During the piping process for process pipelines, what is the typical length per section? Is there anything special about this?
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This post was last edited by security on 2011-4-29 at 10:52. I would like to ask everyone: what is the typical length per section for process pipelines during piping? Is there anything special about this?
In my personal understanding, does what the moderator mentioned refer to the weld spacing in the straight sections? In that case, it’s really unclear:shutup: Looking forward to experts helping to clarify this :)
There is generally no requirement regarding the length of the pipes, but those with design experience will take into account the properties of the material when determining the pipe length. For example, when transporting powders, flange connections should be used, and the pipes should not be too long to facilitate disassembly and inspection in case of blockages.
Next, let’s talk about what’s on the upper level. If you want to show the welds on the diagram, ordinary pipes are 10 meters long; some are 12 meters long as well. Many large-diameter pipes are 6 meters long. Another point is that, in accordance with GB50235, circumferential welds are required to be formed over the shortest distance, and this should also be taken into account when drawing piping diagrams.
There is no strict requirement for this; for fixed-length pipes such as those with a steel lining and polyethylene coating, there are certain requirements when installing such pipes, right?
For lined pipes, it is necessary to consult the manufacturer. In the case of high-pressure pipes, it is better to have as few welds as possible, as blockages or crystallization of materials can occur; in such situations, considering the use of slopes is advisable.
It is usually 6 meters per section; this is determined by transportation constraints, as longer lengths cannot be transported by vehicle.
Does the poster mean the lining tube, which is usually made in sections of one meter each?
There are requirements regarding the spacing between welds; in principle, the shorter the pipeline, the better.
The original poster’s question is quite vague; haha, the spacing between two welds can generally be found in ordinary reference books. There is generally no specific length requirement for ordinary carbon steel pipes; the pipes that arrive at the site are usually 10 meters or 12 meters long, depending on the order placed. And if your material is prone to clogging, such as having a high viscosity or being in the form of solid particles, then a removable flange is generally installed every 6 meters. Non-metallic pipes and metal hoses come in different lengths depending on the application, but most of them are connected using flanges.
Six meters is generally used as a reference, but when it comes to piping, straight sections don’t pose much of an issue. The main considerations are the stress on long pipes and the placement of supports. It’s possible to refer to the standards to determine the maximum allowable span for this pipe diameter, thereby selecting appropriate supports. For everything else, process considerations are sufficient