How to install fiberglass pipes?

　　Many fiberglass pipes are used in underground pipelines. Of course, the span of the underground pipeline needs to be calculated considering the span issue.

　　Underground pipelines are supported by pipe racks, hangers, and brackets. The distance between two support points is the so-called pipe span. Of course, the span cannot be too large, which will affectFiberglass Pipenormal operation. Of course, to solve this span problem, it is determined by the strength and stiffness of the pipe.

　　(1) Determine the pipe span according to the strength condition.

　　The maximum stress generated at the pipe interface under external load should not exceed the allowable stress of the fiberglass pipe.

　　(2) Determine the pipe span according to the stiffness condition.

　　How to install fiberglass pipes?

　　Fiberglass Pipe Installation Principles

　　The installation order of fiberglass pipes is: zoning, demarcation lines, large diameter before small diameter, lower layer before upper layer, pipe corridor before connecting equipment. Pipes connected to the machine are basically matched from the inside to the outside to reduce the impact of welding stress on the installation accuracy of the machine. The indoor and outdoor pipe inlets must be on the outside.

　　I. Fiberglass Pipe Installation Requirements

　　1. Before installation, the pipeline should be reviewed withFiberglass Pipeinstallation-related content, including equipment nozzles, embedded parts, reserved holes, steel structures, etc.

　　2. The slope of the pipeline should be adjusted according to the drawing requirements. The adjustment method can use supports to meet the slope requirements. Welding should be installed in a place that is easy to maintain and observe.

　　3. Pipes connected to transmission equipment should be cleaned internally before installation. The welded fixed nozzles should generally be away from the equipment to avoid the welding stress affecting the installation accuracy of the transmission equipment.

　　4. Before connecting the pipeline to the machine, it is necessary to prevent relative strength and check the parallelism and coaxiality of the flange in a free state.

　　5. The safety valve should be installed vertically, and the safety valve should be adjusted in time when put into trial operation. The final adjustment of the safety valve will be carried out in the system, and the opening and return pressure must comply with the provisions of the design documents.

　　6. Before installing the valve, confirm the model according to the design documents, and determine the installation direction according to the medium flow. If the valve and pipe are connected by flange or thread, the valve must be closed for installation. If welded installation is used, the valve cannot be closed.

　　7. Temporary replacement of instrument components: All instrument components are temporarily replaced during installation, and are formally installed before commissioning after pressure testing, flushing, and cleaning work.

　　II.Fiberglass PipeApplication scope:

　　1. Chemical medium conveyor

　　2. Various process plants (chemical process, papermaking process, wastewater treatment process, seawater desalination process, food and beverage processing process, pharmaceutical process, etc.)

　　3. Small hydropower stations above ground pressure pipelines, power plant circulation pipelines

　　4. Sewage collection and pipelines

　　5. Drinking water pipelines and drainage pipes

　　6. Oilfield water injection pipelines and crude oil pipelines

　　7. Heat pipes, seawater pipes

　　8. Agricultural irrigation pipelines

　　9. Vacuum pipes, external pressure pipes and siphon pipes