Lastek 171

Root pass in steel pipes

Copper coated welding rod for TIG-welding of mild steel.

Lastek 171 is recommended for root pass welding in pipes and plates.

Specifications & Usage


Recommended for welding following base materials:

Structural steel: St 34 - St52

Pipe steel: St 35.8 - St 45.8

Boiler steel: HI - HIV, 17Mn4, 19Mn5

Cast steel: GS38 - GS 45

Ship steel: A - B - C - D - E

Fine grained steel: St E255 - StE355 - StE380.


Gas flow min. 8 l/min


Welding proces: Tig welding (GTAW)
Material Type: Mild steel (unalloyed)
Welding positions: NA
Norm : EN ISO 636-A
Classification: W 42 4 W 3Si1
Norm: AWS A5.18
Classification: ER 70S-6
Minimum packing: 5 kg in a cardboard box