AuroraGalvanized conduitThere are such processing steps in processing

To change the required line shape of q355b square tube, it is necessary to forge the impact force of q355b square tube hammer or the pressure of hydraulic press, and can also enhance the malleability of q355b square tube, that is, the performance of changing the shape without cracks.

Before square tube forming the strip steel shall be leveled, trimmed, planed, surface cleaned, improve material rate and improve product quality.

When cutting the sample, the surface of the sample shall not be damaged, the properties of the metal shall not be changed due to heating or cold processing, and the edges at the section shall be rounded.

.The purpose of heat is to prevent the generation of cold cracks. Cold crack is directly related to carbon equivalent. Therefore, it is necessary to distinguish the carbon equivalent of the q355b square tube, and the carbon equivalent of the q355b square tube is the same. If the carbon equivalent of Q345 is less than 0.3%, it can be said that the weldability is OK. Generally speaking, the cold crack increases when the carbon equivalent is 0.4%.

Spiral square pipe for low-pressure transmission (standard of the Ministry of petroleum), with the standard number of syt5037-2008. The representative material is q235bq345b and other carbon steel materials. It is mainly used for low-pressure transmission of water, oil, natural gas heating and other pipelines.

Two main factors should be considered in the design of square pipe section: one is the safety of the section; the other is the economy of the section. For the safety of the section, we require that the ratio of waist thickness to height of H-section steel should not be less than 145. For H-section steel used as column, its economy is expressed by the ratio of torsion radius to its mass.

Ordinary carbon steel is divided into Q19 Q2 q23 SS400, 20# steel,Aurora32 galvanized round pipe, 45# steel, etc.

Hot dip galvanized square pipe is widely used, mainly in curtain wall, solar power generation support, construction, machinery and steel structure engineering, especially in curtain wall, machinery and construction. The effect of cold galvanized square tube is far from that of hot galvanized square tube; How to distinguish hot galvanized square pipe from cold galvanized square pipe?

Honesty is the foundation.First,AuroraGalvanized pipe hot dip galvanized pipe,AuroraWall thickness of galvanized square pipe, remove the deposits on the surface of the square pipe surface with copper wire brush. Use the perfume oil or other scrubbing oil on the surface layer, or use phosphate or chromate solution, brush, spray or dip coating. After the fixed reaction time, rinse the acid solution with plenty of fresh water on the surface.

Upper yield point (& sigma; Su): the large stress before the yield of the sample occurs and the stress decreases for the first time; Lower yield point (& sigma; SL): the small stress in the yield stage when the initial instantaneous effect is not considered.

Steel with chromium content of more than 5% in steel and high corrosion of external medium (acid, alkali salt) is called square pipe. According to the condition in steel, square tubes can be divided into martensite, ferrite, austenite and ferrite & mdash; Austenite type, precipitation hardening square tube, according to the standard gb3280 & mdash; 92 regulations a total of 55 regulations.

The flattening speed of the sample can be 20 ~ 50mmin.

Product line.Compared with other traditional pipes, high strength, good resistance, can withstand high internal pressure, sensitive application, and can get used to messy or bad geological conditions.

Square pipe is the name of square pipe, that is, steel pipe with equal side length. It is made of rolled strip steel after process treatment.

Functional index analysis of square tube - mechanical function of plastic square tube.

Aurora.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.

After chemical treatment and surface treatment of the square tube, making the current square tube present in the market in a good state.

In the process of processing, the processing temperature is the key. Professional square tube, square tube, seamless square tube, 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 ℃.