1. The flexible short pipe should comply with the following regulations

1. Flexible materials should be chosen that are resistant to corrosion, moisture, air and mold. Measures should be taken to prevent the air conditioning system from condensation, and smooth interior walls and low dust-generating materials should be used to purify the air conditioning system.

2. The length of flexible short pipes should usually be 150-300mm, and their connections should be tight, firm and reliable.

3. Flexible stubs should not be used to reduce connecting pipe to align and flatten connections.

4. The length of the flexible stub at the structural deformation joint shall be the width of the deformation joint, plus 100mm or more.

Check quantity: 10% of samples should be randomly selected according to quantity, but not less than 1 sample.

Inspection method: Use a ruler to measure and observe the inspection.

Description: The main function of flexible short pipe is vibration isolation, usually used as a pipe in the duct system at the inlet and outlet of fans or the inlet and outlet of electric air conditioning equipment; sometimes used as expansion pipes in settlement joints of buildings

2, Specifications and basic requirements for the production and connection of flexible short pipes in smoke control systems

Specification: Flexible stubs used in smoke control systems are manufactured from materials that are non-combustible.

Basic requirements: Do not twist, deform or misplace, and do not use on small or large heads.

3, Guide to selecting flexible short pipe:

1. Green: Flexible short tubes made of general-purpose materials for use in air supply and exhaust systems.

2. Red: A short, flexible tube made of non-combustible material for use in flue gas exhaust pipes.

3. The length of canvas soft joint is 150-300mm.

4, flexible short pipe - fireproof soft connection instructions:

Flexible stubs should not be used to reduce the alignment and flatness of connecting pipes. When using flexible stubs in air conditioning systems, measures should be taken to prevent condensation.

1. Rubber damping pads or spring dampers should be used at the contact points between floor standing fans and foundation to reduce vibration; there is a clear boundary between equipment and infrastructure.

2. At the flexible connection to the fan, it is necessary to install a bracket for the air pipe.

5, flexible short pipe connection method:

The air duct and fan adopt a flexible connection method: clamp connection.

The air duct and fan adopt a flexible connection method: flange connection.

Compensation measures should be taken for air ducts passing through building deformation joints: the length of the flexible short pipe should be the width of the deformation joint plus 100mm or more.