The Definitive Guide to harga besi hollow
As revealed from the figure, tightening the bolt leads to a wedge getting driven up in opposition to a sleeve, which expands it and brings about it to compress against the fabric it really is getting fixed to.Selain itu, angkur baja juga bertugas untuk mendistribusikan beban secara merata guna mengurangi tekanan pada titik-titik tertentu. Ini dapat