Explore our foundational range of welding rods, electrodes, and core solid wires meeting absolute ISO and AWS requirements.
Within the spectrum of welding consumables, the designation ER316L holds a position of critical engineering reliance. Optimized for Gas Tungsten Arc Welding (GTAW / TIG) and Gas Metal Arc Welding (GMAW / MIG) processes, this low-carbon filler rod is designed to unite molybdenum-bearing austenitic alloys. The "L" designator is of paramount importance—limiting carbon content to ≤ 0.03% radically minimizes carbide precipitation at grain boundaries during the heat cycle, avoiding sensitization and subsequent intergranular corrosion.
Critical Advantage: The addition of 2.0% to 3.0% Molybdenum (Mo) significantly boosts the Pitting Resistance Equivalent Number (PREN), providing resistance against localized chloride pitting and crevice corrosion compared to 304L/ER308L grades.
Wulian Yuxin Hardware Equipment Co., Ltd. controls the metallurgy, ensuring that the delta ferrite content remains strictly within 3 to 8 FN (Ferrite Number). This precise window prevents hot-cracking while preserving mechanical properties and corrosion-resistant integrity in high-temperature or cryogenic environments.
| Alloy Class | C % | Cr % | Ni % | Mo % | Mn % | Si % | Tensile Strength (MPa) | Impact Energy (J) |
|---|---|---|---|---|---|---|---|---|
| ER316L TIG | ≤ 0.03 | 18.5 - 20.0 | 11.0 - 14.0 | 2.0 - 3.0 | 1.0 - 2.5 | 0.30 - 0.65 | ≥ 520 | ≥ 70 (-196°C) |
| ER308L TIG | ≤ 0.03 | 19.5 - 22.0 | 9.0 - 11.0 | - | 1.0 - 2.5 | 0.30 - 0.65 | ≥ 510 | ≥ 80 (-196°C) |
| ER70S-6 MIG | 0.06 - 0.15 | - | - | - | 1.4 - 1.85 | 0.80 - 1.15 | ≥ 480 | ≥ 47 (-30°C) |
Founded in 2004 in Wulian, Rizhao City, Shandong Province, Wulian Yuxin Hardware Equipment Co., Ltd. has expanded from a local workshop into an international manufacturer of premium welding consumables. Our 15,000-square-meter facility houses modern drawing lines, automated chemical cleaning baths, and electronic spooling machines that guarantee high consistency in wire diameter, surface finish, and winding structure.
Our transition to Factory 4.0 architecture integrates real-time laser monitoring systems that evaluate the tolerance of the drawing lines. Our diameter variance is managed to within ±0.01mm, a standard 30% stricter than AWS norms, which eliminates wire-feeding friction, avoids micro-arcing in contact tips, and delivers a stable, spatter-free arc in high-speed automated processes.
Strategic Capacity: Operating with an annual production capacity of 3,000 tons, our factory serves heavy industrial clients across five continents, ensuring supply security during volatile market conditions.
How Wulian Yuxin is adapting its engineering to accommodate modern automation, robotic welding, and decarbonization pressures.
With global manufacturers pivoting to robotic welding stations, our R&D is focused on modifying wire stiffness and torsional cast. This guarantees smooth feeding through 10-meter-long conduit cables, eliminating bird-nesting issues at fast wire feed speeds exceeding 15 m/min.
Occupational safety is a growing regulatory priority. Wulian Yuxin is engineering advanced surface cleaning formulations that minimize chromium volatilization during GTAW operations, decreasing hexavalent chromium generation by up to 25% without compromising wetting characteristics.
Responding to global ESG compliance, we are rolling out 100% recyclable cardboard and steel wire spools. This system removes plastic disposal surcharges in European markets while safeguarding the wire from ambient moisture through vacuum-sealed foil layers.
ER316L filler rods are vital for critical infrastructure. Wulian Yuxin provides customized chemical formulations for specific industries.
Provides resistance to brackish water corrosion. Ideal for marine piping, desalination valves, and structural offshore welds exposed to spray zones.
Withstands high sulfur and chloride loads at elevated temperatures. Our low-carbon ER316L prevents sulfur stress cracking in refining vessels.
Ensures ultra-smooth, crevice-free welds that prevent microbial accumulation. Perfect for chemical agitation mixers and dairy processing conduits.
Offers excellent notch toughness at sub-zero temperatures. Used in LNG storage tank outer piping structures down to -196°C.
Observe the combination of modern equipment, clean workshop standards, and practical industrial cases.
Navigating global supply chain regulations demands more than excellent products; it requires thorough compliance documentation. Every batch of Wulian Yuxin ER316L filler rods is traceable back to the raw steel heat melt. We provide EN 10204 3.1 Mill Test Certificates (MTC) stating the chemical analysis, mechanical property verification, and ferrite number validations.
Our products comply with ISO 9001:2015 quality guidelines and carry the CE Mark, confirming suitability for European structural assemblies under EN 1090. In addition, our international logistics center provides customized container packaging, moisture-barrier wrapping, and custom port declarations out of Qingdao Port, minimizing turnaround times.
Strategic Localization: We partner with distribution centers in Germany, Vietnam, Brazil, and South Africa to supply regional stock holdings, shortening delivery timelines from weeks to days.
For industrial purchasers, sourcing from China requires managing logistics, customs compliance, and supply chain consistency. Wulian Yuxin addresses these challenges through structured contract options and dedicated shipping channels. We offer flexible FOB, CIF, and DDP shipping configurations, coordinating with premier freight carriers to secure competitive container rates.
Additionally, we offer multi-grade consolidation options. If a project requires ER316L filler rods alongside ER70S-6 structural MIG wires or E71T-1C flux-cored wire, we consolidate the shipment in a single container. This reduces shipping overheads, simplifies terminal inspections, and eases receiving logistics at your warehouse.
Anti-Rust Packaging: All rod products are packed in heavy-duty cardboard canisters, wrapped in anti-humidity plastic sleeves, and secured in sturdy wooden crates to prevent damage during sea transport.
Expert metallurgical insights into working with ER316L filler rods and welding consumables.
Select specialized wires and structural electrodes from our plant in Rizhao, Shandong.
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