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| Categories | Graphite Electrode |
|---|---|
| Brand Name: | HUATAO |
| Model Number: | ER49 , ER50 , ER55, ER70 |
| Certification: | AWS A5.18 and ISO 3581-A |
| Place of Origin: | CHINA |
| MOQ: | 1carton |
| Price: | 5USD - 10 USD per carton |
| Payment Terms: | L/C, T/T, Western Union, MoneyGram |
| Supply Ability: | 500Tons per Month |
| Delivery Time: | 15-30days |
| Packaging Details: | carton box |
| Product Name: | CO2 Welding Wires |
| Wire Alloy Composition:: | ER70S-6 (C: 0.06-0.15%, Mn: 1.40-1.85%, Si: 0.80-1.15%) |
| Diameter Tolerance:: | ±0.01mm (ISO 544 Class C precision) |
| Tensile Strength:: | 500-620 MPa (AWS A5.18 verified via 3rd-party lab) |
| Spool Winding Precision:: | <0.5% overlap rate (tested at 12m/min feed speed) |
| Coating Type:: | Triple-layered copper plating (0.3μm thickness, salt spray resistant 96hrs) |
| Certifications:: | AWS A5.18, EN ISO 14341-A, RoHS 2011/65/EU compliant |
| Hydrogen Content:: | <5ml/100g (tested per AWS A4.3 method) |
| Elongation Rate:: | 22-28% (ISO 6892-1 tested at 20°C) |
| Optimal Gas Mix:: | 75-80% Argon + 20-25% CO2 (C25 gas for low-spatter) |
| Company Info. |
| HUATAO LOVER LTD |
| Verified Supplier |
| View Contact Details |
| Product List |
Industrial Flux-Cored Welding Wires



Gasless, Not Clueless: Self-shielded design eliminates gas tanks—ideal for bridges, offshore rigs, or tight spaces. (A Texas crew welded 1,200ft of handrail in 40mph winds using these.)
Rust? Burn It Off: Silica-manganese flux eats through mill scale and light rust. No pre-cleaning needed.
X-Ray Quality, Every Time: Slag peels off like banana skin, revealing smooth beads that pass ASME Section IX inspections.
Certified Tough: AWS A5.20 E71T-1 & E71T-12 compliant.
Feed Smooth or It’s Free: Precision winding tested at 15m/min feed speed.

E71T-1: All-position workhorse. Used to weld 50mm thick crusher jaws in Chilean copper mines.
E71T-12: Low-hydrogen variant for critical structural joints. Prevents cracks in -29°C Siberian pipelines.
E71T-GS: General purpose, perfect for farm equipment repairs.
Technical Parameters:
Diameter: 0.9mm (thin sheets), 1.2mm (most versatile), 1.6mm (heavy plate).
Spool Sizes: 5kg (portable), 15kg (high-volume), 300mm steel cores.
Tensile Strength: 550-670 MPa (AWS A5.20 verified).
Deposition Rate: 8-12 lbs/hr (30% faster than stick electrodes).

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