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General Welding Consumables

E7016

E7016 is a carbon steel SMAW electrode with low-hydrogen potassium coating, compatible with AC and DC+. The basic low-hydrogen system delivers good low-temperature toughness and outstanding cold crack resistance, suitable for critical steel structures at field sites without DC power supply.

E7016 is a carbon steel SMAW electrode with low-hydrogen potassium coating, compatible with AC and DC+.
The basic low-hydrogen system delivers good low-temperature toughness and outstanding cold crack resistance, suitable for critical steel structures at field sites without DC power supply.

Coating Type: Low-hydrogen potassium type
Current Polarity: AC / DC+ (DC reverse polarity)  
Welding Process: SMAW，All position weld


Comparison: E7015 / E7016 / E7018

E7015: Low-hydrogen sodium type, DC+ only. Superior toughness, AC unavailable.
E7016: Low-hydrogen potassium type, AC/DC+ compatible. Low-hydrogen without iron powder, average efficiency.
E7018: Low-hydrogen potassium iron powder type, AC/DC+ compatible. Iron powder added for highest deposition efficiency.


E7016 Features

· Stable arc and moderate spatter.
· Basic low-hydrogen formulation provides good weld toughness and cold crack resistance.
· AC/DC+ dual polarity, compatible with field AC welders.
· Easy slag removal, suitable for all-position welding.
· Note: High-temperature baking is mandatory. Sensitive to rust and oil contaminants. No iron powder, average deposition efficiency.


E7016 Welding Tips

· Compatible with AC or DC+.
· Use short arc and narrow bead technique.
· Remove oil, moisture and heavy rust around the groove.

E7016 Common Defects
Porosity: damp electrode, insufficient baking, excessive arc length
Cold cracking: electrode moisture, insufficient preheat, rapid cooling
Slag inclusion: excessive weave width, incomplete inter-pass cleaning


E7016 Applicable Base Metals

Low carbon steel & mild low alloy steel: Q235, Q355 (16Mn), S235JR, S275JR, A106 Gr.B, Ship Grade A/B/D steel plates

Typical Applications:
Bridges, engineering machinery, storage tanks, critical pipeline welds, load-bearing structures for field sites without DC power supply.







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E7018 is a carbon steel SMAW electrode with low-hydrogen potassium iron powder coating (basic low-hydrogen type). Compatible with AC and DC+.

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E7015

E7015 is a carbon steel SMAW electrode with low-hydrogen sodium coating (basic low-hydrogen type). The weld metal has low diffusible hydrogen, outstanding ductility and low-temperature toughness with strong resistance to cold cracking. It is ideal for critical restrained thick-plate load-bearing structures.

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