harga tiang listrik besi 6 meter No Further a Mystery
As shown from the determine, tightening the bolt leads to a wedge becoming pushed up against a sleeve, which expands it and causes it to compress from the material it is actually remaining fixed to.Pastikan juga untuk memilih angkur sesuai dengan kebutuhan dan spesifikasi konstruksi. Jadi, mengetahui apa itu angkur dan jenisnya sangat penting dalam