HJ107 Pipeline Flux
The benchmark for high‑toughness pipeline welding
TOKO HJ107 is a premium agglomerated submerged arc welding flux specially developed for API 5L X60–X80 line pipe and offshore pipeline applications. With ultra‑low hydrogen (≤3ml/100g) and exceptional CTOD performance, it delivers high‑strength, high‑toughness welds even at sub‑zero temperatures down to -50°C. The flux is optimized for narrow‑groove welding, providing minimal porosity and superb slag detachability.
- Ultra‑low hydrogen (≤3ml/100g)
- High basicity (≥3.0) for superior toughness
- Impact toughness ≥70J at -50°C (with ER80S‑G)
- Excellent CTOD resistance
- Optimized for narrow‑gap & high‑speed welding
- Low porosity and superb slag release
Type
Agglomerated
Basicity
≥ 3.0
Hydrogen Content
≤3 ml/100g
Matching Wire
AWS A5.28 ER80S‑G
Impact Temp.
-50°C
CTOD
≥0.25 mm (at -10°C)
🔧 Technical Properties
- Flux Type Agglomerated (high‑basicity)
- Grain Size 10 – 60 mesh
- Bulk Density 1.3 – 1.6 g/cm³
- Moisture Content ≤0.04%
- Phosphorus (P) ≤0.025%
- Sulfur (S) ≤0.020%
- Recommended Preheating 80 – 150°C (depending on wall thickness)
⚙️ Welding Parameters
- Current Range 450 – 1400 A
- Voltage Range 28 – 46 V
- Travel Speed 20 – 60 cm/min
- Wire Diameter 2.4 – 5.0 mm
- Heat Input 1.8 – 4.5 kJ/mm
- Electrode Extension 25 – 40 mm
- Joint Type Butt (narrow‑groove, V‑groove), spiral pipe
🛢️ Key Applications
🛢️ API 5L X60–X80 Line Pipe
🌊 Offshore Pipelines & Risers
⛽ Gas & Oil Transmission
🏗️ Subsea Structures
🔧 Pipeline Repair & Tie‑ins
🏭 High‑pressure Storage Tanks
📄 Technical Documents & Support
Download the HJ107 datasheet, safety data sheet, or request WPS/CTOD support from our pipeline welding specialists.
📞 For pipeline project inquiries, custom formulations, or technical consultation, contact us at
office@tokoc.com or call (+86) 510-8359 5138.