Why do projects prefer to use high-frequency welded pipes and submerged arc welded pipes
In modern construction engineering, municipal pipe network and energy projects, the requirement for steel pipes is not only "usable", but "efficient, reliable, compressive and durable". Among many steel pipe types, high-frequency welded pipe and submerged arc welded pipe have become the first choice for engineering construction because of their excellent performance, flexible adaptability and high cost performance.
In a word, their advantages are: fast forming, stable welding and strong performance. So how exactly are they welded? What are the technological characteristics? In what fields is it applicable? Let's take you to know more!
High frequency welded pipe: rapid prototyping, accurate welding and efficient choice
Welding principle-heating the edge of steel strip by "high frequency current"
High-frequency welded pipe is to apply high-frequency current to the edge of steel strip, so that it can be quickly heated to a molten state, and then the edges of steel strip heated on both sides are quickly butt welded together with the help of extrusion rollers.
The whole process does not need covered electrode and flux, and it is an induction heating welding technology without melting filler, so the efficiency is extremely high.
Technological advantages-fast, accurate and economical
Fast production speed:
high-frequency welding can realize continuous production, which is several times faster than traditional welding methods;
Smooth weld, accurate size:
automatic control, strong consistency of pipe diameter and wall thickness;
Wide scope of application:
commonly used in water pipes, gas pipes, heating and ventilating pipes, structural support pipes, etc.
This kind of pipe is widely used in urban pipe network, steel structure engineering, photovoltaic support, thermal transportation and other fields, especially suitable for scenes that require high dimensional consistency and batch efficiency.
Submerged arc welding pipe: stable welding, high bearing pressure, preferred for heavy projects
Welding principle-deep penetration welding by submerged arc welding
Submerged arc welding (SAW) technology is mainly used for submerged arc welding pipes, that is, when welding, the arc burns under the flux layer, and the welding is completed by melting the base material and filler material. Because the whole process is covered with flux, the welding is more stable, the weld is dense and the strength is high.
Submerged arc welding can be divided into internal welding and external welding, which can meet the welding requirements of large-diameter and thick-walled steel pipes and is incomparable to traditional welding methods.
Technological advantages-bearing pressure, thick welding and adaptability to heavy load environment
High weld quality:
deep welding and high joint strength, suitable for high-strength use;
Adapt to thick-walled pipes:
large diameter and large wall thickness can also be easily handled;
High degree of automation:
stable welding, reducing human error;
Strong pressure-bearing and anti-corrosion ability:
it is mostly used in oil pipeline, offshore engineering, piling foundation and other projects with high requirements for strength and safety.
Submerged arc welding pipe is commonly used in bridge engineering, port and wharf pile foundation, long-distance oil and gas pipeline, wind power foundation pile and other major projects.
advantages: strong pressure resistance+high customization
Although high-frequency welded pipe and submerged arc welded pipe are different in process path, they have two things in common, which is the key to their wide application in engineering projects
High compressive strength and adaptability to various environments
Whether bearing ground load, underground water pressure or conveying high-pressure fluid, the weld strength and structural stability of these two kinds of steel pipes are excellent. In the construction process, it can effectively cope with various physical shocks and environmental changes, and has a long service life.
Support personalized customization
From pipe diameter, wall thickness to length and end form (such as beveling, welding flange, etc.), both high-frequency welded pipe and submerged arc welded pipe support flexible customization, which is convenient to adapt to different process requirements and installation scenarios and is more efficient in construction.
Choosing the right welded pipe is a "safety lock" for the project
High-frequency welded pipe, winning in efficiency and accuracy; Submerged arc welding pipe is superior to strength and reliability. Both of them have their own strengths and jointly support the "steel skeleton" of infrastructure construction.
Buying steel pipes depends not only on the price, but also on the technology and strength. Choose high-frequency welded pipe and submerged arc welded pipe, and choose a professional enterprise like Huayang who really understands engineering and pipes!
