Explore our highly certified product lineup, designed to meet rigorous structural demands across global petrochemical, construction, and manufacturing industries.
ER308L stainless steel filler rod is the undisputed global benchmark for welding low-carbon 18Cr-8Ni stainless steels. Classified under AWS A5.9, the "L" designates extra-low carbon content (typically < 0.03%), which plays a critical role in inhibiting carbide precipitation at the grain boundaries during cooling. This metallurgical property prevents intergranular corrosion in challenging chemical and environmental exposures, ensuring high integrity weld joints.
Our proprietary drawing processes maintain a precise balance of Chromium (19.5% - 22.0%) and Nickel (9.0% - 11.0%), resulting in a robust Austenitic microstructure combined with a controlled Ferrite Number (FN 3-10). This specific Ferrite range acts as a defense system, mitigating hot cracking during solidification while retaining superb ductility and low-temperature impact toughness.
Pioneering Excellence in Welding Solutions Since 2004
Established in Wulian, Rizhao City, Shandong Province, Wulian Yuxin Hardware Equipment Co., Ltd. has grown from a locally excellent manufacturer to a globally recognized producer of premium welding consumables. With our own 15,000-square-meter production facility and advanced manufacturing equipment, we proudly maintain complete control over our production processes, ensuring consistent quality across our entire product range.
By focusing on raw material selection from leading Chinese steel mills and employing precise cold-drawing, chemical cleaning, and straightening technologies, we ensure that every ER308L filler rod maintains strict dimensional tolerance and stable chemical composition.
Analyzing Chinese manufacturing capacity within the international welding supply chain infrastructure.
China has transitioned from a high-volume manufacturing center to a high-end engineering hub for advanced welding alloys. As primary suppliers, OEM factories in Rizhao, Shandong, utilize advanced metallurgical setups to supply top-tier projects globally. Industrial demands from regional engineering associations, such as European fabrication workshops and Southeast Asian infrastructure projects, have driven Chinese factories to match or exceed strict western quality standards (such as AWS, EN ISO, and JIS).
With close localization to high-purity rod suppliers, Chinese factories ensure rapid procurement of raw materials, keeping production timelines short and price volatility to a minimum for long-term contract procurement.
Employing automated wire-drawing benches with real-time laser diameter monitoring ensures optimal tolerance levels (+0.01mm/-0.03mm), critical for smooth feeding in mechanized TIG/MIG welding operations.
Factories strictly conform to international ISO 9001 quality systems and CE marking rules, assuring compliance with European Pressure Equipment Directives (PED).
Understanding technological shifts in automated fabrication, robotic systems, and environmental compliance.
Modern fabrication relies heavily on robotic systems. ER308L filler rods and continuous spooled wires must have perfect straightness and customized helix settings to guarantee zero downtime in automated orbital tube welding systems.
Eliminating single-use plastic spools and shifting to recyclable paperboard or basket spools minimizes waste. Wulian Yuxin is investing heavily in eco-friendly packaging lines to support the sustainability goals of international distributors.
Minimizing trace element concentrations (like Phosphorus and Sulfur to under 0.015%) significantly improves resistance to hot-cracking under heavy restraint welding, which is increasingly required for nuclear power plant construction.
From pressure vessels to high-purity food environments: where performance meets demanding specifications.
Welding components for dairy processing units and brewery fermenters demands exceptionally smooth weld profiles. The high fluidity of our ER308L wire provides a flat weld bead shape, preventing crevices that could harbor bacterial growth.
High pressure piping loops and distillation columns operate under stressful cyclic loads. Using low-carbon ER308L ensures that the joint does not suffer from stress corrosion cracking (SCC) even under elevated thermal cycles.
For LNG (Liquefied Natural Gas) distribution and storage facilities, welds must maintain high toughness at temperatures down to -196°C. Wulian Yuxin's strict chemistry controls guarantee Charpy V-Notch impact values exceeding 60 Joules at cryogenic temperatures.
A peek inside our 15,000m² manufacturing facility. Complete transparency from raw wire rod to finished product.
Wire rods are drawn through sequential diamond dies under active cooling to prevent work-hardening anomalies.
Computer-guided winding drums ensure absolute parallel layer alignment, preventing tangles in commercial robotic setups.
Every rod passes through specialized ultrasonic washing stations to eliminate drawing lubricants and surface oxidation.
Optical emission spectrometers check every batch of raw wire before processing.
Dual-axis laser micrometers scan wires continuously during cold drawing steps.
Sample rods are run on welding setups to check arc stability and spatter rates.
All packaging receives custom heat number labels for raw material tracing.
Reference data sheet conforming to international AWS A5.9 / ASME SFA-5.9 standards.
| AWS Classification | C (%) | Mn (%) | Si (%) | Cr (%) | Ni (%) | Cu (%) | Ferrite Number |
|---|---|---|---|---|---|---|---|
| AWS A5.9 ER308L | ≤ 0.030 | 1.0 - 2.5 | 0.30 - 0.65 | 19.5 - 22.0 | 9.0 - 11.0 | ≤ 0.75 | 3 - 10 FN |
| Mechanical Property | Yield Strength (R_p0.2) | Tensile Strength (R_m) | Elongation (A_5) | Impact Toughness (ISO-V) |
|---|---|---|---|---|
| Typical Value | ≥ 380 MPa | ≥ 520 MPa | ≥ 35% | ≥ 70 J (-196°C) |
Wulian Yuxin is proactively adapting to the challenges of modern industrial transitions. Over the next five years, our engineering department will implement two major technological enhancements to our manufacturing framework:
Strategic logistics, supply chain diversification, and standard alignment across global trading hubs.
We offer comprehensive private branding options. From customized cardboard tubes for TIG rods (1kg, 5kg packages) to plastic spool colors and laser etching on the rods, we cover every branding detail according to target market needs.
We adapt chemistry specifications to your exact regional requirements. Whether your project needs lower copper limits for nuclear setups or elevated silicon levels (ER308LSi) for increased arc wetness, our engineers can tailor the mix.
Located close to Qingdao Port, Shandong Province, we offer quick sea transport options to major hubs worldwide. We manage export documentation, certifications, and chemical analysis sheets for hassle-free customs clearances.
Expert answers addressing the technical, metallurgical, and commercial inquiries of engineering managers and bulk buyers.
Demonstrated performance across manufacturing setups, power stations, and heavy fabrication shops.
High-deposition structural steel welding in heavy structural and automotive chassis fabrication plants.
High-efficiency, all-position welding solutions optimized for shipbuilding, heavy equipment, and offshore structural elements.
High-temperature pressure piping loops and distillation units requiring superior corrosion resistance.
Root-pass welding on heat exchangers, nuclear components, and clean food-processing piping systems.
Order direct from our factory. We support full OEM white-labeling, custom chemistry adjustments, and bulk container logistics.
Yuxin
