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　　Now hollow sections is used in many industries. It is a kind of hollow sections. After special treatment, the finished product can be used in many places. So hollow sections is an indispensable profile in the construction industry. What other industries will use square pipe besides the construction industry? Where is the hollow sections commonly used?

　　25x50 Galvanized Square Rectangle Steel Hollow Section are widely used. Heating hollow sections are rectangular pipes, through which water or steam can be transported to make our indoor temperature higher. This type of rectangular pipes can only be used for this low pressure fluid. In addition, hollow sections are also used in some mechanical industries, which are made of stainless steel.

　　In many industries, square hollow sections plays different roles, so for square hollow sections in different industries, it has its own standard number. Different standard number square hollow sections plays different roles. For people who often use square tube, they must be very clear about this point, so when they use square hollow sections, they have their own standard number. Wait, we must not mess up, otherwise it will not play its greatest role.

　　Of course, we still have to choose to buy good quality, and how to judge its quality is by looking at its hardness.

　　According to how much hardness it can withstand, the hardness value of the hollow sections can not be too hard or too soft. When purchasing, we should not buy some inferior quality rectangular tubes for the sake of cheapness. Otherwise, unpredictable dangers may occur in the process of application.

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