Explore our top-tier ASTM A554/A269 compliant welded stainless steel pipes designed for medical, automotive, decorative, and industrial applications.
An authoritative engineering overview of chemical composition, phase stability, mechanical properties, and structural resistance under diverse operational environments.
Technical Insight: AISI 304 (UNS S30400 / EN 1.4301) represents the premier austenitic chromium-nickel stainless steel grade. Its superior corrosion resistance and cold-working ductility stem from a precisely balanced chemical matrix, containing a minimum of 18% Chromium and 8% Nickel. Internal shielding with high-purity argon/nitrogen during automated TIG/Laser welding ensures 100% seam integrity with zero intergranular oxidation.
| Elemental Parameter / Mechanical Test | Standard SS 304 (ASTM A554/A269) | Low-Carbon SS 304L Grade | Engineering Significance |
|---|---|---|---|
| Chromium (Cr) Content | 17.50% – 19.50% | 17.50% – 19.50% | Forms a self-healing Cr₂O₃ passive oxide film protecting against atmospheric oxygen. |
| Nickel (Ni) Content | 8.00% – 10.50% | 8.00% – 12.00% | Stabilizes the face-centered cubic (FCC) austenitic structure for high toughness. |
| Carbon (C) Max Limit | ≤ 0.07% | ≤ 0.03% | 304L prevents chromium carbide precipitation in the weld Heat-Affected Zone (HAZ). |
| Tensile Strength (Rm) | ≥ 515 MPa (75 ksi) | ≥ 485 MPa (70 ksi) | Ensures high structural load-bearing capability in architectural and industrial framing. |
| Yield Strength (0.2% Proof) | ≥ 205 MPa (30 ksi) | ≥ 170 MPa (25 ksi) | Dictates maximum elastic deformation before permanent shaping during bending operations. |
| Elongation at Break (A5) | ≥ 40 % | ≥ 40 % | Provides outstanding ductility for deep mandrel bending, flaring, necking, and hydroforming. |
How Foshan’s integrated steel processing hub delivers unparalleled cost efficiency, rapid prototyping, and massive scale to international procurement teams.
Direct procurement of prime stainless hot and cold rolled coils from global steel giants (TISCO, Posco, Baosteel) minimizes intermediate markups and guarantees precise chemical heat-traceability.
Equipped with online eddy-current flaw detection, laser dimensional monitoring, hydraulic flattening, reverse flaring, and salt spray testing chambers ensuring 100% compliance with international standards.
Eliminate tooling expenses for custom shapes. Our massive tooling inventory covers square, rectangular, oval, elliptical, triangular, and slotted profile configurations with instant setup readiness.
Beyond raw mill lengths: internal CNC laser cutting, mandrel tube bending, drilling, punching, end-reduction, flaring, surface polishing (up to 600# Mirror), and PVD titanium color deposition.
From medical-grade equipment framework to automotive exhaust systems and architectural structures, our SS 304 tubing exceeds sector-specific compliance codes.
Passivated, non-porous SS 304 precision tubing designed for hospital bed frames, IV poles, and safety grab bars. Smooth surface finish (Ra ≤ 0.4 µm) eliminates bacterial harborage and tolerates harsh medical disinfectants.
Formable 304 and 409L structural tubing engineered for exhaust manifolds, muffler tailpipes, bus handrails, and seat frames. Superior thermal fatigue strength resists high-temperature vibration and road salt corrosion.
ASTM A554 decorative round, square, and slotted tubes engineered for high-end glass railings, facade support frames, and luxury furniture. Available in Satin 240#/320#, 600# Mirror, and PVD Rose Gold/Black Titanium.
Low TIR (Total Indicator Runout) precision tubing ideal for conveyor roller shells, food-grade processing fluid lines, and bathroom hardware substrates, guaranteeing flawless chrome plating adhesion.
Empowering international purchasing directors with objective empirical data to optimize material costs without compromising structural reliability.
Cost-Optimized / Indoor Only
Universal Industrial & Decorative
Marine & Chemical Grade
How smart manufacturing, eco-friendly PVD coatings, and tight-tolerance laser fabrication are redefining global stainless steel tube procurement.
Environmental regulations are pushing global markets away from traditional hexavalent chrome electroplating toward Physical Vapor Deposition (PVD) vacuum coating, offering zero toxic effluent and superior abrasion resistance.
High-power continuous wave (CW) fiber laser welding has replaced traditional TIG in high-precision runs. Laser welding yields a minimal Heat-Affected Zone (HAZ), enabling smooth internal bead planishing.
Overseas OEM buyers increasingly request fully fabricated, ready-to-assemble subcomponents (cut, bent, laser slotted, hardware riveted) shipped directly to assembly lines, cutting local labor overhead.
Modern buyers demand complete material mill test certificates (MTC per EN 10204 3.1) linked directly to coil heat numbers, paired with carbon footprint auditing for sustainable global supply chains.
Clear, engineering-backed answers addressing material selection, dimensional tolerances, fabrication challenges, and international shipping logistics.
Explore our custom OEM/ODM shapes, sanitary precision tubes, and fabricated structural solutions for global distribution.
