亚洲欧洲日韩,欧美xxxxx性开放,亚洲欧美久久婷婷爱综合一区天堂,欧美透逼,日韩在线国产精品,国产婷婷高清在线观看免费,青青热在线观看视频精品

QA15-25 new type steel structure shot blasting machine is mainly used for shot blasting of steel structure parts. Using the high-speed rotating impeller of the shot blaster to accelerate the shot ball to the surface of the workpiece, impact and scrape the surface of the workpiece, not only can clean the sand, rust and dirt on the surface of the workpiece, but also eliminate the surface stress of the workpiece. The surface is shot blasted to improve the fatigue strength of the workpiece, increase the adhesion of the paint film when the workpiece is painted, and finally achieve the purpose of improving the surface and internal quality of the whole workpiece.