截止閥|上海閥門供應商〖閥門專業廠家〗首龍系列產品
J44Y、L44Y、GJ44H高壓角式截止閥 J11W蘇式內螺紋截止閥 J61H/Y高溫高壓截止閥 J941H電動截止閥 J641H氣動截止閥 WJ41H德標波紋管截止閥 J41H-10K日標截止閥 WJ44H角式波紋管截止閥 J41H美標法蘭截止閥BJ41H保溫截止閥 J65Y直流式對焊截止閥 NKJ61H真空隔離焊接式截止閥 DSJ61H焊接式水封截止閥 J11B內螺紋氨用截止閥 BJ45直流式保溫截止閥 YJF高壓截止閥 J21B外螺紋氨用截止閥 JZF-G型高壓截止閥 BJ41Y鍛鋼保溫截止閥 J41W不銹鋼截止閥 J41H、J41Y鍛鋼法蘭端截止閥 WJ41H美標波紋管截止閥J11W內螺紋截止閥 JZF型截止閥 JY41W氧氣專用截止閥 JZF-T型高壓截止閥J41B氨用截止閥 J44H法蘭角式截止閥