Steel pipes are widely used in multiple industries due to their high strength

Steel pipes are widely used in multiple industries due to their high strength, pressure resistance, corrosion resistance (especially stainless steel and alloy steel pipes), and good processing performance. According to publicly available information, its main scope of use can be summarized as follows: 1、 Main usage scope classified by purpose Pipe for pipelines Transporting fluid media such as water, gas, steam, oil, natural gas, etc Agricultural irrigation faucets with pipes, sprinkler irrigation pipes Used for thermal equipment Boiler pipes: such as boiling water pipes, superheated steam pipes, arch brick pipes, etc. (suitable for medium and low pressure boilers and high temperature and high pressure boilers) Locomotive boiler pipe Mechanical industry pipes Automotive components: such as half axles, axles, tractor structural components, oil coolers, shock absorber oil storage pipes, driveshafts, exhaust pipes, etc Aviation structural pipes: circular pipes, elliptical pipes, flat elliptical pipes, etc Transformer tubes, bearing tubes Pipe for petroleum geological drilling Oil drill pipe, casing, tubing, core pipe, drill bit, etc Chemical industry pipes Heat exchangers, pipelines, high-pressure reaction tubes, etc. in chemical equipment Acid resistant, alkali resistant, and high-temperature resistant medium transportation Other specialized fields Container tube: such as high-pressure gas cylinder Medical equipment: such as injection needles, surgical instruments Precision components such as instruments, watch cases, etc 2、 Typical application scenarios classified by material Carbon steel pipe (such as 45 steel) Used for general structural components, fluid transportation, mechanical parts (such as automotive shafts) Stainless steel pipes (such as 304, 316) Food processing equipment, chemical containers, pharmaceuticals, kitchen utensils, building decoration Strong corrosive environments such as seawater and acidic media (316 has better corrosion resistance due to its molybdenum content) Alloy steel pipe High temperature and high pressure environment: such as power plant boilers, nuclear power pipelines, and petroleum cracking units Galvanized steel pipe Building water supply and drainage (old style), fire protection, electricity, highway guardrails, agricultural machinery, etc Attention: Cold galvanized pipes are no longer used in water supply systems, while hot-dip galvanized pipes are still used in non potable water areas 3、 Application differences based on process and structural characteristics Seamless steel pipe Higher pressure resistance, suitable for high-pressure fluids, high-temperature working conditions, and mechanical structural components (such as bearings and automotive half shafts) Welded steel pipe (welded pipe) Commonly used for medium and low pressure fluid transportation (such as water and gas), building supports, and ordinary structures Cold drawn/Cold rolled High dimensional accuracy and smooth surface, used in hydraulic systems, aerospace, and precision machinery