Building 12, No. 2317 Shengang Road, Songjang, Shanghai, China. +86-150 2197 1920 [email protected]
TKweld presents a dependable line of thoriated tungsten rods designed for precision welding across a wide range of applications. These rods, finished with distinct red, blue, yellow, and black head color codes, help welders quickly identify the correct electrode type for their specific welding needs. Engineered to meet the WP, WT20, WC20, WY20, and WL20 designations, TKweld’s thoriated tungsten rods deliver consistent arc starts, stable arcs, and long service life. Backed by ISO9001 certification, these electrodes offer the quality assurance welders require for professional work.
Reliable Performance for TIG Welding
TKweld thoriated tungsten rods are formulated to provide reliable performance in TIG (GTAW) welding, where a stable arc and predictable behavior are crucial. The thoriated composition produces excellent electron emission, which improves arc starting and minimizes the tendency to stick. Whether you are welding thin sheet metal, structural components, or repair work, these rods help you maintain control over the weld pool and produce clean, consistent welds. The high thermal stability of thoriated tungsten enables the rods to resist eroding and melting under high heat, extending electrode life and reducing the frequency of regrinding.
Color-Coded Heads for Easy Identification
The rods are color-coded for fast identification on the job:
- Red head: WP (Pure Tungsten) — suitable for AC and some DC applications where pure tungsten behavior is preferred.
- Blue head: WT20 (2% Thoriated Tungsten) — a general-purpose electrode for DC welding with excellent arc stability.
- Yellow head: WC20 (2% Thoriated, often noted for DC applications) — optimized for steady arcs in many welding situations.
- Black head: WY20/WL20 variants — for specialized uses where properties of specific thoriated blends offer advantages
The clear color coding reduces mistakes, saves time, and helps maintain workflow efficiency in busy shops.
Precision Manufacturing and Consistent Quality
Each TKweld thoriated tungsten rod is manufactured using tightly controlled processes to ensure uniform composition, straightness, and surface finish. The rods are produced to precise diameters and lengths, enabling consistent feeding in torches and predictable performance in different welding setups. ISO9001 certification underscores TKweld’s commitment to quality management systems, meaning manufacturing processes are monitored and improved to meet customer expectations.
Long Service Life and Cost Efficiency
Thoriated tungsten rods are known for their long life compared with many alternatives. The thoria additive enhances electron emission and raises the melting point of the electrode tip, which reduces wear and spitting during welding. For professional shops, this translates into fewer electrode changes, less downtime, and lower operating costs over time. TKweld’s consistent manufacturing and quality control help ensure that each rod delivers the extended life expected from thoriated electrodes.
Clean, Stable Welds
TKweld thoriated rods support clean welding practices. The stable arc reduces contamination and minimizes the risk of tungsten inclusions in the weld metal. This is particularly important for critical welds where integrity and finish matter, such as aerospace components, pressure vessels, and high-end fabrication projects. Welders can achieve smooth bead appearance and reliable fusion with less post-weld cleanup.
Compatibility and Versatility
Designed to meet WP, WT20, WC20, WY20, and WL20 specifications, TKweld thoriated tungsten rods are compatible with a broad range of welding torches and equipment. They work well with different shielding gases, current types, and amperage ranges, offering welders the flexibility to use them across different materials and job types. From stainless steel and carbon steel to exotic alloys, these rods support diverse welding applications in repair shops, fabrication yards, and production lines.
Ease of Use for All Skill Levels
Whether you are an experienced professional or a novice welder, TKweld rods are user-friendly. The rods grind predictably to a sharp, repeatable point, making it easy to set up the electrode geometry preferred for various welding techniques. The reliable arc start helps less experienced users achieve better control and reduces the learning curve for TIG welding.
Packaging and Availability
TKweld supplies these thoriated tungsten rods in secure packaging that protects the rods from contamination and damage during transport and storage. Packaging options are designed for easy access on the jobsite, and the color-coded heads remain visible through packaging to simplify selection. TKweld rods are available in multiple diameters and lengths to fit common torch setups and OEM requirements.
Safety and Handling
While thoriated tungsten rods offer superior welding performance, users should follow safety guidelines for handling and grinding electrodes. Avoid inhaling dust from grinding; use local exhaust ventilation and appropriate respiratory protection when reshaping rods. TKweld provides product information to help welders use the rods safely and effectively.
Trusted Brand with Certified Quality
TKweld’s thoriated tungsten rods carry ISO9001 certification, reflecting a dedication to consistent quality and continuous improvement. This certification assures buyers that TKweld follows documented processes for production, inspection, and quality control. Customers can rely on TKweld for electrodes that meet performance expectations and arrive ready for professional use.
TKweld’s Red Blue Yellow Black Head Thoriated Tungsten Rods give welders a practical, reliable solution for TIG welding needs. With clear color coding, long service life, stable arcs, and ISO9001-backed manufacturing, these electrodes provide predictable, high-quality results across a wide range of welding applications. Whether used in fabrication, repair, or production settings, TKweld’s thoriated tungsten rods help professionals and hobbyists achieve stronger, cleaner welds with less downtime

Item |
Added Impruty |
Impurity Quantity% |
Other Impruities |
Electric Discharged Power |
Color Sign |
WT20 |
ThO2 |
1.8~2.2 |
-- -- |
-- -- |
Red |
WP |
-- -- |
-- -- |
<0.20% |
4.5 |
Green |
WC20 |
CeO2 |
1.8~2.2 |
<0.20% |
2.7~2.8 |
Grey |
WY20 |
Y2O3 |
1.8~2.2 |
<0.20% |
2.0~2.9 |
Blue |
WZ8 |
ZrO2 |
0.7~0.9 |
<0.20% |
2.5~3.0 |
White |
WL15 |
La2O3 |
1.3~1.7 |
<0.20% |
2.8~3.0 |
Gold |
WT30 |
ThO2 |
2.8~3.2 |
-- -- |
-- -- |
Purple |
WL20 |
LaO3 |
1.8~2.2 |
<0.20% |
2.6~2.7 |
Sky Blue |







A: 4 boxes* 5kg per inner box, or as customer’s requirements