Heat Exchanger Tube Maintenance and ReplacementCompositionShell-and-tube heat exchangers are a traditional, most widely used heat exchange device. Due to its sturdy construction and the ability to be manufactured from a variety of materials, it is hi...
2018-11
In the submerged arc welding zone, defects such as blowhole, hot crack and undercut are easy to occur.1, foam. The main reason is the bubble occurred in the weld hydrogen remains hidden in the formation of air bubbles in the weld metal, so the el...
2018-9