The development of the steel pipe industry has made great progress to adapt to market changes.

The development of steel pipe production technology began with the rise of bicycle manufacturing, the development of oil in the early 19th century, the manufacture of ships, boilers and aircraft during the two world wars, the manufacture of thermal power boilers after the Second World War, the development of the chemical industry and Oil and gas drilling and transportation, etc., have strongly promoted the development of the steel pipe industry in terms of variety, output and quality.

Steel pipes are not only used to transport fluids and powdered solids, exchange heat, make mechanical parts and containers, but are also an economical steel. The use of steel pipes to manufacture building structure grids, pillars and mechanical supports can reduce weight and save 20-40% of metal, and can realize mechanized construction. The use of steel pipes to manufacture highway bridges not only saves steel and simplifies construction, but also greatly reduces the area of the protective coating and saves investment and maintenance costs.

    Therefore, any other type of steel can not completely replace the steel pipe, but the steel pipe can replace some of the profiles and bars. Steel pipes have a great relationship with the development of the national economy and the improvement of the quality of human life, far superior to other steel products. From people's daily appliances, furniture, water supply and drainage, gas supply, ventilation and heating facilities to the manufacture of various agricultural machinery, the development of underground resources, guns, bullets, missiles, rockets, etc. used in national defense and aerospace, are inseparable from steel pipes.

    From a technical point of view, the steel pipe industry has made great progress in adjusting the product structure. This year, high value-added and high-tech products have grown rapidly. From the perspective of seamless pipes, oil-specific pipes, high-pressure boiler pipes, and gas cylinders. The hydraulic support pipes have been greatly improved. From the field of welded pipes, line pipes, J55 grade surface oil casings, medium and low pressure boiler welded pipes, high-strength weather-resistant building structure welded pipes, automobile drive shaft pipes, steel-plastic composite pipes and Large-diameter square rectangular tubes, precision profiled welded pipes, pneumatic hydraulic welded pipes, etc. have been greatly improved or developed, which is reflected in the improvement of economic benefits. Although the prices of upstream raw materials have increased by a large margin, enterprises are adapting to market changes and adjusting. A lot of work has been done on product structure and benchmarking potential, so that the market price of steel pipes is relatively stable, and corporate profits are still rising.

    The development of welded steel pipe technology is accompanied by advances in competition with seamless steel pipe products. Welded steel pipes in some areas will gradually replace seamless steel pipes, the key is the quality of the products and lower production costs. The improvement of the quality of welded steel pipe products mainly depends on three aspects of technological progress. The first is steel smelting technology, the second is the improvement of hot-rolled strip technology, and the third is the improvement of steel pipe manufacturing technology.