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5. MIG (GMAW) welding guidelines
Work piece preparation
Welding joint describes the welding spot and exact position of work pieces to be welded together.
Work piece preparation, groove form and width, material type and thickness, together with certain
welding technique all determine joint type.
Around the groove work pieces should be dry and clean, free of rust, metallic coating, dirt, colour or
grease.
Joint type
Groove shape
Weld shape
Metal thickness
[mm]
Work piece
spacing [mm]
Square butt
joint
single sided
up to 1,5
from 1,5
0 to 2
Square butt
joint
double sided
2 to 4
up to 2
3 to 6
up to 1
V – butt joint
3 to 6
up to 1
Square T - joint
single sided
from 0,6
-
Square T - joint
double sided
from 0,6
-
Lap joint
0,6 to 1,5
-
Edge joint
from 1
-
Summary of Contents for MIG 135i
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