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Application

Suitable for root welding of carbon steel and 316 series material pipelines, with backside argon-free protection welding wire.

Characteristics

During welding, the flux coating penetrates to the backside of weld metal, forming a dense protective film that prevents oxidation on the backside. Additionally, it enables single-sided welding with double-sided formation, and the slag automatically falls off after cooling, making it easy to remove.

Deposited metal chemical composition:%

Mechanical properties of deposited metal

Reference welding parameter:(AC、DC+）

Note

The power polarity must use direct current electrode positive (DC-), and the current should be selected according to the plate thickness.

The groove shape should be appropriately processed, the groove angle should not be too small, and the root gap is preferably 2-3mm.

To achieve a back weld bead, the formation of a melting hole is essential, and the size of the melting hole should be appropriate.

It is not suitable to weld more than two layers of weld beads.