ASTM A53/ API 5L ERW Pre-Galvanized Steel Pipe
A pre-galvanized pipe, also known as inline galvanized pipe or continuous galvanized pipe, is a type of pipe that is made of pre-galvanized coils and strips.
This material has been pre-coated with a layer of zinc before rolling into a pipe. This coat helps to protect the pipe from corrosion and also provides a barrier against weld seam corrosion. The thickness of zinc layer of pre galvanized pipe is 40-100 g/㎡.
Application for Pre-Galvanized Steel Tube
Pre-Galvanized Steel Pipe Used for Greenhouse Frame
Pre-Galvanized Steel Pipe Used in Highway Guardrail
Production Process
The coating is applied before the pipe is welded, and the entire process is typically done in a factory setting.
First, the galvanized steel strip is cleaned and then a coat of zinc is applied. The strip is then passed through a series of rollers to form it into a pipe shape.
Next, the weld seam is created, and finally, the pipe undergoes a final spray coating of zinc. This coat helps to protect the weld seam from corrosion.
Example Size
NPS | Outside Diameter | Wall Thickness |
mm | mm | |
1/2″ | 21.3 | 0.8 – 2.5 |
1″ | 33.4 | 0.8 – 2.5 |
1 1/4″ | 42.2 | 1.0 – 2.5 |
1 1/2″ | 48.3 | 1.0 – 2.5 |
2″ | 60.3 | 1.0 – 2.5 |
2 1/2″ | 73.0 | 1.0 – 2.5 |
3″ | 88.9 | 1.0 – 2.5 |
4″ | 114.3 | 1.0 – 2.5 |
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Processing Services:
- OEM & ODM
- Protective Coatings
- Saw and Flame Cutting
- Beveling, Threading and Grooving
