1、 During the processing of ventilation ducts, longitudinal joints
should be avoided as much as possible, but transverse joints should
never be present. And the bite seams and corners of the ventilation
pipeline need to be sealed tightly with sealant according to the design
cleanliness level requirements. The sealing surface of the joint of
other ventilation duct panels should be set on the positive pressure
side of the ventilation duct wall.
2、 If it is a colorful coated steel plate ventilation duct, it should be
adhered to that the inner wall is lubricated, and the coating should
not be damaged during the processing of the ventilation duct. If the
damaged area appears, it needs to be coated with epoxy resin on the
surface. In the process of processing other ventilation ducts,
anti-corrosion measures should be taken, and core pulling rivets cannot
be used. Moreover, during the installation of ventilation duct parts,
these parts must be galvanized.
3、 During the processing of ventilation ducts, reinforcement frames or
ribs should not be installed inside the ducts, as this will have a
certain impact on the quality of the ventilation ducts.
4、 The connection method of S-shaped inserts and C-shaped right angle
inserts cannot be used for the processing of ventilation ducts. For some
special ventilation ducts, snap fit bites cannot be used.
五、通风管道制造结束之泥杆 保定古筝 塑料增韧剂 拱形护坡模具 保定空调维修 托辊生产线后，还要用清洗液进行清洗，只要到达清洗规范之后，才能够及时封口。
5、 After the manufacturing of the ventilation duct is completed, it
needs to be cleaned with cleaning solution. Only after reaching the
cleaning specifications can it be sealed in a timely manner.
If the above problems are not made mistakes, there should not be much problem when processing the ventilation duct!