The fibers, steel armored optic fiber cable, 250μm, are positioned in a loose tube made of a high modulus plastic. The tubes are filled with a water-resistant filling compound. The tube is wrapped with a layer of PSP longitudinally.
G4-73 and Y4-73 boiler through and induced draft fans are mainly used in 2 ~ 670t/h steam boilers in thermal power plants.In the absence of other special requirements, g4-73 series fans can be used for mine ventilation and general ventilation.The medium