Advantages of LSAW steel pipe

Date:2024-04-30Tags:LSAW steel pipe, ERW pipes,steel, SSAW steel pipes, seamless steel pipes

LSAW steel pipe refers to a steel pipe that uses thermal decomposition welding method to continuously apply color steel strips on the inner and outer walls. It is a very important steel pipe product. In the construction of long-distance pipelines, steel pipes account for a large proportion. Under normal circumstances, pipeline investment accounts for 35% to 40% of the total project investment. How to choose a reasonable price and excellent pipeline performance are particularly important. Reasonable selection has a very important impact on saving investment in pipeline construction and facilitating the construction and safe operation of the pipeline system. The advantages of LSAW steel pipes enable it to be widely used in its unique long-distance oil and gas pipelines. The following is a detailed introduction to the demand market status and industry competition landscape analysis of LSAW steel pipes, as well as ideas on how to gain advantages in future competition.

LSAW steel pipe

Current market demand for LSAW steel pipes

1. Demand has increased significantly. In recent years, the consumption of 7-50mm thick LSAW steel pipes has shown a comprehensive and continuous upward trend, especially now that crude oil, natural gas, nuclear power and coal have seized the market and China's economy has been upgraded to a service industry structure. Supported by the straight seam submerged arc welded pipe (LSAW) )'s consumption status has also seen a significant improvement and upgrade compared with the past, and the growth range has lasted for nearly two months in September.


2. The technical content is getting higher and higher. Steel pipes are the main material products for the construction of important infrastructure. All walks of life have put forward higher requirements for the technical performance of purchased steel pipe products, such as special pressure resistance requirements and low temperature strain requirements. This is undoubtedly Higher requirements have been put forward for the technical content and quality of longitudinal submerged arc welded pipes.


3. SSAW steel pipes have been used in gas transmission pipelines for many years, but their accident probability is higher than that of LSAW steel pipes, and their wall thickness is limited by production conditions. So far, their proportion is small and is decreasing day by day. At present, most of the international long-distance oil and gas pipelines, especially those with high pressure and large diameter, use LSAW steel pipes, accounting for about 57-80%.


4. In order to improve pipeline transportation capacity and ensure safety, submarine pipelines are developing towards thicker walls, so submarine pipelines mostly use LSAW steel pipes. In onshore Category III and IV areas, safety requirements are high and sufficient safety factors must be ensured. Longitudinal submerged arc welded steel pipes (LSAW steel pipes) should be used in low-temperature areas, high-drop areas, and pipelines with harsh service conditions. In the past ten years, LSAW steel pipes have large production capacity and good quality, and most transportation pipes have used LSAW steel pipes. Except for some countries such as Italy and Canada, spiral pipes are no longer required as delivery pipes, but are only required as low-pressure pipes.


5. UEO straight-seam pipes are used in large-diameter submarine pipelines. Among all submarine pipelines (diameters from 2" to 34'), UEO straight-seam pipes account for 63%, and the rest are seamless steel pipes and ERW steel pipes. Submarine pipelines have so far There is no record of spiral pipes being used in offshore oilfield projects in China.


The advantages of LSAW steel pipe are:

① The base material of straight seam welded pipe (LSAW) is a single controlled rolled steel plate, which is isotropic and can be 100% non-destructive;
② The straight seam welded pipe (LSAW) has a good stress state after forming. Due to the mechanical diameter expansion, the internal stress can be internalized and the geometric and dimensional accuracy of the steel pipe can be improved;
③The inherent quality of straight seam welded pipe (LSAW) is good because it is welded on a flat surface, so welding conditions, automatic tracking, and non-destructive testing are easy to carry out, which results in low weld height and internal and external welds;
④Straight seam welded pipe (LSAW) wall thickness range is wide, generally 6 to 25 mm, and the thickness can be up to 45 mm;
⑤ Straight seam welded pipe (LSAW) has good bending resistance and flattening resistance;
⑥The weld seam of straight seam welded pipe (LSAW) is 60% shorter than that of spiral welded pipe, and the probability of weld seam defects is lower;


For LSAW steel pipes, our company's huge production capacity, mature technology, stable quality, and abundant resource advantages enable us to take advantage of the competition in the longitudinal submerged arc welded pipe industry. If necessary, you are welcome to contact us for inquiries at any time.

 

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