harga tiang listrik besi 6 meter No Further a Mystery
As demonstrated inside the figure, tightening the bolt results in a wedge becoming pushed up from a sleeve, which expands it and brings about it to compress from the fabric it can be currently being fastened to.Pastikan juga untuk memilih angkur sesuai dengan kebutuhan dan spesifikasi konstruksi. Jadi, mengetahui apa itu angkur dan jenisnya sangat