Supplies are categorized into three types based on usage: Supplies based on mechanical properties, supplies based on chemical composition and mechanical properties, and supplies based on hydrostatic testing. If used to withstand liquid pressure, hydrostatic testing is also required. These supplies are further divided into general-purpose (used for water and gas pipelines, structural components, and mechanical parts) and specialized applications (used for boilers, geological exploration, bearings, acid resistance, etc.).
Seamless steel pipes have a wide range of applications. General-purpose seamless steel pipes are typically made from carbon structural steel, low-alloy structural steel, or alloy structural steel, with high production volumes. They are primarily used as pipelines for conveying fluids or structural components. They are supplied in three categories based on their application: supplied according to chemical composition and mechanical properties; supplied according to mechanical properties; and supplied according to hydrostatic test. If used to bear liquid pressure, a hydrostatic test is also required. Seamless steel pipes have a hollow cross-section and are extensively used as pipelines for conveying fluids, such as those transporting oil, natural gas, coal gas, water, and certain solid materials.
Seamless pipes come in various types, including boiler pipes, chemical and power industry pipes, geological seamless steel pipes, and oilfield pipes. Compared to solid steel products like round bars, seamless steel pipes offer several advantages.
Handan section material market prices saw a narrow decline. According to the market monitoring by the Research Center for Iron and Steel Information of Lang Steel: The current price of 25# I-beams produced in Tangshan is 4010 yuan, down 10 yuan; the price of 16# channel steel produced in Tangshan is 3940 yuan, down 20 yuan; the price of 10# channel steel produced in Wuji is 3840 yuan, down 30 yuan; the price of 5# angle steel produced in Tangshan is 4050 yuan, down 20 yuan (all prices include tax and are per ton). Affected by the decline in costs, Handan section material market prices fell, and after the decline, local resources saw some improvement in transactions, with a rebound of 10 yuan in the market. Other resources experienced poor sales. In the afternoon, Wu'an City issued enhanced emergency control measures for steel and coking plants, requiring all sintering machines to be shut down, with only one blast furnace maintaining normal production, while the rest are to be emergency shut down or cooled down due to procurement.
Coking enterprises extend coking time to over 36 hours. Speculation on production cuts continues, with the futures market配合 bottoming out and rebounding slightly in the afternoon, but the rebar closed down 40 points to below 3700. Billet prices fell 20 yuan to 3400 yuan, and market sentiment remains pessimistic. It is expected that the price of profiles will continue to be weak tomorrow. On the 30th, the domestic seamless tube market price stabilized with slight increases, small and medium-sized tube resources are scarce, and some specifications are in short supply.
Lange Iron and Steel Cloud Commerce Platform data shows: In key cities across China today, the average price for seamless steel tubes with specifications of 108*4.5mm is 4859 yuan, up 3 yuan from the previous trading day.
Prices in Beijing, Taiyuan, and Cangzhou have risen by 30-50 yuan, with the current market price ranging from 4,600 to 4,650 yuan. In the seamless tube sector, overall prices remain strong, primarily due to environmental protection production restrictions affecting tube mill production schedules. The inventory of non-mainstream resources in the downstream market was low in the early stage, as evidenced by the recent stockout of the 133 series in some markets. This morning, the main螺纹in the black series gradually strengthened, but support at higher levels was insufficient, and prices fell again in the afternoon. Large-scale traders in leading cities performed well in terms of sales, but demand in some areas remained weak, with prices holding firm. Actual sizes of 20# seamless steel tubes, commonly used specifications such as 76, 89, 159, and 219mm diameters, are in short supply, and delivery speeds have slowed.
