As revealed while in the figure, tightening the bolt ends in a wedge being driven up in opposition to a sleeve, which expands it and causes it to compress versus the material it truly is being fastened to.Pelatihan: Pekerja harus mendapatkan pelatihan yang memadai tentang penggunaan angkur dan perangkat pelindung jatuh lainnya. Pelatihan ini pentin… Read More