What Is The Difference Between Steel Bends And Elbow

Steel Bend And Elbow Supplier-GNEE

Steel Elbow
The most commonly used is seamless elbow, which is divided into long radius elbow and short radius elbow. Among them, long radius elbow is the most commonly used elbow and its application is also very wide.

 

Elbows are classified according to specifications:
Small and medium-sized ones are seamless elbows. At present, the maximum diameter of domestic seamless elbows is 40", which is Φ1020, that is, within the range of DN15-DN1000. Large sizes are generally steel plate butt welded elbows. This process can also be divided into The specifications involved for long radius elbows and short radius elbows are: around DN500-DN2500.
The use of steel elbows is more special than elbows, but the two types of pipes generally do not conflict.
Differences between steel elbows:
Distinguish according to R: r is the radius, usually starting from 3D, until the size required by the working conditions, that is, R is infinite as long as it exceeds 3D. According to the distinction of angle, the angle is not limited, and there is also a difference between seamless and seamed. Generally, it is seamless small size, large size using seams, such as spiral welding, etc.
According to production technology: medium frequency hot bending technology, seamless pushing technology, CNC machining technology.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

1. Process:
The processes of seamless elbows are hot pushing, cold pressing and hot pressing, and the processes of elbows are medium frequency bending, hot pressing and CNC bending. Among them, carbon steel is the most commonly used elbow in pressure pipes, alloy steel is hot pushed, stainless steel is cold pushed, and the most commonly used process for elbows is medium frequency bending.
2. Scouring intensity:
The R of the elbow and the elbow itself is different. R is a position that controls the length of the elbow and the elbow. The erosion intensity of the small R passing through the medium is definitely much greater than that of the large R. In other words, the erosion of the 1D elbow Not as strong as 1.5D elbow. The erosion strength of 1.5D elbow is lower than that of elbow, and elbow is more resistant to erosion and wear than elbow.
3. There is also a special case, such as bridge type. A long-span elbow is required to cross over. At this time, elbows cannot be used. Elbows are also used for general hot pipes.
Bend pipes have different uses in different industries, it can be freely extended to farther places with the advantage of bending, and the strength of the building will also be reduced. Bend pipes are widely used in electric power, petroleum, navigation, chemical industry and other fields. They are mainly used for oil transportation, natural gas transportation and infusion, and play an important role in aircraft and their engines.