Steel Knowledge

Several Section Forms of High rise Steel Structure Members

1、 Axially stressed member The axial force bearing member mainly refers to the member bearing axial tension or axial pressure, which is the simplest one among the members. Read More

Yuantai Derun Steel Pipe Manufacturing Group – Square and Rectangular Pipe Project Case

The square tube of Yuantai Derun is widely used. It has participated in major engineering cases for many times. According to different use scenarios, its uses are as follows: 1. Square and rectangular steel pipes for structures, machinery manufacturing, steel construction and geological drilling,... Read More

How is the R angle of square tube specified in the national standard?

When we purchase and use square tube, the most important point to judge whether the product meets the standard is the value of R angle. How is the R angle of square tube specified in the national standard? I will arrange a table for your reference. Read More

What Is JCOE Pipe?

Straight seam double-sided submerged arc welded pipe is JCOE pipe. Straight seam steel pipe is classified into two types based on the manufacturing process: high frequency straight seam steel pipe and submerged arc welded straight seam steel pipe JCOE pipe. Submerged arc welded straight seam stee... Read More

Square tube industry tips

Square tube is a kind of hollow square section shape steel tube, also known as square tube, rectangular tube. Its specification is expressed in mm of outer diameter * wall thickness. It is made of hot rolled steel strip by cold rolling or cold drawing. Use of seamless square pipe: Seamless square... Read More

What are the main cutting methods for rectangular tubes?

The following five cutting methods of rectangular tubes are introduced: （1） Pipe cutting machine The pipe cutting machine has simple equipment, less investment, and is widely used. Some of them also have the function of chamfering and automatic loading and unloading and aggregate devices. Pipe ... Read More

What is the cause of square tube cracking?

  1. It is mainly the problem of base metal. 2. Seamless steel pipes are not annealed square pipes, which are hard and soft. It is not easy to deform due to extrusion and is impact resistant. High reliability of installation, no embrittlement under gas and sunlight. 3. Weather resistance and... Read More

What factors will affect the feeding accuracy of square tube?

During the production of square and rectangular tubes, the feeding accuracy directly affects the accuracy and quality of the formed products. Today we will introduce seven factors that affect the feeding accuracy of rectangular tube: （1） The center line of the feeding device and the center line... Read More

Dn、De、D、d、 Φ How to distinguish?

Pipe diameter De, DN, d ф Meaning Read More

What are the advantages of general seamless square tube?

Seamless square and rectangular tube has good strength, toughness, plasticity, welding and other technological properties, and good ductility. Its alloy layer is firmly attached to the steel base. Therefore, seamless square and rectangular tube can be formed by cold punching, rolling, wire drawin... Read More

Production process of hot-dip galvanized steel pipe

Hot dip galvanized steel pipe, also known as hot dip galvanized pipe, is a steel pipe that is galvanized for general steel pipe to improve its service performance. Its processing and production principle is to make the molten metal react with the iron substrate to produce an alloy layer, so that ... Read More

What are the methods for heat treatment of straight seam steel pipe?

What are the methods for heat treatment of straight seam steel pipe? First of all, the layout design of technical molds should be reasonable, the thickness should not be too different, and the shape should be symmetrical. For molds with large deformation, the deformation rules should be grasped, ... Read More
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