How to choose the right soldering iron tip?

1, knife-shaped (K / SK) iron head, features: the mouth is knife-shaped, vertical or pull welding welding can be, is a multi-purpose iron head. Application: Suitable for SOJ/PLCC/SOP/QFP power supply, grounding part of the components, correction of tin bridge, connectors and other welding.
2, conical iron head (B type), features: the tip is conical, the front end can be welded. Application: suitable for general welding, regardless of the size of the soldering point, can be used B-type soldering iron tip
3、Horseshoe iron head (C type), features: the mouth is horseshoe-shaped, the beveled part of the mouth for welding. Application scope: suitable for more tin amount of welding, such as welding a large area, thick terminals, welding pad large welding environment.
4、Flat head shape (D type) iron head, features: the mouth is flat head shape, with flat head part of the welding. Application scope: suitable for the need for more tin amount of welding, such as welding a large area, thick terminals, solder joints large welding environment
5、Pin tip soldering iron head (I type), features: the front end of the soldering iron head is a needle tip shape. Application scope: suitable for soldering the environment of narrow space or correct the soldering chip produced when the tin bridge.