Explore our high-performance welded and drawn 304/316L/409L tubing portfolio engineered for industrial, structural, and sanitary applications worldwide.
Unlocking total cost optimization, metallurgical stability, and supply chain resiliency for international B2B buyers seeking 1/2" to 2" OD 304 stainless steel tubing.
Global Tier-1 manufacturers demand tight outside diameter (OD) and wall thickness (WT) consistency. Our mill utilizes inline laser micrometer monitoring to lock OD tolerances within ±0.05 mm, ensuring seamless automated CNC bending and robotic assembly without mechanical binding.
Grade 304 (UNS S30400 / 1.4301) relies on an optimal 18% Chromium and 8% Nickel matrix. We source prime coils exclusively from POSCO, TISCO, and Baosteel, verifying carbon content under 0.07% to prevent intergranular precipitation during welding.
High-frequency plasma and TIG welding process integrated with inner nitrogen gas shielding eliminates internal oxidation (black seam defect). Tubes undergo 100% online eddy-current flaw detection and hydraulic pressure verification.
Tailored 304/316L stainless steel tubing solutions engineered for structural strength, sanitary hygiene, heat resistance, and aesthetic perfection.
Replacing traditional plastic-coated pipes, 1" and 1.5" OD 304 stainless steel tubing delivers cleanroom-compliant structural integrity. It resists daily chemical washdowns, oil spills, and high load-bearing stresses without surface peeling or particulate contamination.
Combines 409L and 304 grades engineered for thermal cycling (up to 700°C) and vibrational fatigue. High ductility allows radical 90° CNC rotary draw bending without micro-cracking at the seam, essential for exhaust mufflers and seating frames.
Formulated with Ra ≤ 0.4 µm electro-polished surface finishes. Free from micro-pores, our 304 and 316L tubes prevent bacterial adhesion, providing chemical resistance against hospital-grade chlorine disinfectants.
ASTM A554 ornamental tubing available in 180# satin brush, 400# gloss, and 600# mirror polish, alongside advanced PVD titanium coatings (Rose Gold, Champagne, Black). Guarantees flawless visual aesthetics for luxury interior architecture.
Comprehensive engineering data tables outlining mechanical properties, dimensional tolerances, and international compliance cross-references.
| Steel Grade | Standard Ref. | Tensile (MPa) | Yield (MPa) | Elongation (%) | PREN Rating | Primary Industrial Use |
|---|---|---|---|---|---|---|
| AISI 304 (1.4301) | ASTM A554 / A269 | ≥ 515 | ≥ 205 | ≥ 40% | 18.0 - 20.0 | General Structural, Furniture, Appliance, Grab Bars |
| AISI 304L (1.4307) | ASTM A249 / A554 | ≥ 485 | ≥ 170 | ≥ 40% | 18.0 - 20.0 | Heavy Welding Assemblies, Exhaust Manifolds |
| AISI 316L (1.4404) | ASTM A249 / A269 | ≥ 485 | ≥ 170 | ≥ 40% | 23.0 - 25.0 | Marine Hardware, Coastal Showers, Chemical Transport |
| AISI 409L (1.4512) | ASTM A268 / OEM Spec | ≥ 380 | ≥ 175 | ≥ 25% | 10.5 - 11.7 | Automotive Mufflers, Thermal Heat Shields |
| AISI 201 (High Cu) | ASTM A554 Commercial | ≥ 520 | ≥ 275 | ≥ 35% | 9.5 - 11.0 | Indoor Furniture, Decorative Household Storage Racks |
Providing seamless international trade compliance, custom secondary fabrication, and robust export protective packaging for buyers across North America, Europe, Asia-Pacific, and the Middle East.
Every single batch is shipped with EN 10204 3.1 Mill Test Certificates detailing heat number chemical heat analysis, tensile strength, yield point, elongation, hardness, flattening test, and eddy-current non-destructive testing results.
Eliminate secondary factory costs. We provide precision CNC cut-to-length (±0.2mm), rotary mandrel bending, end flaring, necking, slot punching, laser cutting, and chamfer deburring so components arrive assembly-ready.
Tubes are individually protective poly-sleeved to eliminate surface scratching, bound into tight hexagonal bundles, wrapped in woven water-proof plastic sheet, and packed into sturdy fumigated wooden crates or steel frames for ocean freight transit.
Authoritative technical answers compiled by our chief metallurgical engineers and quality assurance directors.
ASTM A554 governs welded stainless steel mechanical and ornamental tubing where visual appearance, precise dimensions, and structural yield strength are paramount. ASTM A249 covers welded austenitic steel tubes specifically designed for boilers, superheaters, heat-exchangers, and condenser service requiring rigorous hydrostatic/pneumatic pressure testing. ASTM A269 covers nominal-wall-thickness tubing for general corrosion-resisting and low- or high-temperature service (often seamless or cold-worked welded). Our mill produces fully certified tubing compliant with all three standards based on your purchase specification.
Weld seam failure during rotary draw bending occurs due to excessive seam hardness or micro-porosity. We mitigate this by utilizing high-purity argon/nitrogen inner gas purging during TIG/plasma welding, followed by inline weld seam planishing and bright annealing at 1050°C. This homogenizes the austenitic grain structure, restoring elongation up to ≥40%, allowing bending center-line radii (CLR) down to 1.5D without cracking or wall wrinkling.
Grade 201 substitutes manganese and nitrogen for nickel to lower cost, resulting in lower corrosion resistance and higher work-hardening rates. Grade 304 contains 18% Chromium and 8% Nickel, creating a self-healing passive Chromium Oxide ($Cr_2O_3$) film. In humid, urban, or mild industrial environments, 304 prevents rust pitting and stress corrosion cracking (SCC), extending total service lifespan by over 300% compared to 201.
Our standard MOQ for stock outer diameters (e.g., 1/2", 3/4", 1", 1.5", 2" OD) in 304 grade is 500 kg per size. Custom special profiles (oval, D-shape, slotted) or unique wall thicknesses carry a 1,000 kg MOQ. Standard production lead time is 15 days from deposit confirmation and sample approval, backed by 43 operational mill lines producing over 900 metric tons monthly.
Explore custom profiles, CNC precision machined components, gas grill tubes, and specialized structural designs manufactured to exact specifications.
