(1) Fabrication: Steel Structure manufacture including lofting, Number material, cutting, calibration, and many other aspects. Bolt friction surface treatment, anti-slip coefficient should meet the design requirements.Production quality inspection after blasting and painting. General installation
welds 30 ~ 50mm not coating.
(2) Welding: Welders must pass an examination and obtain certificate, and must pass the examination in their projects and their scope of accreditation welding. Welding material should match with the base material, full penetration of first , second degree internal defect by ultrasonic testing , ultrasonic testing can not make judgments of the defect, the use of radiography.
(3) Transportation: transport of Steel Structure choose the truck according the lengh and weight of Steel structure , Steel members pivot on the vehicle, both ends of the projecting length and the taping method should be taken to ensure no deformation member, does not damage the coating.
(4) Installation: Installation of steel structure according to the construction drawing, the installer must ensure structural stability and does not lead to
permanent deformation. Mounting posts, each section of the column axis positioning axis to be controlled from the ground on a direct quote. Steel
columns, beams, roof trusses and other major components after installation, they must immediately be corrected and fixed.
Processed by the plant component friction surface, reinspection required before installing anti-slip coefficient, after passing the installation.
(5) Fire and rust:
1) Steel structure fireproof performance is poor. When the temperature reached 550 ℃, the yield strength of the steel at normal temperatures down to about 0.7 yield strength, structure is to achieve its design strength and damage may occur.Design shall be based on fire code regulations, so that the appropriate structures to meet fire safety standards. In the fire safety standards within the required time, should make the steel temperature does not exceed the critical temperature, in order to ensure the normal carrying capacity of the steel structure.
2) steel structure exposed atmosphere, especially atmospheric pollution by severe corrosion, the most common is the rust. This component of the surface must be protected against corrosion to ensure the normal use of steel. Preservative treatment method based on component surface conditions and requirements of life decisions.
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