction structure, wharf, bridge and other foundation pile steel pipe.