TIG / GTAW non-consumable electrodes · ISO 6848 colour codes
Tungsten electrodes, specified by colour code — not by guesswork
TONGKE (CHINA) INDUSTRY supplies the full ISO 6848 tungsten electrode range from Baoji, Shaanxi — the heart of China’s tungsten processing industry. Order by tip colour and standard designation, ground finish, packed 10 pcs per tube box or in your own brand.
- Ø 1.0 – 6.4 mm
- 150 / 175 mm
- MOQ 100 pcs, mixed OK
- Ground finish
- OEM & neutral packing
Production-floor shot: WZ8 2.4×175 mm lot on the shelf, hand-marked before packing.
Start from the colour code you already know
Welders and buyers think in tip colours. So do we. Pick the colour, get the exact oxide addition, current type and the page with the full specification.
| Type | Tip colour | Oxide addition | Family | Current | Typical work |
|---|---|---|---|---|---|
| WP | Green | — | Pure tungsten, W ≥ 99.50% | AC | Aluminium, magnesium |
| WT20 | Red | 1.70–2.20% ThO2 | Thoriated | DC | Steel, stainless, nickel, copper |
| WC20 | Grey | 1.80–2.20% CeO2 | Ceriated | DC / AC low-mid | Thin sheet, low-current and orbital TIG |
| WL15 | Gold | 1.40–1.60% La2O3 | Lanthanated | DC / AC | General purpose, steel and alloys |
| WL20 | Dark blue | 1.80–2.20% La2O3 | Lanthanated | DC / AC | General purpose, higher current than WL15 |
| WZ8 | White | 0.70–0.90% ZrO2 | Zirconiated | AC | Aluminium at higher current, stable balled tip |
| WY20 | Per batch marking | approx. 2% Y2O3 | Yttriated | DC | Precision, high-current critical joints |
Colour codes and oxide ranges follow ISO 6848 (EN ISO 6848 in Europe); AWS A5.12 classifications (EWP, EWTh-2, EWCe-2, EWLa-1.5/2, EWZr-1…) are confirmed on shipment documents per type. See the full colour code chart.
Why welders and distributors keep re-ordering
Specified, not “similar”
Every line on your order is confirmed against a designation: type, oxide range, diameter class h7, length ±1 mm, ground finish, tip colour. No substitution without your written OK.
Mixed orders are normal here
Six types, eight diameters, two lengths — combined from 100 pcs total. Ideal for distributors stocking a counter or workshops running several jobs.
Packing that survives freight
10 pcs tube boxes, 20 pcs shop boxes or OEM printed retail boxes with your brand, barcode and SKU. Neutral export cartons as standard.
Compliance-aware advice
Selling into the EU? We flag thoriated-electrode handling practice and quote WC20/WL20 conversion packages. Selling into North America? AWS A5.12 designations on the paperwork.
One contact, door to door
Tockson Qin handles specification, packing, documents and shipment follow-up. Email or WhatsApp — the same person answers.
Honest lead times
Stocked types and sizes ship in days; made-to-order diameters and WY20 are quoted with a confirmed date before you commit.
Real stock, photographed as shipped
No studio renders. These are the tube boxes, labels and cartons that leave our Baoji packing room — the same ones your incoming inspection will open.
Not sure which electrode your job needs?
How to choose
Four decisions: base metal, current type, diameter, packing. Ten minutes to a correct order line.
WT20 vs WC20
The classic argument, settled with the trade-offs that actually matter in production.
Thoriated & EU practice
What European workshops must consider, and the drop-in substitutions we quote.
Send your electrode list today
Type, diameter × length, quantity and packing — mixed sizes welcome. You get a specification-confirmed quotation with lead time, normally within 24 hours.