The coating quality of steel structure engineering should be as follows

(l) Check the rust removal quality of steel components strictly according to the grade of steel structure engineering design requirements.

(2) Inspect the factory quality certificate of coating raw materials, and check the accreditation certificate of fire department.

(3) Thoroughly remove dust, oil and other garbage on the surface of parts before painting.

(4) Coating construction should be carried out in a dust-free, dry environment, and its temperature and humidity meet the specification requirements;

5) Coating times and thickness meet the design requirements;

(6) carefully handle the damaged parts of the coating to ensure the quality of the coating;

(7) carefully check the adhesion of the coating;

(8) Strictly check and accept the appearance to ensure that the coating quality meets the specification and standard requirements.

Five, pressing metal plate engineering.

Pressure plate engineering is a kind of color plate based maintenance structure, is a new type of building maintenance structure.

At present, the main problems existing in the engineering practice are: construction unit formulated color plate (sandwich board) construction scheme, color plate juncture, color plate connection, the color plate accessories such as production of node structure processing is not careful or unreliable, leakage of the maintenance structure, color plate component project visual quality is not level off, suitable straight, deformation, scratches, etc.

In this regard, supervision engineers of steel structure engineering manufacturers should pay attention to the following points in their work:

(1) before the production and installation of color board (sandwich board), the construction unit should supervise the construction unit to formulate a thorough and reliable color board engineering construction scheme, especially the formulation of detailed plate scheme, construction methods and quality assurance measures;

(2) In the process of production and installation, inspection, side station supervision and parallel inspection should be strengthened to eliminate the quality problems existing before and during construction;

(3) Strictly carry out the inspection batch and sub-project acceptance, to ensure that the node structure is reasonable, reliable, no leakage, smooth, straight, dense, consistent color, plate surface without scratches, rust, pollution.