How harga besi 12 per batang can Save You Time, Stress, and Money.
Bentang balok baja tidak normal. Misalnya 8 meter ke atas. Sehingga product yang digunakan untuk konstruksi bangunan tersebut. Otomatis juga berukuran besar.As shown from the determine, tightening the bolt results in a wedge getting driven up in opposition to a sleeve, which expands it and causes it to compress towards the material it really is sta