The aim of this research is to investigate mechanical and microstructure characteristic of ST 37 Friction Stir Welded (FSW) butt joints. The rolled plate of ST 37 steel was used as the base material. Tungsten carbide (20 mm on diameter) was used as the tool. https://www.markbroyard.com/best-catch-acure-ultra-hydrating-plant-ceramide-daily-facial-lotion-50ml-fashion-great-buy/