According to big data calculations, the global steel pipe market is expected to account for $133.2 billion in 2024 and is expected to reach $229.7 billion by 2030, growing at a CAGR of 8.1% during the forecast period. Steel pipe is a cylindrical hollow structure mainly made of steel

Steel pipes are an important part of modern infrastructure and industrial systems.

Market dynamics:

Infrastructure construction:

With the increase of urbanization and industrialization, the demand for steel pipes in various fields such as construction, oil and gas, and water treatment is growing. This trend is driven by the durability, strength and versatility offered by steel pipes, making them an essential component of infrastructure projects ranging from pipes to structural frames. As a result, the market is witnessing a surge in infrastructure development, driven by rapidly evolving construction activities worldwide.

Challenges:

The threat mainly comes from alternative materials such as plastic, copper and aluminum pipe solutions. These alternatives have lower costs, better corrosion resistance and lower weight than traditional steel pipes. As the industry seeks more cost-effective and efficient solutions, the emergence of these materials remains an important factor for steel pipe manufacturers.

Opportunity: The growing automotive industry

With the increase in global automotive production, the demand for steel pipes and tubes for various applications such as exhaust systems, chassis and structural components is increasing. In addition, stringent emissions regulations are prompting automakers to opt for lightweight but durable materials such as steel, further boosting the market. This trend is expected to continue as the automotive industry expands, driving the growth of the steel pipe market.

Carbon steel as one of the most widely used steel, because of its low cost, good processing performance, moderate strength and other characteristics, is widely used in construction, machinery manufacturing, automotive industry and other fields.

In recent years, our company has adopted more energy-saving melting technology and environmentally friendly emission control measures in the production of carbon steel, which has improved the quality and production efficiency of steel. The production of carbon steel is developing in a more efficient and environmentally friendly direction.

In the future development of the enterprise, Tianjin carbon steel will pay more attention to the performance of carbon steel and environmental sustainable development. On the one hand, through the innovation of material science, the development of carbon steel varieties with higher strength, better corrosion resistance and lighter weight. On the other hand, combined with the concept of circular economy, pay attention to the recycling of resources, reduce the dependence on raw resources by improving the recycling rate and use ratio of scrap steel, and promote the green transformation of the steel industry.

The steel industry is facing persistent price pressure due to weak global demand and high Chinese exports. Experts suggest that only further production cuts and increased consumption, especially from China, can help stabilize prices. Domestic prices have also been affected, falling sharply since the beginning of the year.

India is recognized as the driver of global steel demand growth, and while global alloy production has fallen to its lowest monthly level in 2024, the steel industry does not expect domestic and global prices to ease anytime soon.

Industry experts say only a combination of further production cuts and increased Chinese consumption can help steel prices recover from here.

Spiral welded steel pipe refers to the steel strip or steel plate bending deformation into circular, square and other shapes and then welded into the surface of the joint steel pipe.

Spiral welded steel pipe common material: Q235A, Q23b,0Cr13, 1Cr17, 00Cr19Ni11, 1Cr18Ni9, 0Cr18Ni11Nb. Q345 L245 L290 X42 X46 X70 X80 Spiral welded steel pipe standard: GB/T9711.1-1997 (national standard, also called oil and natural gas industry delivery steel pipe technical conditions part I: A class steel pipe (up to now strict requirements have GB/ T9711.2-B steel pipe), API-5L (American Petroleum Association, also called pipeline steel pipe; It is divided into PSL1 and PSL2 levels), SY/T5040-92 (spiral seam submerged arc welded steel pipe for pile)

Spiral welded steel pipe production process is simple, high production efficiency, low cost, rapid development. The strength of spiral welded pipe is generally higher than that of straight seam welded pipe, and it can be used to produce larger welded pipe with narrower blank, or different welded pipe with different diameter with the same width blank. But compared with the straight seam pipe of the same length, the weld length increases by 30~100%, and the production speed is lower. Therefore, small diameter welded pipe mostly use straight seam welding, large diameter welded pipe mostly use spiral welding.

The site or warehouse of thermal insulation spiral steel pipe products should be chosen in a clean place with smooth drainage and away from factories and mines producing harmful gas or dust. After cutting into a single steel pipe, each batch of steel pipe head three to carry out a strict first inspection system, check the mechanical properties of the weld, chemical composition, melting condition, spiral steel pipe surface quality and non-destructive inspection, to ensure that the pipe making process qualified, before formally put into production. Spiral steel pipe production process is simple, high production efficiency, low cost, rapid development. Remove weeds and all debris from the site and keep the steel pipe clean. In the warehouse shall not be stacked with acid, alkali, salt, cement and other corrosive materials to steel pipe. After more than a month of spiral steel pipe, the problem finally appeared in full swing. An unnamed CISA official told China Business News that according to the most conservative estimates, 70 percent of the companies are either suspending production or limiting production. When the pipe is subjected to internal pressure, there are usually two main stresses on the pipe wall, namely the radial stress δY and the axial stress δX. The synthetic stress δ=δY(L / 4Sin2 α+cos2α)1/2 at the weld, where, α is the helix Angle of the spiral steel pipe weld.

The strength of spiral steel pipe is generally higher than that of straight seam welded pipe, and it can be used to produce welded pipe with larger diameter with narrower blank, or welded pipe with different diameter with the same width blank. The weld gap control device is used to ensure that the weld gap of spiral steel pipe meets the welding requirements, and the pipe diameter, staggered edge and weld gap are strictly controlled. American Lincoln welding machine is used for single wire or double wire submerged arc welding for internal and external welding, so as to obtain stable welding specifications. More than a month ago, the European Union decided to launch a countervail investigation into Chinese spiral steel pipes, and the United States followed suit. All this is directly related to the interests of more than 3000 spiral steel pipe manufacturers in China. Before this, the capacity of this field is mostly designed in accordance with export sales.

The strength of spiral steel pipe is generally higher than that of straight seam welded pipe, and the welded pipe with larger diameter can be produced with narrower blank.