Shanghai Q345 Hot Dip Galvanized Square Tube

Shanghai q345 hot dip galvanized square tube

Many people often ask when looking for steel, which Q345 hot-dip galvanized square pipe in the Shanghai area has good quality? Today, I will explain the characteristics of this material , which Q345 steel plate riveting and welding manufacturer in Shanghai has good quality , its uses, and the key points when purchasing, in order to help you reduce detours.

Basic properties of low alloy high strength steel

Q345 belongs to the category of low-alloy high-strength structural steel, and its yield strength is about 345 MPa. Compared with ordinary carbon steel, this steel has higher strength and better toughness. When it bears pressure and load, it performs more stably and is less prone to sudden deformation or breakage.

It is widely used in building structures, which can effectively improve the load-bearing capacity and bending resistance of the entire structure. It can be said that the effect is really obvious. Especially in areas with rainy and humid conditions like Shanghai, higher requirements are put forward for the mechanical properties of steel. Under such circumstances, the advantages of Q345 are further demonstrated.

Hot-dip galvanized anti-corrosion protective layer

The process of immersing square tubes in high-temperature zinc liquid is a hot-dip galvanizing process. The zinc will react with the surface of the steel to form a dense zinc-iron alloy layer. This isolation layer with a protective film function can effectively isolate air and moisture, thereby preventing further oxidation corrosion of the steel.

Shanghai has a humid climate, and during the rainy season the air humidity often exceeds 80%. Ordinary steel is prone to rust in such an environment. The service life of hot-dip galvanized square pipes is many times longer than that of ordinary steel pipes, which greatly reduces later maintenance costs and replacement frequency.

Various square cross-section specifications

A hot-dip galvanized square tube called Q345 is designed with a square cross-section. Its common wall thickness range is between 2 mm and 10 mm. Its size can be customized according to the needs of the project. Its commonly used specifications include 50×50 mm, 80×80 mm, 100×100 mm, etc.

Various cross-sectional sizes and different wall thicknesses correspond to different load-bearing capacities. Smaller square tubes are suitable for making part of lightweight support structures, while larger ones can be used for main beams or load-bearing columns. During the selection process, it is necessary to match the corresponding specifications based on the actual span load.

Applicable to various engineering scenarios

On construction sites in Shanghai, such square tubes are often used to build scaffolding and steel structure factory building frames. In municipal projects, they are used as the support structure of underground pipe galleries to withstand soil pressure and the weight of pipes.

Heavy-duty shelf frames are made of it and are used in the warehousing and logistics industry. It has a strong carrying capacity. In addition, it is also used in outdoor billboard brackets, balcony guardrails, fences, etc. As long as it is in an outdoor environment, the anti-corrosion advantages of hot-dip galvanizing can be fully utilized.

Pay attention when purchasing and installing

When purchasing, the first thing to do is to check the thickness of the zinc layer. Under national standards, it is usually required to be no less than 60 microns. Next, check the verticality and surface flatness of the square tube. The welded part should be smooth and free of burrs. Regular manufacturers will provide material certificates and test reports.

During installation, the welding area needs to be subjected to secondary anti-corrosion treatment to prevent the zinc layer from being damaged and causing rust. The square pipe should not be in direct contact with the wet ground. If necessary, it should be padded with rubber or wooden boards. Before use, it is best to carry out mechanical property testing to ensure that engineering requirements are met.

Is there a need to purchase Q345 hot-dip galvanized square tubes in your project? You are welcome to share your application experience or problems encountered in the comment area. Please also like it so that more people can see this article.