Produce a product or to purchase a machine, the most essential is the inspection of the machine, in order to produce high quality air duct machine, so be strict inspection for duct production line
1. Clean the duct joints of the clean system, the air pipes, fittings, components and all joints of the clean system must be closely kept;
The inner surface of the air duct of the clean system must be smooth and smooth. It is strictly forbidden to have transverse joints and tube for reinforcement or use of convex edge reinforcement.
2. The pipe crack must be compact, uniform width, no hole, half bite and distension.
Direct pipe longitudinal bite;
The appearance of the air duct, the Angle of the Angle is straight, the arc is even, the two sides are parallel, there is no obvious warping Angle, the surface concave and convex is not greater than 10mm;
The air duct and flange are connected securely, the edge is basically flat, the width is not less than 6mm, the flange.
3. Flange of air duct of wind pipe line, the hole spacing between bolts and rivets of flanges shall not be greater than 150mm, the weld shall be firm, the holes shall not be installed in the weld, and the holes shall be interchangable;
Stainless steel plate, aluminum plate and composite steel duct, stainless steel plate and aluminum plate wind tube surface have no obvious notch, scratches, concave holes and other defects, the composite steel pipe surface is not broken.