Hangzhou Xingda ventilation equipment to undertake all types of tin ventilation engineering, Hangzhou tin roof ventilation works without power ventilation, ventilation engineering tin Shaoxing, Hangzhou fume purification project, Hangzhou, engineering, installation and design of ventilation, fire smoke hotel kitchen project, Hangzhou central air-conditioning duct installation and other train services. The company has experienced professional and technical personnel, specialized in various industrial and mining enterprises, hotels ventilation pipe installation, ventilation ducts schools, hospitals and other ventilation and exhaust gas treatment, waste dust collection of design and installation. Plumbing vent pipe features: 5, thickness are controllable arbitrarily selected within 5-107μm of; 6, no hydrogen embrittlement, no temperature hazards, can guarantee the same mechanical properties; 7, can replace part of the need Redu zinc process; 8, good corrosion resistance, up to 240 hours of neutral salt spray test; 9, using hot dip galvanizing completed for highly corrosive environments various acid, alkali mist like; 10, according to customer requirements roof ventilators, designed to custom specifications duct. Leakage Rate Testing and inspection should be qualified special measuring instruments or measuring devices used in line with national standards in force measurement device (flow measurement throttling device) shall erection. Leakage testing device can be ducted or plenum type. Duct testing devices using orifice for metering element, the plenum-type test device using a nozzle for metering elements, the measured and design values ??given the last measure of not less than 10 percent qualified. In some large hotel without power roof ventilators price, basement smoke control engineering, clean room engineering and ventilation and air conditioning engineering and other occasions, smoke control system is essential. No power roof ventilation | Fuyang Roof ventilators | roof ventilation plant supplied by Hangzhou Xingda ventilation equipment. Hangzhou Xingda ventilation equipment (www.tz1288.com/shop/index_6525.html) strong, credible, in Hangzhou, Zhejiang fan, ventilation equipment industry has accumulated a large number of loyal customers. The company better work attitude and constantly improving ventilation Xingda innovative ideas will lead into the brilliant and you work for a better future!