Pre-galvanized Pipe Thailand

Product Specification：

Pre-galvanized pipe manufacturing process:

1. Material preparation:

Steel strip: The start of manufacturing galvanized round pipes is the selection of high-quality steel strips. Depending on the product requirements and application area, these steel strips can be cold-rolled or hot-rolled steel plates or strips.

2. Curling or shaping:

Curling: The steel strip undergoes a curling process and is bent according to the required diameter and shape to form the initial shape of the pipe.

Forming: Rolling steel strips into circular or other specific shapes of pipes by using plate rolling machines, bending machines, or other forming equipment.

3. Welding:

Welding process: The curled or formed steel strip is connected to a complete round tube. Common welding methods include high-frequency welding, resistance welding, etc.    

4. Galvanizing treatment:

The welded steel pipe is fed into the hot-dip galvanizing equipment. It is first pickled to remove oil stains and oxides on the surface, and then the pipe is immersed in molten zinc to form a zinc coating. This layer of zinc can effectively protect the surface of the steel pipe from corrosion.

5. Cooling and shaping:

Cooling: The galvanized pipe will go through a cooling process to ensure that the zinc layer is firmly attached to the surface of the steel pipe.

Shaping: Cut the galvanized round pipe into the required length and specifications through cutting, shaping, and other processes.

6. Inspection and packaging:

Quality inspection: Conduct quality inspection on the manufactured galvanized round pipes to ensure that the products comply with relevant standards and requirements.

Packaging: Pack qualified products to facilitate transportation and storage while protecting pipes from damage.

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