Trapezoidal ventilation double -walled hose

The utility model relates to a trapezoidal ventilation double -walled hose. The problem of general ventilation pipe installation inconvenient, the ventilation windage is big, the dust adsorbs easily,the bacterium breeies easily is solved. The whole trapezium structure that be of ventilation pipe, ve...

Ausführliche Beschreibung

Bibliographische Detailangaben

1. Verfasser:	ZHOU JINGXIA
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	BLASTING ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS HEATING JOINTS OR FITTINGS FOR PIPES LIGHTING MEANS FOR THERMAL INSULATION IN GENERAL MECHANICAL ENGINEERING PIPES SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING THERMAL INSULATION IN GENERAL WEAPONS
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