Enthusiastic users to share: special-shaped square tube specifications and implementation standards 0

Shaped square tube is a hollow square section steel tube, also known as steel cold bending section. Special shaped square tube is made of hot-rolled or cold-rolled strip or coil billet, made by cold bending processing, and then made by high-frequency welding of square section shape size steel. Besides the thickening of wall thickness, the angle dimension and edge straightness of hot rolled ultra thick wall tubes reach or even exceed the level of resistance welded cold formed square tubes. If you have this demand, you might as well come along with me to understand the relevant knowledge of special-shaped square tube, introduce it!

Introduction of special-shaped square tube

Shaped square tube is a square tube of a name, that is, the length of the same or unequal steel pipe. According to the national standard, GBT 6728-2002 structure is made of cold formed hollow section steel in size, shape, weight and allowable deviation. The special-shaped square tube is divided into: Q235B, 16Mn and Q345B. In general, the strip is broken down, rolled, rolled and welded to form a square. The required length is 6 meters in length and 12 meters in quantity. It can be machined according to the requirements of customers. Generally small specifications are 50 per package, non standard square pipe in the cash flow in the market is relatively small. It is a square and equilateral steel pipe, machined in shape, weight and allowance. It is made of rolled Q345B strips. Low alloy profiled tube is material of low alloy material and its production and processing (Q345B) and ordinary square in the raw material material (Q195, Q215, Q235) are very different, the low alloy steel (16Mn) after unpacking, smooth, curly, circular tube is formed by welding, pipe rolling made the square tube and then cut into required length of common length of 6 meters, 12 meters or other fixed length.

Characteristics and application of shaped square pipe

1, special-shaped square tube product description

Shaped square tube is a hollow square section of light thin-walled steel pipe, also known as steel cold bending section. Shaped square tube is made of Q235 hot-rolled or cold-rolled strip or coil as the base material, after cold bending processing, and then through high-frequency welding made of square cross-section shape, size of steel. In addition to the thickening of the wall, the corner dimension and the edge straightness of the hot-rolled ultra thick wall tubes are even higher than those of the non welded square tubes formed by resistance welding

2, the use of special-shaped square tube

Use the square shaped building, machinery manufacturing, shipbuilding, steel construction projects, solar power support, steel structure engineering, power engineering, power plant, agricultural and chemical machinery, glass curtain wall, car chassis, airport etc..

Seamless and welded joints of special-shaped square tubes

The special-shaped square tube is formed by extruding the strip steel.

1. plasticity

Plasticity refers to the ability of a metal material to produce plastic deformation (permanent deformation) without damaging it under the action of load.

2. hardness

Hardness is a pointer to the degree of hardness of a metal material. In the current production of hardness testing method is the most commonly used method of indentation hardness, it is with a certain pressure head geometry under load is pressed into the metal surface to be tested, according to the degree to be pressed into the determination of the hardness.

Commonly used methods are Brinell hardness (HB), Rockwell hardness (HRA, HRB, HRC) and Vivtorinox hardness (HV) and other methods.

3. fatigue

The strength, plasticity, and hardness discussed earlier are the mechanical properties of metals under static loads. In fact, many machine parts work under cyclic loading. In this condition, the parts will suffer from fatigue.

4. impact toughness

The load acting on the machine at a great speed is called the impact load, and the ability of the metal to resist damage under impact loading is called impact toughness.

Specification and implementation standard for profiled square tubes

Name specification

Profiled square tube 110*110*5.0-10.0

Profiled square tube 60*90*4.0-8.0

Profiled square tube 125*125*6.0-12.0

Profiled square tube 80*220*5.0-10.0

Profiled square tube 135*135*6.0-12.0

Profiled square tube 80*230*5.0-10.0

Profiled square tube 145*145*6.0-10.0

Profiled square tube 80*240*6.0-10.0

Profiled square tube 172*172*8.0-12.0

Profiled square tube 90*150*8.0-12.0

Profiled square tube 175*175*5.0-10.0

Profiled square tube 100*180*5.0-10.0

Profiled square tube 220*220*8.0-16.0

Profiled square tube 120*200*5.0-12.0

Profiled square tube 230*230*5.0-10.0

Profiled square tube 150*350*6.0-14.0

Profiled square tube 240*240*6.0-12.0

Profiled square tube 260*300*8.0-12.0

Profiled square tube 260*260*8.0-12.0

Profiled square tube 160*220*6.0-12.0

Profiled square tube 280*280*8.0-12.0

Profiled square tube 160*230*8.0-12.0

Profiled square tube 360*360*8.0-12.0

Profiled square tube 450*250*8.0-16.0

1.. Cold formed hollow steel standard for executable GB6728-2002 construction.

2. executable JISG3466-88 Japanese general construction square tube adaptation criteria.

Formula for calculating special-shaped square tubes

Square weight calculation formula: 4* wall thickness * (length side wall thickness) *7.85

The calculation formula of rectangle tube weight: {(perimeter ÷ 3.14) – wall thickness}* wall thickness *0.02466

编辑总结:以上就是热心网友分享:Specification and implementation standard for profiled square tubes的相关介绍,希望能够帮助到有这方面需求的朋友们!如需了解更多相关资讯,请继续关注我们网站,后续将呈现更多精彩内容。您也可以上齐家商城购买更多你心仪的产品哦!

Net friend decoration

Leave a Reply

Your email address will not be published. Required fields are marked *