Types of spiral welded pipe coatings:
The coating types of
spiral welded steel pipes (SSAW) mainly include zinc layer, plastic layer, epoxy layer, etc. Among them, the zinc layer is the most common form of coating, which can provide better anti-corrosion properties, while the plastic layer and epoxy layer can provide higher-level anti-corrosion properties.
Thickness of spiral welded pipe coating:
The thickness of the steel pipe coating must comply with relevant regulations to achieve reliable anti-corrosion effects. The thickness of the zinc layer is usually more than 70 μm, while the thickness of the plastic layer and the epoxy layer is more than 150 μm.
Apparent quality requirements for spiral welded pipe coating:
The apparent quality requirements of spiral steel pipes are relatively high. They should be intact, smooth and uniform, without any defects such as rust, oxidation and burrs. At the same time, it should pass quality inspection and comply with relevant standards.
Durability of spiral welded pipe coating:
The durability of steel pipe coating is very important and related to its service life. Generally speaking, the durability of zinc layer is about 10-15 years, while the plastic layer and epoxy layer are more than 20 years. Therefore, when choosing steel
pipe coating, it is necessary to comprehensively consider it based on its use environment and required use time.
Conclusion:
Spiral welded steel pipe coating specifications are a very important part of engineering construction, and construction and inspection must be carried out in strict accordance with relevant regulations. By selecting the appropriate coating type, thickness and quality requirements, the anti-corrosion performance and service life of steel pipes can be greatly improved, engineering maintenance costs can be reduced, resources can be saved, and sustainable development can be achieved.
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