焊接柱塞閥
美標柱塞閥 ,國標柱塞閥 ,鑄鋼柱塞閥
密封環(huán)Sealing ring S軟鋼(增強柔性石墨)S soft steel (flexible graphite) S軟鋼S soft steel F軟鋼F Soft steel 填料Packing 增強柔性石墨Fexible graphite 支架Yoke WCB WCB或WC6 閥桿螺母Stem nut 45(ZCuZn25A16Fe3Mn3) 四開環(huán)Four piece ring 1Cr13 20Cr1MoVA