The procedure and filler metal for hardfacing at cold state to obtain high wear resistance layer inside the valve shell body ( HT250 ) is introduced in the paper . The valve is used for concrete feeding .
介绍了在混凝土分配阀壳体（HT250）内表面获得高硬度耐磨层的堆焊材料和冷堆焊工艺。
HT250