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[Chemical Knowledge]：The manufacturing method and process of PP pipe.

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The manufacturing method
of PP pipe
1. Introduction

With the continuous development of the field of chemical production raw materials, PP pipe is widely used in chemical, petroleum, food and other fields due to its excellent performance, such as corrosion resistance, high strength, light weight, etc. This article will introduce the manufacturing method of PP pipe in detail.

2. material preparation

1. Polypropylene resin: As the main raw material, polypropylene resin should have the characteristics of high molecular weight, low density, and high fluidity to ensure the strength and processing performance of the pipe.
2. Additives: such as antioxidants, ultraviolet absorbers, lubricants, etc., to improve the weather resistance, processability and service life of the pipe.

3. equipment to prepare

1. Extruder: used to mix and plasticize polypropylene resin and additives to form pipes.
2. shaping mold: used to determine the shape and size of the pipe.
3. Cooling equipment: used to cool the pipe after shaping, so that it has sufficient strength and hardness.

4. Manufacturing Steps

1. Compounding: The polypropylene resin and additives are added to the extruder in a certain ratio.
2. Extrusion: The mixture is heated and plasticized by an extruder to form a pipe in a molten state.
3. shaping: the molten state of the pipe through the shaping mold, forming the required shape and size.
4. Cooling: The shaped pipe is cooled to room temperature by cooling equipment to make it have sufficient strength and hardness.
5. Cutting: Cut the cooled pipe according to the required length.
6. Quality inspection: quality inspection of the cut pipe, including appearance, size, performance, etc.
Precautions for
5.

1. Strictly control the quality of raw materials to ensure stable pipe performance.
2. Regularly check the operation of the equipment to ensure smooth manufacturing process.
3. Follow the relevant safety operation procedures to ensure production safety.

6. summary The manufacturing method of

PP pipe involves material preparation, equipment preparation, manufacturing steps and other links. It is necessary to strictly control the quality of each link to ensure the performance and service life of the final product. The manufacturing method introduced in this paper can provide some reference and guidance for the manufacture of PP pipe in the field of chemical production raw materials.

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