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Quick identification method for quality of pipe fittings
Release time:
2022-08-12
There must be many people who are confused and don't know how to distinguish the quality of malleable steel pipe fittings. Today, the editor will teach you how to quickly distinguish the quality of malleable steel pipe fittings.
There must be many people who are confused and don't know how to distinguish the quality of malleable steel pipe fittings. Today, the editor will teach you how to quickly distinguish the quality of malleable steel pipe fittings.
"One Knock, Two Look, Three Weighs" Method
The so-called one-knock: Malleable steel pipe fittings are tough casting products. If they are knocked with external force, if the surface is dented or a small amount of deformation does not crack, it means that its performance is acceptable.
Second look: Looking at the length of the thread, the thread length of general fake and inferior products always appears to be particularly short. Second, look at galvanizing. The galvanizing specified in GB/T3287-2000 refers to hot-dip galvanizing with better corrosion resistance. Zinc layer. The counterfeit and inferior products are treated with electro-galvanizing or other coatings after processing the thread. The surface of the thread has a zinc layer (coating), which is much lower in cost and has poor corrosion resistance. After installation in the pipeline, yellow water (rust water) appears.
Sanjue: The malleable steel pipe fittings that cut corners will definitely reduce the outer diameter, the thickness, and the medium and long dimensions. It is generally more than 10% lighter than the pipe fittings that meet the national standard. We can judge fake and inferior by weighing the weight with our hands.
The above is a simple identification method for the quality of malleable steel pipe fittings organized for you. Did you learn?
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