直流式Y(jié)型鍛鋼法蘭角式截止閥J45H,J45Y
WJ44H德標(biāo)角式截止閥
外螺紋角式氨用截止閥J24B,J24F
J44F46角式襯氟截止閥
J44B角式氨用截止閥
24h在線微信客服