Washington-DCQ235 square tubeCombine multiple forces to govern together

Performance index analysis of square tube - strength refers to the performance of metal materials under static load. Since the action modes of load include tension, compression, bending and shear, the strength is also divided into tensile strength, compressive strength, flexural strength and shear strength. There is often a certain between various strengths. Generally, tensile strength is used as the basic strength indicator.

Dimensional stability for high-precision square tubes, the required accuracy is high, it has the effect of stabilization and will increase the number of residual square tubes in the, so it must be cooled; Reduce quenching deformation because the square tube is slender, it is easy to deform during quenching, so its deformation must be strictly controlled. Heat treatment is a key process. In the process of quenching and cooling, the cold plasticity shall be corrected in time which is a key step to ensure the improvement of its qualification rate. Therefore, hot bath quenching or cooling in oil for a fixed time shall be carried out to propose thermal correction.

Washington-DC.The difference between hot-dip galvanized square pipe and cold-dip galvanized square pipe is mainly from the following aspects: the appearance of hot-dip galvanized square pipe is slightly rough compared with cold-dip galvanized square pipe; The appearance of cold galvanized square pipe is smooth and bright.

To sum up, improving the quality level of square tube is the key to ensure the service life of die. Therefore, when the economic cost and equipment conditions permit, the quality level of square tube, including surface quality and internal quality, should be improved as much as possible by using more mature process measures.

.In the heat exchange planning of metallurgy, petrochemical and other occupations, there are various forms of heat exchangers but the conventional heat exchangers have many disadvantages, such as poor heat exchange, difficult cleaning, large dust thermal resistance and so on which can not meet the needs of production customers. The square tube heat exchanger based on square tube throat has the advantages of excellent heat exchange, easy cleaning, small dust thermal resistance and compact structure.

Before gas cutting, remove the dirt and grease on the steel surface, and leave a certain space below to facilitate the blowing out of slag. During gas cutting, the movement of the cutting torch shall be kept at a uniform speed. The cutting surface should be 2 ~ 5mm away from the tip of the flame core. If the distance is too close, the edge of the cut will melt, and if it is too far away, the cutting will be interrupted easily due to insufficient heat.

Strictly feed Si Ca wire quantity to ensure effective & Omega in steel; When (CA) is about 0.002% the inclusions can be fully denatured without generating more high melting point inclusions.

The standard number of square pipes for transporting flammable and non flammable fluids is gbt97 1 (gbt97 - 199 represents steel for l245-l4 and other pipelines. It is mainly used for transporting flammable and non flammable fluids, low-pressure or high-pressure square pipes, with high requirements.

The advantage of empty bending is that it can bend the side length when the real bending cannot be carried out, such as synchronous bending and finishing of the upper side and side of q355b square tube. Empty bending can also bend the inner corner of r0.2t without breaking the tube wall.

In the process of processing, the processing temperature is the key. Professional square tube, seamless square tube,Washington-DCNational standard for hot dip galvanized square pipe, galvanized square tube and galvanized tube have advanced technology, strict detection, more affordable price and more preferential price. Consultation is welcome. It must be noted that the blank heating should be uniform. Perforation has a great impact on the quality. The perforation temperature of blank varies according to different materials, generally around 1200 ℃.

retailer.Square tube with complex section: flower shaped square tube,Washington-DC18 galvanized square pipe, open square tube, corrugated square tube and special-shaped square tube.

The advantages of real bending are small reverse, accurate forming, and as long as the roll shape is accurate, the R of inner corner forming is more accurate. The disadvantage of solid bending is that it has tensile thinning effect. The actual bending will produce tension at the bending point, and the tensile effect will shorten the longitudinal length of the bending line; The metal at the real bend will become thinner due to stretching.

General square pipes are stacked outdoors,Washington-DCGalvanized special-shaped square pipe, and most of them are buried underground when in use, so they are easy to corrode and rust. In order to ensure the smooth flow of the pipeline, square pipes must have strong corrosion resistance. Once the pipeline is corroded, it will cause oil and gas leakage, which will not only interrupt transportation, but also pollute the environment, and may even lead to fire and cause harm.

2 before slicing. Highlight: push your hand straight up and down without bending and tremor. Don't know when it's down. Take a constant speed and hand power to stabilize it. Don't slice or cut it completely.

superior quality.The advantages of real bending are small reverse, accurate forming, and as long as the roll shape is accurate, the R of inner corner forming is more accurate.

High pressure oil pipe for diesel engine (gb3093-200) is a cold drawn square pipe for high pressure pipe of diesel engine system.

Square tube with complex section: flower shaped square tube, corrugated square tube and special-shaped square tube.

Washington-DC.Do a good job in the following aspects to effectively improve the use of square tubes

In fact, the casting cleaning is not just shot blasting. For large parts, the drum sand cleaning is carried out first, that is, the riser of the casting is cut off and rolled in the drum, and the square tubes collide with each other in the drum to remove most of the sand on the surface before shot blasting or shot blasting.

Due to the interaction between chromium and carbon in martensitic chromium nickel square tube, but the dissolution limit of carbon decreases with the increase of chromium content. The addition of nickel to martensitic chromium nickel square tube solves the problem that the hardness of steel is sacrificed to improve the corrosion resistance of martensitic square tube. However, the nickel content is not easy to be too high, otherwise the square tube will become austenite square tube due to nickel expanding austenite phase zone and reducing MS temperature, so as to completely lose the quenching ability.