[Jie Weinuo Industrial Star recommendation - carbon steel plate duct] Duct flange made of galvanized steel production Tianjin steel duct, the amount of galvanized steel increased by approximately 4%; with the production line, the production of precision and quality is easier to control. In addition, Tianjin steel duct outlets, steel and reduce the amount of corrosion engineering, reducing the paint pollution of the environment, with good economic and social benefits. [Jie Weinuo Industrial Star recommendation - carbon steel plate duct] Jie Weinuo produce steel duct (ordinary steel), galvanized sheet (galvanized iron) wind pipe, stainless steel ventilation pipe, glass steel ventilation pipe, plastic ventilation pipe, composite air duct , color steel sandwich insulation panels ventilation tube, rubberized cloth ventilation tubes (such as mine ventilation duct), mine ventilation pipes and other plastics; ventilation ducts BY PURPOSE: general are: the return air duct cleaning system, central air conditioning and ventilation pipes, industrial supply and exhaust ventilation pipe, environmental protection system for suction and discharge pipe, mine gas drainage tube, hair dryer and other mine rubberized cloth; ventilation ducts by shape points: General: round, rectangular, spiral shape.