steel tube pipe

(9) using air plasma cutting machine to cut a single pipe.
(10) cut into a single pipe, the first three to each batch of steel the first rigorous inspection system to check the weld mechanical properties, chemical composition, fusion status, after the steel surface quality and NDT testing to ensure system management processes qualified, in order to put into production.
(11) weld marks on the site of a continuous wave testing, ultrasound and X-ray after manual review, if there are defects, after repaired again after a non-destructive testing, defect until confirmation has been eliminated.
alloy pipe

5. Pressurized fluid transport spiral seam high frequency welded steel pipe (SY5038-83) is a hot-rolled steel strip for the tube volume, often warm spiral shape, using high-frequency welding of lap welding method for conveying pressure fluid spiral high-frequency welded steel pipe. Steel pressure ability, good plasticity, easy welding and forming process; through a variety of rigorous and scientific examination and testing, the use of safe, reliable, large-diameter steel pipe, transmission efficiency, and save the laying of pipeline investments. Mainly used for laying of transmission oil and natural gas pipeline.steel tube pipe

3 straight seam welded steel pipe (YB242-63) is parallel to the longitudinal weld steel pipe with steel pipe. Metric is usually divided into welded steel pipe, welded thin-walled tube, transformer cooling pipes and so on.
4. Pressurized fluid transport spiral submerged arc welded pipe (SY5036-83) is a hot-rolled steel strip for the tube volume, often warm spiral shape, with double-sided submerged arc welding method for conveying pressure fluid spiral pipe joints. Strong pressure pipe welding performance, through a variety of rigorous scientific examination and testing, safety and reliability. Large diameter pipe, transmission efficiency, and save the laying of pipeline investments. Mainly used for transportation of oil, natural gas pipelines.steel tube pipe

1 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 fluids such as low-pressure or other general purpose hot-dip galvanized welding (welding or welding furnace) steel pipe. Pipe connection wall is divided into ordinary galvanized steel and thicker galvanized steel pipe; take over the side into the form without threaded galvanized steel pipe and threaded galvanized steel pipe. With a nominal pipe size diameter (mm) that the nominal diameter is the diameter of the approximation. Traditionally used in inches, such as 11 / 2 and so on.steel tube pipe
2 ordinary carbon steel wire casing (GB3640-88) is the industrial and civil construction, installation of machinery and equipment and other electrical installation works for the protection of wire and steel pipe.

Low pressure liquid delivery welded 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 the general low-pressure steam heating fluid and other uses welded steel pipe. Then divided into ordinary steel pipe wall thickness and thicker steel; take over the side into the form without a steel tube (fluorescent tubes) and with a steel pipe. With a nominal pipe size diameter (mm) that the nominal diameter is the diameter of the approximation. Traditionally used in inches, such as 11 / 2 and so on. Low-pressure fluid in addition to direct welded steel pipe used to transport fluid, but also a large number of low-pressure fluid used for welding galvanized steel pipe with the original tube.alloy pipe

Longitudinal production process is simple, high efficiency, low cost, rapid development. Spiral welded pipe strength is generally higher than the Longitudinal, can narrow the larger diameter pipe billet production, you can also use the same width of the billet production of different pipe diameters. But with the same length of straight seam pipe compared to the weld length of 30 to 100%, and lower production rate.
Therefore, the smaller diameter pipe actually use straight seam welded, large diameter spiral welded pipe is mostly used.carbon steel pipe

Also known as welded steel pipe, steel plate or strip is formed through the coiled welded steel pipe after,alloy pipe
. Welded steel pipe manufacturing process is simple, efficient, and more varieties of different specifications, equipment, less capital, but the general strength of less than seamless. Since the 1930s, with the quality of the rapid development of strip rolling and welding and inspection technology advances continue to improve the quality of welds, welded steel pipe specifications increasing and more and more areas instead of non-pipe joints. Seam welded steel pipe according to the form is divided into Longitudinal and spiral welded pipe.