Seamless pipe is a kind of steel pipe without welds, which is manufactured by hot processing methods such as perforation and hot rolling. When necessary, hot-processed tubes can be further cold-processed to the desired shape, size and properties. At present, seamless pipes are widely used in petrochemical production equipment. In the actual application process of seamless steel pipes, opening processing is inevitably required. The openings of seamless steel pipes must not only meet quality requirements, but also meet relevant specifications and standards. This article will introduce the specifications and standards for seamless steel pipe openings for reference by relevant practitioners.
Opening method
There are several ways to open seamless steel pipes, including cutting, drilling, processing, etc. Different opening methods are suitable for different application scenarios and opening requirements. Among them, the cutting method can be oxygen cutting or plasma arc cutting, the processing method can be punching or rolling, and the drilling method can be made by using a drill bit.
Introduction to three commonly used opening methods of seamless steel pipes:
① Select the appropriate tee specifications, place the tee on the pipe, and use fastening bolts to connect the tee to the pipe.
② Use a hacksaw blade or flame cutting machine to cut the opening on the tee.
③ Process the tee at the opening into the required shape and size.
2. Use the cutting machine to open the door
In addition to using tees, you can also use cutting machines to perform opening operations. Specific steps are as follows:
3. Use precision drill opening method
If a precise opening is required, a precision drill can be used to create the opening. Specific steps are as follows:
③ Process the opening into the required shape and size.
Opening size
The opening size of seamless steel pipes should comply with relevant standards and specifications to avoid quality problems. When selecting the appropriate opening size, factors such as pipe diameter, wall thickness, and strength need to be considered. Normally, the opening size should not exceed 1/2 of the pipe diameter and should be adjusted according to specific conditions.
Opening position
The opening position of seamless steel pipes is also an issue that needs attention. Generally speaking, the opening should be in the upper part of the pipe to avoid problems such as leakage during operation. At the same time, the selection of the opening position also needs to consider the safety factors of the pipeline, such as avoiding pipe supports, elbows, etc.
Precautions
When performing seamless steel pipe opening operations, you also need to pay attention to the following matters:
1. Choose the appropriate drilling method. Determine the drilling method according to specific needs to avoid unnecessary waste and losses.
2. Before opening, the pipeline should be cleaned and rust removed to ensure the quality of the opening.
3. After opening, the incision needs to be deburred, sanded, etc. to avoid injuries and other problems during use.
4. Appropriate opening tools must be used to avoid problems such as uneven openings and cracks in the incisions.
5. After opening, the pipeline needs to be inspected and tested, such as normality or pressure test, etc.
6. Pay attention to safety during drilling to prevent accidents.
Conclusion
Through the introduction of this article, I believe that everyone has a deeper understanding and understanding of the seamless steel pipe opening specifications. In actual operation, relevant norms and standards must be followed to ensure the quality of the opening and avoid quality problems and safety hazards.
Opening method
There are several ways to open seamless steel pipes, including cutting, drilling, processing, etc. Different opening methods are suitable for different application scenarios and opening requirements. Among them, the cutting method can be oxygen cutting or plasma arc cutting, the processing method can be punching or rolling, and the drilling method can be made by using a drill bit.
Introduction to three commonly used opening methods of seamless steel pipes:
1. Use the tee opening method
Using a tee is the most common method of opening steel pipes. The principle is to install the tee on the pipe, and then cut the pipe from the opening of the tee to form a hole. Specific steps are as follows:① Select the appropriate tee specifications, place the tee on the pipe, and use fastening bolts to connect the tee to the pipe.
② Use a hacksaw blade or flame cutting machine to cut the opening on the tee.
③ Process the tee at the opening into the required shape and size.
2. Use the cutting machine to open the door
① Select a suitable cutting machine, set the cutting machine, and set cutting speed, cutting depth and other parameters as needed.
② Use a cutting machine to draw the location of the required opening on the pipe, and use a cutting disc to cut the pipe.
③ Pay attention to safety during the cutting process and protect your skin and eyes to avoid injury.
3. Use precision drill opening method
If a precise opening is required, a precision drill can be used to create the opening. Specific steps are as follows:
① Select a suitable precision drill, set the precision drill, and set parameters such as the initial position and required depth and angle.
② Use a precision drill to drill holes in the pipe to perform small-scale opening operations.③ Process the opening into the required shape and size.
Opening size
The opening size of seamless steel pipes should comply with relevant standards and specifications to avoid quality problems. When selecting the appropriate opening size, factors such as pipe diameter, wall thickness, and strength need to be considered. Normally, the opening size should not exceed 1/2 of the pipe diameter and should be adjusted according to specific conditions.
Opening position
The opening position of seamless steel pipes is also an issue that needs attention. Generally speaking, the opening should be in the upper part of the pipe to avoid problems such as leakage during operation. At the same time, the selection of the opening position also needs to consider the safety factors of the pipeline, such as avoiding pipe supports, elbows, etc.
Precautions
When performing seamless steel pipe opening operations, you also need to pay attention to the following matters:
1. Choose the appropriate drilling method. Determine the drilling method according to specific needs to avoid unnecessary waste and losses.
2. Before opening, the pipeline should be cleaned and rust removed to ensure the quality of the opening.
3. After opening, the incision needs to be deburred, sanded, etc. to avoid injuries and other problems during use.
4. Appropriate opening tools must be used to avoid problems such as uneven openings and cracks in the incisions.
5. After opening, the pipeline needs to be inspected and tested, such as normality or pressure test, etc.
6. Pay attention to safety during drilling to prevent accidents.
Conclusion
Through the introduction of this article, I believe that everyone has a deeper understanding and understanding of the seamless steel pipe opening specifications. In actual operation, relevant norms and standards must be followed to ensure the quality of the opening and avoid quality problems and safety hazards.
