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Do You Know about Welded Steel Pipes?

1. Welded steel pipe, also called welded pipe, is a steel pipe made by welding steel plates or steel strips after crimping. Welded steel pipes have simple production process, high production efficiency, many varieties and specifications, and less equipment, but their general strength is lower than seamless steel pipes. Since the 1930s, with the rapid development of high-quality strip continuous rolling production and the advancement of welding and inspection technology, the quality of welds has been continuously improved, and the variety and specifications of welded steel pipes have increased, and they have replaced non-products in more and more fields. Seam the steel pipe. Welded steel pipes are divided into straight seam welded pipes and spiral welded pipes according to the form of welds.


2. Welded steel pipe (GB/T3092) for low pressure fluid transportation is also called general welded pipe, commonly known as clarinet. It is a welded steel pipe for conveying water, gas, air, oil and heating steam and other generally lower pressure fluids and other purposes.


3. Galvanized welded steel pipe (GB/T3091) for low pressure fluid transportation is also called galvanized welded steel pipe, commonly known as white pipe. It is a hot-dip galvanized welded (furnace welded or electric welded) steel pipe used to transport water, gas, air oil, heating steam, warm water and other generally lower pressure fluids or other purposes.


4. Ordinary carbon steel wire casing (GB3640) is a steel pipe used to protect wires in electrical installation projects such as industrial and civil construction and installation of machinery and equipment.


5. Straight seam electric welded steel pipe (YB242) 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-walled pipe, transformer cooling oil pipe and so on.


6. Spiral seam submerged arc welded steel pipe (SY5036) for pressure-bearing fluid transportation is a hot-rolled steel strip as a tube blank, which is spirally formed at regular temperature and welded by double-sided submerged arc welding. It is used for spiral seam for pressure-bearing fluid transportation. Steel Pipe.


7. Spiral seam high-frequency welded steel pipe for pressure-bearing fluid transportation (SY5038) is a hot-rolled steel strip as a tube blank, which is spirally formed at regular temperature and welded by high-frequency lap welding. It is used for pressure-bearing fluid transportation. Seam high frequency welded steel pipe


8. Spiral seam submerged arc welded steel pipe (SY5037) for general low-pressure fluid transportation is made of hot-rolled steel strip coils as tube blanks, which are spirally formed at regular temperature and made by double-sided automatic submerged arc welding or single-sided welding. Submerged arc welded steel pipe for general low pressure fluid transportation such as gas, air and steam.


9. Spiral seam high-frequency welded steel pipe (SY5039) for general low-pressure fluid conveying is made of hot-rolled steel strip coils, which are spirally formed at regular temperature and welded by high-frequency lap welding. It is used for general low-pressure fluid conveying. Frequency welded steel pipe.


10. Spiral welded steel pipe for piles (SY5040-83) is made of hot-rolled steel strip coils as tube blanks, which are spirally formed at regular temperature and made by double-sided submerged arc welding or high-frequency welding. They are used in civil construction structures and docks. Steel pipes for foundation piles such as bridges, etc.