The Definitive Guide to harga besi hollow
As demonstrated in the determine, tightening the bolt brings about a wedge getting driven up versus a sleeve, which expands it and triggers it to compress in opposition to the fabric it is being fastened to.Angkur dengan cara kerja friction akan menciptakan gaya gesek antara media aplikasi dengan angkur yang dipasang. Ketika angkur dikencangkan, pr