Shandong boiler manufacturers fan manufacturers boiler fan _ Shandong Company Name: Henan Hong Fan Co., Ltd. Company website: www.henanhongjifengji.com sales department: Mobile Tel: 15518086290 fixed hotline: 0394-7892627 QQ: 445528270 E-mail: henanhongjifengji @ 163 .com cyclical suction, exhaust and instantaneous isochoric compression caused by pulsating flow velocity and pressure manufacturers _ Shandong Shandong boiler fan boiler fan manufacturers will thus have a greater aerodynamic noise. In addition, the gap between the rotor and the rotor and between the cylinders can cause gas leaks, which reduce efficiency. Roots blower displacement of 0.15 to 150 m3 / min, the speed of 150 to 3000 r / min. Single-stage pressure ratio is typically less than 1.7 up to 2.1, you can multi-level series. Shandong boiler manufacturers fan manufacturers boiler fan _ Shandong