2 Where two metal components of an anchor are in contact both components should be the same grade of stainless steel, for example a fixed hanger and an expansion bolt.
2 Where two metal components of an anchor are in contact both components should be the same grade of stainless steel, for example a fixed hanger and an expansion bolt.
2两个金属的锚栓元件，接触之处的材质须为同级的不袗，如固定耳片和膨胀锚栓。