Agglomerated Aluminum-Rutile Active Flux
~0.85
1.35 g/cm3
0.28 - 1.4 mm (14-60 mesh)
25 kg plastic valve bags, 500/1000 kg large bags
<=5 ml/100g (H5 Grade)
AC / DCEP
Engineered for PEB & H-Beams: Specifically developed for high-speed single-wire or tandem (multi-wire) fillet welding of H-beams in the Pre-Engineered Building (PEB) and steel structure industries.
Perfect Match for 1.6mm Fine Wire: The refined grain size distribution (14-60 mesh) prevents arc blow and wandering under high current densities, ensuring exceptional arc stability for 1.6mm small-diameter wires.
Superb High-Speed Performance: Formulated with a "short slag" characteristic, allowing the molten slag to freeze quickly behind the arc. This supports extreme travel speeds of 1.5m to 1.8m/min without causing undercut or uneven bead edges.
Exceptional Tolerance to Rust & Scale: As an active flux with balanced Si and Mn metallurgical replenishment, it is highly resistant to porosity. High-quality welds can be achieved even on plates with light rust, moisture, or mill scale, saving significant pre-weld grinding costs.
Effortless Slag Detachability: Slag removes easily or self-peels immediately upon cooling, revealing a beautifully smooth weld bead with uniform, delicate ripple patterns.
|
SiO₂+TiO₂ |
CaO+MgO |
Al₂O₃+MnO |
CaF₂ |
|
28-35 |
45-55 |
12-18 |
5-10 |
|
Wire electrodesused |
Yieldstrength ≥MPa |
Tensilestrength ≥MPa |
Elongation8%≥% |
Impactvalues≥J (CVN) |
||
| +20°C | 0°C | -20°C | ||||
|
EM12 |
440 |
535 |
26 |
-- |
>=75 |
45-55 |
|
EM12K |
465 |
560 |
25 |
-- |
>=70 |
35-48 |
|
EL8 |
395 |
490 |
29 |
-- |
>=90 |
55-68 |
● For 1.6 mm Wire: 350A - 450A | 28V - 32V | 100 - 160 cm/min
● For 2.0 mm Wire: 400A - 550A | 30V - 34V | 80 - 120 cm/min
● Polarity: AC or DCEP
Re-drying: The flux must be baked at 300C - 350C for 60 minutes prior to welding to ensure optimal low-hydrogen performance and prevent porosity.
Active Flux Limitation: GJ-501H is an active flux that metallurgically adds Silicon and Manganese to the weld pool. It is strictly recommended for single-pass or limited-layer (up to 2-3 layers) welding. Avoid heavy multi-layer welding on thick plates to prevent alloy accumulation and subsequent reduction in impact toughness.
Flux Recycling: When reusing recycled flux, remove fine dust and debris regularly, and add at least 20% fresh flux to maintain consistent grain size distribution and welding stability.
Consistent Quality, Direct Factory Pricing.
GUJIN
100% batch consistency ensured by our advanced in-house QA lab.
GUJIN
20+ years mastering SAW metallurgical synergy for heavy industries.
GUJIN
Full OEM empowerment, from custom formulations to private labeling.
GUJIN
Massive automated capacity to stabilize your bulk supply chain.
GUJIN
Long-term partner to hundreds of industrial conglomerates worldwide.
Moisture control is critical for submerged‑arc welding fluxes. Our standard packaging is 25‑kilogram multi‑layer kraft paper bags lined with heavy‑duty moisture‑proof plastic bags. For extreme environments or ultra‑low hydrogen requirements (such as H5 grade), we can also provide custom heavy‑duty aluminium foil vacuum packaging. All goods are stacked on wooden pallets and tightly wrapped with multiple layers of industrial shrink film to ensure 100% dryness upon arrival at the port.
No. For High-Grade Oil & Gas pipeline fabrication (such as API X60 to X70), standard neutral fluxes like 301 or active fluxes like 501 are not suitable, as they cannot guarantee the required extreme low-temperature impact toughness. You must use our dedicated pipeline-grade Fluoride-Basic agglomerated flux, GJ-101Q (or GJ-101G), combined with Mo/Ni-alloyed wires (e.g., EA2 or S3Ni1Mo).This combination ensures zero loss of alloying elements and guarantees impact values of ≥27J(or much higher) at -40°C to -50°C.
Our standard MOQ for international orders is normally 5 tons per item. For a full 20‑foot FCL container, the loading capacity is usually 24 tons subject to container space constraints, and it can reach 27 tons without pallets. A 40HQ high‑cube container can hold a maximum of 28 tons. Backed by our robust production capacity, we can finish production, quality inspection and packaging within 7‑10 days upon receiving the deposit, and deliver the goods to major Chinese ports such as Qingdao Port or Tianjin Port.
Yes! We fully understand that re-baking costs time and electricity. For customers who want to skip this step, we highly recommend selecting our Heavy-Duty Aluminum Foil Vacuum Packaging. The flux is vacuum-sealed immediately after high-temperature manufacturing. When you open the bag in your workshop, the flux is in a 100% factory-dry state and can be poured directly into the welding hopper for immediate use.
For structural steel with surface impurities like rust, oil, or mill scale, standard neutral or high-basic fluxes will likely cause porosity. You need our GJ-501A (Aluminate-Rutile Active Flux). It features a highly active deoxidizing slag system that offers exceptional tolerance to surface contaminants. This allows you to achieve flawless, X-ray quality welds at high speeds without rigorous pre-weld grinding, significantly boosting your shop floor efficiency.
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