1、 For the quality of steel, the chemical composition analysis and mechanical properties sampling re inspection shall be carried out for the steel under one of the following conditions:
(1) Impo...
There are many advantages of steel structure, such as light weight, less material, low cost, short construction period, large span, safe and reliable, beautiful shape, stable structure, etc.The bu...
Steel structure construction is light in weight, high in strength, good in overall rigidity and strong in deformation.The self weight of the building is only one fifth of the brick and concrete st...
1、 Preheating before welding, preheating before welding and heat treatment after welding are very important to ensure welding quality.The welding of important components, alloy steel and thick p...
A new research paper written by courant.biz on the latest COVID-19 update of the global aircraft hangar door market in 2021, which highlights the important industry trends and dynamics affecting th...
1、 System control:
1On the application of special-shaped column frame and frame shear.Based on the fact that Jinan area is 6 degree area except Pingyin, the limit value of 7 degree is adopted...