J49W壓力計用截止閥 J61Y/W焊接式截止閥 J63Y/W對焊式截止閥 J61Y/W高溫高壓截止閥 J91W/H卡套截止閥 J94W/H卡套角式截止閥 J24W/H外螺紋角式截止閥 JJM1壓力表截止閥 JJM8壓力表截止閥 GMJ11F/H高密封取樣閥 GMJ14F/H高密封取樣截止閥 JJBY1取壓截止閥 J49W壓力計用針型閥 J61Y/W焊接式針型閥 J63Y/W對焊式針型閥 J61Y/W高溫高壓針型閥 J91W/H卡套針型閥 J94W/H卡套角式針型閥 J24W/H外螺紋角式針型閥 JJM1壓力表針型閥 JJM8壓力表閥 GMJ11F/H高密封取樣閥 GMJ14F/H高密封取樣針型閥