harga tiang listrik besi 6 meter No Further a Mystery
They act transferring the forces by using mechanical interlock. This fastening technology is Employed in steel-to-steel connection, For example to attach cold-shaped profiles. A screw is inserted in to the base substance by way of a gas actuated fuel gun.Selain itu, angkur baja juga bertugas untuk mendistribusikan beban secara merata guna mengurang