Year1
- Q345D：
- 450*250*12
- Q345E：
- 400*300*10
- Q345D：
- 300*250*8
However, compared with straight-seam square pipes of the same length, the weld length is increased ~ and the production speed is lower.
Welded square pipes with large diameter or thicker diameter are generally made directly from steel billets, while small welded pipes and thin-walled welded pipes only need to be directly
welded through steel strips. Then simply polish and brush it. Therefore, smaller diameter welded pipes mostly use straight seam welding, and large diameter welded pipes mostly use spiral welding. Welded square pipe is a name for square pipe, which is a steel pipe with the same side length.
It is made of strip steel rolled through process. Normally, the strip is unpacked, flattened, curled, and welded to form a round tube, and then rolled from the round tube
The welded square tube is inspected and then cut to the required length. Normally one root per package. Strength refers to the ability of welded square pipe materials to resist damage (moderate plastic deformation or breakage) under static load. Because the load acts in the form of tension, compression, bending, shearing, etc.
Because strength is also divided into tensile strength, compressive strength, flexural strength, shear strength, etc. There is often a certain relationship between various strengths. In application, tensile strength is usually used as the most basic strength indicator. Strength is the power to withstand destruction, so-called resilience.
The load that acts on the machine parts at a great speed is called the impact load, and the metal is under the action of the impact load
The strength, plasticity, and angle discussed behind the impact toughness of the square tube are all the welded square tubes that are statically Machine function indicator needle under load.
In fact, many mechanical parts are repeatedly loaded with tasks. In this case, the parts will become tired. The fatigue angle is a gauge hand that measures the softness and hardness of metal materials. The most commonly used internal angle method in recent years is the indentation angle method, which uses a certain geometric shape of the indenter to press into the surface of the welded square tube material being tested under a certain load. According to the degree of intrusion to default its angle value.
Commonly used methods include Brinell angle, Rockwell angle (,,) and Vickers angle. Angle plasticity refers to the ability of metal materials to undergo plastic deformation (permanent deformation) without destruction under load. Plastic welded square tube non-standard seamless square
Rectangular tube is made by extruding seamless round tube. The difference between seamless and welded square tubes is as the name implies. It is a square tube type (square rectangular tube). Many kinds of materials can form a square tube (square rectangular tube) body. It mediates between, why Used, where are they used, most of them are welded
The majority of square tubes are steel tubes, mostly structural square tubes, decorative square tubes, architectural square tubes (square and rectangular tubes) and other square tubes. Introduction to square tubes Introduction to the functions of square tubes
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Shanghai Xinan Industrial Co., Ltd./has a large number of low-temperature resistant profiles in stock for a long time In stock, payment within seconds!!
/ Square and rectangular tube welding specifications are as follows
Material specifications/thickness/length raw material steel factory unit price including tax
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National Standard/Non-standard All specifications can be welded, the minimum order quantity is tons, and the delivery time is about days!!
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