THE DEFINITIVE GUIDE TO HARGA BESI HOLLOW

As revealed during the determine, tightening the bolt ends in a wedge staying driven up from a sleeve, which expands it and brings about it to compress towards the material it's being mounted to.Angkur dengan cara kerja friction akan menciptakan gaya gesek antara media aplikasi dengan angkur yang dipasang. Ketika angkur dikencangkan, substance akan