besi siku lubang Can Be Fun For Anyone
They act transferring the forces by way of mechanical interlock. This fastening engineering is used in steel-to-steel link, By way of example to connect chilly-formed profiles. A screw is inserted into the base content via a gasoline actuated fuel gun.Meskipun penggunaan angkur umumnya terbatas pada bangunan baru, namun dapat digunakan dalam berbag