20 Years of Experience in Seamless Steel Tube Production

How to Manufacture Welded Steel Pipe

Views:223     Author:ShengDingYuan     Publish Time: 2019-04-10      Origin:Site

Welded steel pipe, also known as, is a steel plate or strip after curl forming welded steel. Welded steel pipe production process is simple, high production efficiency, different specifications, less capital equipment, but the general strength of less than seamless steel tubes. Since the 1930s, with the progress of high-quality steel rolling production and the rapid development of welding and inspection techniques, and continuously improve the quality of welds, welded steel pipe increasing varieties and specifications, and in more and more areas instead of nothing pipe joints. Welded steel pipe welds in the form of divided Longitudinal and spiral welded pipe.


Longitudinal production process is simple, high efficiency, low cost, rapid development. Spiral Welded Longitudinal generally higher than high, can narrow the billet production of large diameter pipe, you can also use the same width of the billet production of different pipe diameters. However, compared with the same length of straight pipe seam weld length of 30 to 100%, and lower production rate.


Therefore, smaller diameter pipe were powered by straight seam welded, large diameter spiral welded pipe for the most.

1. Low fluid delivery welded steel pipe (GB / T3092-1993), also known as general welded pipe, commonly known as the clarinet. Welded steel pipe for conveying water, gas, air, oil and heating steam and other general low pressure fluid and other uses. Divided into ordinary steel pipe wall thickness and pick thicker steel; take over end into the form without the steel tube (fluorescent tubes) and with a steel pipe. Steel pipe with a nominal diameter size (mm), said nominal diameter is the diameter of the approximation. Traditionally commonly expressed in inches, such as 11/2 and so on. Low pressure liquid delivery welded steel pipe for conveying fluids in addition to direct, but also widely used as low pressure fluid high percision galvanized steel tube original.



2. The low pressure fluid galvanized welded steel pipe (GB / T3091-1993), also known as galvanized welded steel pipe, commonly known as white tube. Is used for conveying water, gas, oil and air heating steam, heated and other general low pressure fluid or other uses of hot-dip galvanized welded (furnace brazed or welded) steel pipe. Pipe wall thickness is divided into ordinary galvanized steel pick and thicker galvanized steel; take over end into the form of a threaded galvanized steel pipe without threaded galvanized steel and band. Steel pipe with a nominal diameter size (mm), said nominal diameter is the diameter of the approximation. Traditionally commonly expressed in inches, such as 11/2 and so on. (Tianyang Steel Tube)

welded steel pipe


3. Ordinary carbon steel wire casing (GB3640-88) is the industrial and civil construction, installation of machinery and equipment and other electrical installation work for the protection of steel wires.

4. straight seam welded steel pipe (YB242-63) is parallel to the longitudinal welds and steel pipe. Usually divided into metric welded steel pipe, welded tube, transformer cooling tubing and more.

5. Pressure fluid transport spiral submerged arc welded pipe (SY5036-83) is a hot-rolled steel strip coils for the tube, often warm spiral shape, with double-sided submerged arc welding method for pressurized fluid transport spiral pipe joints. Strong pressure steel, welding performance, through a variety of rigorous scientific examination and testing, the use of safe and reliable. Pipe diameter, high transmission efficiency, and can save the laying of pipeline investments. Mainly used to transport oil, natural gas pipelines.

6. Pressure fluid transport with spiral seam high frequency welded steel pipe (SY5038-83) is a hot-rolled steel strip coils for the tube, often warm spiral shape, using high-frequency welding lap welding method for pressurized fluid transport spiral seam high frequency welded steel pipe. Strong pressure steel, plastic, and easy welding and machining molding; and through a variety of rigorous scientific examination and testing, the use of safe, reliable, pipe diameter, high transmission efficiency, and save the laying of pipeline investments. Mainly used for laying transport oil, natural gas pipelines.

7. The general low pressure liquid delivery spiral submerged arc welded pipe (SY5037-83) is a hot-rolled steel strip coils for the tube, often warm spiral shape, using double-sided automatic submerged arc welding or welding into the legal system for water, gas, air and steam low pressure liquid delivery SAW pipe.

8. The general low pressure liquid delivery spiral seam high frequency welded steel pipe (SY5039-83) is a hot-rolled steel strip coils for the tube, often warm spiral shape, using high-frequency welding lap welding method for low pressure liquid delivery spiral seam high frequency welded steel pipe. 

9. Pile with spiral welded steel pipe (SY5040-83) is a hot-rolled steel strip coils for the tube, often warm spiral shape, using double-sided submerged arc welding or high frequency welded for civil engineering structures, piers, bridges such as steel pipe pile foundation.


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