harga tiang listrik besi 6 meter No Further a Mystery
They act transferring the forces through mechanical interlock. This fastening technological innovation is used in steel-to-steel link, For example to attach cold-formed profiles. A screw is inserted in the base materials by means of a gas actuated gasoline gun.Untuk memastikan angkur baja yang terpasang benar-benar kuat, ada syarat yang perlu kita