Steel elbow: The most commonly used is seamless steel elbow, which is divided into long-radius steel elbow and short-radius steel elbow. Among them, the long-radius steel elbow is the most commonly used, and its application is also very extensive.
Steel elbows are distinguished according to specifications: small and medium-sized are seamless steel elbows. At present, the diameter of domestic seamless steel elbows is 40″, that is, Φ1020, that is, within the range of DN15-DN1000, and large specifications are generally steel plate pairs. The welding of steel elbows, the process can also be divided into long-radius steel elbows and short-radius steel elbows, the specifications involved are: around DN500-DN2500.
The use of steel bending pipes is more special than steel elbows, but these two types of pipes generally do not conflict.
The distinction of steel bending pipe:
Distinguished according to R: r is the radius, usually starting in 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 the angle, the angle is also unlimited, and there is also a difference between seamless and seamed, generally a small size that is seamless, and a large size that uses seams, such as spiral welding and so on.
According to the production process: intermediate frequency hot bending process, seamless push process, numerical control processing process.
The difference between elbow and steel bending pipe:
The above content introduced the elbow and steel bending pipe, so let’s get down to business, is there any difference between them? The answer is different. So what is the main difference between the two?
1. First of all, let’s talk about the process: the process of seamless steel elbow is hot pushing, cold pressing, and hot pressing, and the process of steel bending pipe is intermediate frequency bending, hot pressing, and numerical control bending. Among them, carbon steel is the most commonly used steel elbow in pressure pipes, alloy steel is hot pushed, stainless steel is cold pushed, and the most commonly used process for steel bending pipe is intermediate frequency bending.
2. The difference in scouring strength: the R of the steel elbow and the steel bending pipe itself are different. R is a position that controls the length of the steel elbow and the steel bending pipe. The scouring strength of the small R that passes through the medium is higher than that of the large R. Much larger, that is to say, the scouring strength of the 1D steel elbow is not as good as that of the 1.5D steel elbow. The scouring strength of 1.5D elbow is lower than that of steel bending pipe, and steel bending pipe is more resistant to erosion and wear than steel elbow.
3. There is also a special case, such as the bridge class. It is necessary to use a large-span steel bending pipe to cross it. At this time, steel elbows cannot be used, and steel bending pipes are also used for general hot pipes.
Steel bending pipe has different uses in different industries, it can freely extend to farther places with the advantage of bending, and the strength of the building will also be reduced. Steel bending pipe is widely used in the fields of electric power, petroleum, navigation, chemical industry, etc. It is mainly used for oil transportation, natural gas transportation, and liquid infusion, and plays an important role in aircraft and its engines.
Post time: May-31-2023