20# 219*8 fertilizer equipment 6479 seamless pipe for sale at low price

材质：

20#

规格：

219*8

标准：

GB6479

Seamless steel pipes have hollow sections and are widely used as pipelines for transporting fluids, such as pipelines for transporting oil, natural gas, coal gas, water and certain solid materials. Compared with solid steel materials such as round steel, steel pipes are lighter in weight when subjected to the same bending and torsional strength. They are an economical cross-section steel and are widely used in the manufacture of structural parts and mechanical parts, such as oil drill pipes, automobile transmission shafts, and bicycles. The use of steel pipes to manufacture ring-shaped parts such as steel frames and steel scaffolding used in construction can improve material utilization, simplify the manufacturing process, save materials and processing time, such as rolling bearing rings, jack sets, etc., which are currently widely manufactured with steel pipes. Steel pipes are also an indispensable material for various conventional weapons. Gun barrels, gun barrels, etc. are all made of steel pipes. Steel pipes can be divided into round pipes and special-shaped pipes according to different cross-sectional area shapes. Since the circle area is the largest when the circumferences are equal, more fluid can be transported with circular tubes. In addition, the circular cross section is relatively uniformly stressed when subjected to internal or external radial pressure. Therefore, the vast majority of steel pipes are round pipes. However, round tubes also have certain limitations. For example, under the condition of plane bending, round tubes are not as strong as square and rectangular tubes in bending strength. Square and rectangular tubes are commonly used in some agricultural machinery frames, steel and wood furniture, etc. Special-shaped steel pipes with other cross-sectional shapes are needed according to different uses/\\~\\\\\
Seamless steel pipe implementation standards (national standards)
【】Structural seamless pipes (/) are used Seamless steel pipes for general structural mechanical structures.
【】Seamless steel pipes for fluid transportation (/) are general seamless steel pipes used to transport fluids such as water, oil, and gas. / (Seamless steel pipe for conveying fluids) is mainly used for conveying fluid pipelines in engineering and large-scale equipment. The representative materials (grades) are, etc.
【】Seamless steel pipe for low and medium pressure boilers () is a high-quality carbon structural steel used to manufacture superheated steam pipes, boiling water pipes for low and medium pressure boilers of various structures, superheated steam pipes and arch brick pipes for locomotive boilers. Hot rolled and cold drawn (rolled) seamless steel pipes. (Seamless steel pipes for low and medium pressure boilers). Mainly used in pipelines for conveying low and medium pressure fluids in industrial boilers and domestic boilers. The representative material is steel.
【】Seamless steel pipes for high-pressure boilers () are high-quality carbon steel, alloy steel and stainless heat-resistant steel seamless steel pipes used for the heating surfaces of water tube boilers with high pressures and above. (Seamless steel pipes for high-pressure boilers). It is mainly used for high temperature and high pressure resistant fluid transport headers and pipelines in power plants and nuclear power plant boilers. Represents the material as equal.
【】High-pressure seamless steel pipes for fertilizer equipment () are high-quality carbon structural steel and alloy steel seamless steel pipes suitable for chemical equipment and pipelines with working temperatures of ~°C and working pressures of ~°C. (Seamless steel pipe for high-pressure fertilizer equipment). Mainly used in fertilizer equipment to transport high temperature and high pressure fluid pipelines. The representative materials are, etc.
【】Seamless steel pipe for petroleum cracking () is a seamless steel pipe suitable for furnace tubes, heat exchangers and pipelines in petroleum refineries. (Seamless steel pipe for petroleum cracking). Mainly used in boilers, heat exchangers and pipelines for transporting fluids in petroleum refineries. Its representative materials are,
Our company mainly produces seamless steel pipes, spiral steel pipes, alloy steel pipes, anti-corrosion steel pipes, and straight seam steel pipes
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