Selection of welding E6013 welding electrodes shall ensure structural safety, under the premise of practical use, is based on the chemical composition of welding materials, mechanical properties, thickness and joint type, welding structural characteristics, stress state, structural conditions on weld performance requirements after welding construction conditions and technical and economic benefits such as integrated test, targeted selection E6013 welding electrode, the need for welding tests, if necessary.
When steel welding E6013 welding electrode selection of points (1) isotype
① considering mechanical properties and chemical composition of weld metal
For ordinary structural steel, usually requires the weld metal and base metal strength, etc., should be used in the deposited metal tensile strength equal to or slightly higher than the E6013 welding electrode base material. For alloy steel, sometimes also called the parent metal alloy composition and the same or close. In the welded structure rigid, high stress joints, weld easy to crack the adverse circumstances, should consider using lower strength than the base material of the E6013 welding electrode. When the base material is high content of carbon, sulfur, phosphorus and other elements, the weld prone to cracking, good crack resistance should be used basic low hydrogen E6013 welding electrodes.

② consider welding member performance and working conditions
To withstand the loads and impact loads weldments, in addition to meet the strength requirements, primarily to ensure that the weld metal has a high impact toughness and ductility, the choice of plastic, higher toughness index low hydrogen E6013 welding electrodes. Contact with corrosive media weldment should be made of stainless steel or other corrosion-resistant welding rod type E6013 welding electrode according to the nature and characteristics of corrosive media. Welding parts at a high temperature, low temperature, wear or other special conditions of work, should choose the appropriate heat-resistant steel, low temperature steel, welding or other special purpose welding rod.

③ considering welding structural characteristics and stress conditions
The structure of complex shape, the rigidity Heavy welded parts, due to the generation of large internal stress during welding, weld easy to crack, crack resistance should be used in good basic low hydrogen E6013 welding electrodes. Discontinuity of large welded parts difficult to clean weldment should be used for rust, scale, oil is not sensitive to acid E6013 welding electrode. For weldment conditioned not flip, should be used suitable for all position welding E6013 welding electrode.

④ consider the construction and economic conditions
Product performance in meeting the requirements of the situation, the process should be used with good acid E6013 welding electrode. In a small or poor ventilation of the occasion should be used in low dust acid E6013 welding electrode or E6013 welding electrodes. Welding work on large structures, conditions should maximize the use of high efficiency E6013 welding electrode, such as iron powder E6013 welding electrode, high efficiency gravity E6013 welding electrode, the specific E6013 welding electrode selected bottom E6013 welding electrode or E6013 welding electrodes of the vertical downward and the like, in order to improve welding productivity.