1.Rectangular ducts perform circular duct-related items.

2.The stainless steel bracket bracket uses the items in this chapter.

3.Where the wind pipe to welding considerations projects, for the use of manual argon arc welding, the artificial multiplied by a factor of 1.238, the material multiplied by a factor of 1.163, mechanical multiplied by a factor of 1.673.

4.The duct installation and installation project shall include the pipe fittings, but not including the flange and the lifting bracket. The flange and the bracket shall be calculated and carried out separately.

5.Duct in the project, such as the design requirements of the thickness of the plate can be converted, artificial, mechanical unchanged.

The above content is based on the actual work of the students encountered problems from the order, for reference, if there are problems, timely communication, correction.