1. what are the types of welding electrodes (materials), what is the difference between different materials?
As far as I know, the welding rod is not the pipe specification. They are 5 kilos a pack. One case is 20 kilos. At least the Atlantic has this kind of packing. There are two main kinds of welding rod. There is no need to be as complicated as the previous net friend, the acid welding rod and the basic welding rod. Acid electrode, that is, the most common, such as 422. This electrode is generally easy to use, not demanding, carbon steel, ordinary iron can be used, the basic electrode contains more. Mainly used for higher welding requirements. Boiler aspect. Such as 317.507.307., these 3 are carbon steel. There are 137.407 stainless steels. Also used for boiler pipes. Pressure vessel aspects. Specifications are common for 3.2, 4, 6, 2.5. That's all I know
40 jin. Ordinary acid welding rod J422 with any welding machine can burn. Basic electrode J507 use DC welder. Different materials use different electrodes.
Each package weighs 5KG, 20KG per box, 3.2 diameter, about 32 per kg. 4 about 17 kilos per kilogram in diameter. About 11 of 5.20kg one case, one case, four packets
