Classification of square pipes:

1、Q345B Rectangular Pipe Impact toughness galvanized square tube

The load acting on the parts at a high speed is called the impact load, and the metal under the impact load

The ability to resist damage is called impact toughness.

2. Q345B Torque tube strength

Strength refers to the ability of metal materials to resist damage (excessive plastic deformation or fracture) under static load. Since the action modes of load include tension, compression, bending, shearing, etc., the strength is also divided into tensile strength, compressive strength, bending strength, shear strength, etc. There is often some connection between various strengths, and the tensile strength is often used as the basic strength indicator.

3. Q345B square tube seamless and weld

Q345B square tube is extruded from Q345B seamless round tube.

4. Q345B square tube plasticity

Plasticity refers to the ability of metal materials to produce plastic deformation (permanent deformation) without destruction under the action of load.

5. Q345B square tube fatigue

The strength, plasticity and hardness discussed above are all indicators of the mechanical properties of metals under static load. In practice, many machine parts work under cyclic load, under which condition the parts will become tired.

6. Q345B square tube hardness

Hardness is a pointer to measure the hardness of metal materials. At present, the commonly used method for measuring hardness in consumption is the indentation hardness method, which uses the indenter with the corresponding geometric shape to press into the surface of the metal data to be tested under the corresponding load, and determines the hardness value according to the indentation level.

When placing galvanized square pipes, we need to adhere to the cleanliness and hygiene of the environment, and also do a good job in the maintenance of square pipes. When placing square tubes in the warehouse, we need to check whether the warehouse is boring and whether there is any moisture in it. If the warehouse is too wet, it is not suitable for placing tubes. The warehouse should be cleaned. If the warehouse leaks, make up the leaking place before continuing to use. Before entering the warehouse, check whether there is rust on the pipes. Nowadays, galvanized process is commonly used to house pipe rust. As long as rust is found, it should be removed before continuing to use. If the rust is really too serious, such pipes are not suitable for storage and should be used as soon as possible in the short term. If necessary, some antirust oil can be coated to avoid rust. Ductile iron pipes should also be noted. After all, they are easy to rust. Rust not only affects the appearance, but also affects the use of pipes.