What Does harga tiang listrik beton 7 meter Mean?
As proven during the determine, tightening the bolt ends in a wedge staying driven up from a sleeve, which expands it and will cause it to compress in opposition to the material it really is currently being fastened to.Angkur bounding bekerja dengan cara mengikat bolt dengan media aplikasi. Simplifikasi dari angkur ini adalah seperti lem pada umumn