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According to the characteristics and classification of steel, stainless steel, divided into resistance to nitric acid sulfuric acid resistant stainless steel, stainless steel, pitting corrosion resistance to stress corrosion of stainless steel, stainless steel and other steel; according to the classification features, divided into low temperature stainless steel, non-magnetic stainless steel, free cutting stainless steel, super plastic stainless steel etc.. At present, the commonly used classification methods are classified according to the characteristics of the steel structure, the chemical composition of steel and the combination of the two.s
Solution: 250*175*10 said that the parameters of the steel I-beam: lower flange width 175, steel high 250, plate thickness is 10. (above units are mm), according to the shape of I-beam, you can calculate the length of I-beam, volume is: (175*10*2+ (250-20) *10) /1000000=0.0058 cubic meters / meters
Thicker board, welding process should pay attention to preheat before welding, welding cold, welding on both sides of the weld must be done before cleaning. If the beam is longer, more than one welder can be arranged at the same time.s
This should be based on the size of the room to design, need to use a large number of steel to do the main beam and auxiliary beam, these aspects are determined, according to the design plan to specific related budget. General family or villa do loft, price range of 600-1200 yuan, look at the process and room span.s