Fluoride Basic Flux
1.4
1.2g/cm³
10-40 mesh, 12-60 mesh
25 kg plastic valve bags, 500/1000 kg large bags
Can be used for multi-layer, double-sided single-pass welding.
Suitable for welding of light and heavy steel structures when used with H08A, H08MnA, and H10Mn2.
Good slag detachability at a 90-degree angle, with good transition of weld formation.
Applicable to steel structures: light steel (H-type), heavy steel (H-type, box-type).
Can be used for welding of L210-L415 grade large and small diameter spiral and straight seam pipes when used with H08A and 50-6.
Has good anti-porosity ability at high current and a welding speed of 1.8 m/min; the slag is in a long strip shape and easy to detach. The weld has a good finish.
Recommended applicable industries: spiral pipes and straight seam pipes below 40 kg grade.
| SiO₂+TiO₂ | CaO+MgO | Al₂O₃+MnO | CaF₂ |
| 20-30 | 20-30 | 35-45 | 5-15 |
| Wire electrodes used | Yield strength ≥MPa | Tensile strength ≥MPa | Elongation 8%≥% | Impactvalues≥J (CVN |
||
| +20°C | -20°C | -40°C | ||||
| EM12K | 415 | 510 | 32 | >=130 | >=100 | 50 |
| EH14 | 430 | 530 | 31 | >=80 | >=70 | 70 |
| H08Mn2MoA | 575 | 480 | 25 | 85 | >=70 | -- |
Since it is a sintered flux, it is prone to absorbing moisture. It must be dried at a temperature of 300-350°C for 1-2 hours before use to prevent pores from forming in the weld. Unused flux should be put back into the oven for heat preservation.
Wire cleaning: The surface of the welding wire should be kept clean, free of oil, rust, and moisture.
Groove cleaning: The workpiece groove and the 20mm range on both sides need to be cleaned thoroughly to remove impurities such as water, oil, rust, and paint.
Parameter selection: Appropriate welding current, voltage, and speed should be selected according to the steel plate thickness, groove form, welding position, etc. For high-speed welding up to 2.5 m/min, use optimized parameters such as 800-1200A current, 30-40V voltage, and multi-wire setups to maintain arc stability and bead quality.
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.
Copyright © 2026 by Jinan Gujin Welding Materials Co,. Ltd. All Rights Reserved
