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PRODUCT DESCRIPTION
Name:AISI 309 Stainless Steel Pipe&Tube
Grade:16Cr23Ni13;SUH 309;STR 309;ASTM 309;S30900;X15CrNiSi 20-12;1.4828
Technique:ERW
Section Shape:Round/Square/Rectangular/Hexagonal
Thickness:0.3mm-30mm
Diameter:6mm-630mm
Length:1000mm-6000mm or custom
Sample:Support
Origin：China foshan
Payment Term:T/T;L/C;WesternUnion;Paypal
Application:Food processing, textile operations, breweries, water treatment plants, oil and gas processing, fertilizers and pesticides, chemical applications, construction, pharmaceuticals, automotive parts
309 stainless steel pipe adopts high alloy design (Cr 19%-23%, Ni 12%-15%), with excellent high temperature oxidation resistance and corrosion resistance as the core advantages, and its performance far exceeds that of traditional 0Cr19Ni9 stainless steel pipe. Its high chromium and nickel content can quickly generate a dense chromium oxide protective layer under high temperature environment (≤800℃), effectively resisting sulfidation, carburization and oxidation corrosion. At the same time, by adding trace elements such as molybdenum and titanium, it significantly improves the resistance to chloride stress corrosion and intergranular corrosion, and is suitable for extreme temperature and corrosive medium coexistence scenarios.
Through 1050-1150℃ solution heat treatment and precision cold drawing/rolling process, a uniform single-phase austenite structure is formed inside the steel pipe, which has both high strength (tensile strength ≥515MPa) and excellent ductility (elongation ≥35%), supports welding, cold bending and flaring processing, and the surface finish can reach Ra≤0.8μm. The products comply with international standards such as ASTM A312 and EN 10216, and meet the stringent requirements of high-temperature industrial pipelines for material thermal stability, creep resistance and long-term service reliability.
309 stainless steel pipes are an ideal choice for high-temperature fluid delivery systems in the energy, chemical and heavy manufacturing fields due to their high temperature resistance and corrosion resistance. In high-temperature furnace heat exchange tubes, industrial kiln flue gas emission pipes and other scenarios, their anti-oxidation performance can withstand continuous 800°C working conditions, avoiding the problem of thinning of the pipe wall due to oxidation peeling, and the service life is 2-3 times longer than that of conventional 304 materials.
This product is widely used in strong acid medium delivery pipelines, nitric acid concentration equipment heat exchange tubes and chlor-alkali industrial reactor pipelines in the chemical industry. The molybdenum element cooperates with the chromium-nickel matrix to effectively inhibit pitting and stress corrosion cracking, ensuring safe operation in high-salt and high-acid environments. At the same time, in components such as heat treatment equipment radiation tubes, engine exhaust manifolds and incinerator high-temperature gas ducts, the thermal fatigue resistance of 309 stainless steel pipes can adapt to frequent hot and cold cycles and reduce the risk of deformation and cracking.
Through precision molding technology and strict quality inspection procedures, the products can be customized with different wall thicknesses, diameters and surface conditions (bright surface/pickling), adapting to diverse needs such as high-pressure fluid transmission, structural support and high-temperature sealing connections, providing high-reliability pipeline solutions for petroleum refining, nuclear power equipment and environmental protection projects.
PRODUCT SHOW
PRODUCTION PROCESS
Raw material preparation→ Open roll→ leveing → welding → cooling →Fixed cut→ deburring and cleaning → inspection and testing → packaging
WHY CHOOSE US?
one of the largest stainless steel pipe exporters in china.
provide competitive prices
professional after-sales team.
fast and reliable delivery.
flexible payment methods include tt, lc, western union, moneygram and regular buyers' credit terms.
