Rumored Buzz on besi i beam
As shown in the figure, tightening the bolt results in a wedge becoming driven up in opposition to a sleeve, which expands it and triggers it to compress in opposition to the material it is being fixed to.Pelatihan: Pekerja harus mendapatkan pelatihan yang memadai tentang penggunaan angkur dan perangkat pelindung jatuh lainnya. Pelatihan ini pentin