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Erw steel pipe product knowledge

Erw steel pipe, also known as welded pipe, steel sheet or strip is molded after a curling welded steel pipe. Erw steel pipe production process is simple, high production efficiency, variety specifications, equipment owned small, but generally less than seamless strength. Since the 1930s, along with high-quality strip steel rolling production as well as the rapid development of welding and inspection technology, continuously improve the quality weld, Erw steel pipe increasing varieties and specifications, and in more and more areas instead of seamless steel pipe.

Erw steel pipe divided by the form of the weld Longitudinal and spiral welded pipe. Longitudinal production process is simple, high efficiency, low cost, rapid development. Spiral Welded Longitudinal generally higher than, can narrow the billet production of large diameter pipe, you can also use the same width of the billet production of different pipe diameters. But with the same length of straight pipe joints than weld length of 30 to 100%, and lower production rate.

Therefore, the smaller diameter pipe is mostly a straight seam welded, large diameter spiral welded pipe is mostly used. 

1, Low pressure liquid delivery Erw steel pipe (GB/T3092-1993), also known as general welded pipe, commonly known as the clarinet. Is used for conveying water, gas, air, oil and heating steam and other general low pressure fluid and other uses Erw steel pipe. Then divided into ordinary steel pipe wall thickness and thicker steel; pipe ends into the form of steel pipes without (fluorescent tubes) and with steel pipe. Pipe specifications with nominal diameter (mm), said nominal diameter is the inner approximation. Customary commonly expressed in inches, such as 11/2 and so on. Low pressure liquid delivery Erw steel pipe in addition to direct for conveying fluids, but also for a large number of low-pressure fluid delivery galvanized Erw steel pipe of the original tube.

2, The low-pressure fluid delivery galvanized Erw steel pipe (GB/T3091-1993), also known as galvanized welded steel pipe, commonly known as white tube. Is used for conveying water, gas, air and steam heating oil, warm water, etc. are generally lower pressure fluid or other uses hot-dip galvanized welded (furnace brazed or welded) steel pipe. Then divided into ordinary steel pipe wall thickness galvanized steel and thicker galvanized steel pipe; pipe ends into the form of non-threaded galvanized steel and galvanized steel pipe with thread. Pipe specifications with nominal diameter (mm), said nominal diameter is the inner approximation. Customary commonly expressed in inches, such as 11/2 and so on.

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

4, Straight seam welded steel pipe (YB242-63) is parallel to the longitudinal weld steel pipe and steel pipe. Usually divided into metric welded steel pipe, welded thin-walled tube, transformer cooling pipes and so on.

5, The pressure transmission fluid with 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 pressure fluid transfer spiral seam steel pipe. Strong pressure steel, welding performance, through a variety of rigorous scientific examination and testing, the use of safe and reliable. Large diameter steel pipe, transmission efficiency, and can save the laying of pipeline investments. Mainly used to transport oil, natural gas pipelines.

6, The pressure transmission fluid with frequency spiral welded pipe (SY5038-83) is a hot-rolled steel strip coils for the tube, often warm spiral shape, lap welding method with high frequency welding, pressure fluid transfer The frequency spiral welded steel pipe. Strong pressure steel, plastic, and easy welding and machining molding; through a variety of rigorous and scientific examination and testing, the use of safe, reliable, large diameter pipe, transmission efficiency, and save the laying of pipeline investments. Mainly used for laying transport oil, natural gas and other 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, carbon seamless steel pipe manufacturer china 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 frequency spiral welded pipe (SY5039-83) is a hot-rolled steel strip coils for the tube, often warm spiral shape, lap welding method with high frequency welding for general low pressure liquid delivery spiral High-frequency welded steel pipe.

9, The 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, and for civil engineering structures, docks , bridges and other steel pipe pile foundation.

Hebei ChongSheng Special Steel Pipe Co.,Ltd.
Add: YANSHAN COUNTY,HEBEI PROVINCE,CHINA