Steel structure project how to determine the quality?

Now popping up in various types of steel structure in our side, and the market demand is growing, so more and more people begin to understand the guangdong steel structure engineering, but then again, many institutions can provide relevant services for us, but in terms of quality of products doesn't seem to get the corresponding guarantee, we shall make judgment on the quality of how to? First of all, you can learn about the teams ahead of time, we found that many teams have appeared in our side, but has the certain differences in the aspect of word of mouth, if we choose the construction team very experienced, and in the process of work did not produce too many negative news, so the agency is often the most accord with our actual needs. In judging the guangdong steel structure project quality, also suggest that we can understand the other party used by all kinds of material, have a look at the other side of using what type of material, if is ordinary steel material, the price may be low, but use fixed number of year is likely to shorten, but if you are using the high quality steel materials, and these steel materials in the process of production, so it often meets our basic needs, can be long time for us to use. In judging the quality of high and low, we need to know is stability, if the stability of the product itself has no problem, when the warehouse can be living people, so its application range is very wide, and relatively good stability, whereas such products may be not really worth to choose, if we don't have experience itself, recommend to start from this.